Type |
Details |
Score |
Publication |
First Author: |
Schwartz CJ |
Year: |
2001 |
Journal: |
Proc Natl Acad Sci U S A |
Title: |
IscR, an Fe-S cluster-containing transcription factor, represses expression of Escherichia coli genes encoding Fe-S cluster assembly proteins. |
Volume: |
98 |
Issue: |
26 |
Pages: |
14895-900 |
|
•
•
•
•
•
|
Publication |
First Author: |
Maiwald D |
Year: |
2003 |
Journal: |
Plant Physiol |
Title: |
Knock-out of the genes coding for the Rieske protein and the ATP-synthase delta-subunit of Arabidopsis. Effects on photosynthesis, thylakoid protein composition, and nuclear chloroplast gene expression. |
Volume: |
133 |
Issue: |
1 |
Pages: |
191-202 |
|
•
•
•
•
•
|
Protein Domain |
Type: |
Family |
Description: |
The plant cytochrome b6f is located in the thylakoid membrane and functions in both linear and cyclic electron transport, providing ATP and NADPH for photosynthetic carbon fixation. The cytochrome b6f complex has eight different subunits, six being encoded in the chloroplast genome (PetA [cyt f], PetB [cyt b6], PetD, PetG, PetL, and PetN) and two in the nucleus (PetC [Rieske FeS]and PetM. The complex functions as a dimer []. In cyanobacteria, the cytochrome b6f complex contains four large subunits, including cytochrome f, cytochrome b6, the Rieske iron-sulfur protein (ISP), and subunit IV; as well as four small hydrophobic subunits, PetG, PetL, PetM, and PetN []. This entry represents the Rieske FeS protein (encoded by the PetC gene) of the cytochrome b6f complex from plants and cyanobacteria. The Rieske subunit acts by binding plastoquinol anion, transferring an electron to the 2Fe-2S cluster, then releasing the electron to thecytochrome f haem iron. The 2Fe-2S cluster is bound in the highly conserved C-terminal region of the Rieske subunit. In plants, Rieske FeS is required for the successful assembly of the b6f complex and is essential for photosynthesis [, ]. |
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•
•
•
•
•
|
Publication |
First Author: |
Westenberg DJ |
Year: |
1999 |
Journal: |
FEMS Microbiol Lett |
Title: |
The F420H2-dehydrogenase from Methanolobus tindarius: cloning of the ffd operon and expression of the genes in Escherichia coli. |
Volume: |
170 |
Issue: |
2 |
Pages: |
389-98 |
|
•
•
•
•
•
|
Protein Domain |
Type: |
Domain |
Description: |
This domain (previously known as DUF59) is found in proteins that are mostly defined as members of the MIP18 family. This includes iron-sulfur cluster carrier proteins, where the domain is found in the N terminus. This domain is also found in protein AE7 from Arabidopsis and its homologues. Protein AE7 is thought to be a central member of the cytosolic iron-sulfur (Fe-S) protein assembly (CIA) pathway, however protein AE7-like 1 and 2 (also containing this domain) are probably not involved in this pathway []. MIP18 family protein YHR122W (CIA2) from S. cerevisiae is a component of the CIA machinery, and acts at a late step of Fe-S cluster assembly []. The SufT protein from Staphylococcus aureus is composed of this domain solely and is involved in the maturation of FeS proteins []. |
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•
•
•
•
•
|
Protein Domain |
Type: |
Family |
Description: |
This entry represents the FpoO subunit of membrane-bound multi-subunit F420H2 dehydrogenase, which oxidises the reduced coenzyme F420H2 to coenzyme F420 and feeds the electrons via an FeS cluster into an energy-conserving electron transport chain [, ]. This enzyme plays a role in the methanogenic pathway in methanogenic archaea. Reduced coenzyme F420H2 is the major cytoplasmic electron carrier of methanogens and a reversible hydride donor, much like NADH []. F420H2 + COB-S-S-CoM = F420 + CoM-SH + CoB-SHWhere CoB-S-S-CoM (the heterosulphide of 2-mercaptoethanesulphonate and 7-mercaptoheptanoylthreonine phosphate) is the terminal electron acceptor of the methanogenic pathway, and is reduced with the concomitant generation of a transmembrane proton potential and ATP synthesis. The FpoO subunit of F420H2 dehydrogenase probably participates in the reduction of methanophenazine, where it acts as a special mechanism for the reduction of the methanogenic cofactor []. |
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•
•
•
•
•
|
Publication |
First Author: |
Dai S |
Year: |
2000 |
Journal: |
Science |
Title: |
Redox signaling in chloroplasts: cleavage of disulfides by an iron-sulfur cluster. |
Volume: |
287 |
Issue: |
5453 |
Pages: |
655-8 |
|
•
•
•
•
•
|
Publication |
First Author: |
Chow LP |
Year: |
1995 |
Journal: |
Eur J Biochem |
Title: |
Amino acid sequence of spinach ferredoxin:thioredoxin reductase catalytic subunit and identification of thiol groups constituting a redox-active disulfide and a [4Fe-4S] cluster. |
Volume: |
231 |
Issue: |
1 |
Pages: |
149-56 |
|
•
•
•
•
•
|
Publication |
First Author: |
Layer G |
Year: |
2006 |
Journal: |
J Biol Chem |
Title: |
Iron-sulfur cluster biosynthesis: characterization of Escherichia coli CYaY as an iron donor for the assembly of [2Fe-2S] clusters in the scaffold IscU. |
Volume: |
281 |
Issue: |
24 |
Pages: |
16256-63 |
|
•
•
•
•
•
|
Publication |
First Author: |
Vivas E |
Year: |
2006 |
Journal: |
J Bacteriol |
Title: |
Salmonella enterica strains lacking the frataxin homolog CyaY show defects in Fe-S cluster metabolism in vivo. |
Volume: |
188 |
Issue: |
3 |
Pages: |
1175-9 |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
145
 |
Fragment?: |
false |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
151
 |
Fragment?: |
false |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
150
 |
Fragment?: |
false |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
58
 |
Fragment?: |
false |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
46
 |
Fragment?: |
false |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
84
 |
Fragment?: |
true |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
150
 |
Fragment?: |
false |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
50
 |
Fragment?: |
false |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
151
 |
Fragment?: |
true |
|
•
•
•
•
•
|
Publication |
First Author: |
Andersson CS |
Year: |
2012 |
Journal: |
Chem Biodivers |
Title: |
A dynamic C-terminal segment in the Mycobacterium tuberculosis Mn/Fe R2lox protein can adopt a helical structure with possible functional consequences. |
Volume: |
9 |
Issue: |
9 |
Pages: |
1981-8 |
|
•
•
•
•
•
|
Publication |
First Author: |
Luo D |
Year: |
2012 |
Journal: |
Plant Cell |
Title: |
The DUF59 family gene AE7 acts in the cytosolic iron-sulfur cluster assembly pathway to maintain nuclear genome integrity in Arabidopsis. |
Volume: |
24 |
Issue: |
10 |
Pages: |
4135-48 |
|
•
•
•
•
•
|
Publication |
First Author: |
Andersson J |
Year: |
2001 |
Journal: |
J Biol Chem |
Title: |
Two active site asparagines are essential for the reaction mechanism of the class III anaerobic ribonucleotide reductase from bacteriophage T4. |
Volume: |
276 |
Issue: |
44 |
Pages: |
40457-63 |
|
•
•
•
•
•
|
Publication |
First Author: |
Logan DT |
Year: |
1999 |
Journal: |
Science |
Title: |
A glycyl radical site in the crystal structure of a class III ribonucleotide reductase. |
Volume: |
283 |
Issue: |
5407 |
Pages: |
1499-504 |
|
•
•
•
•
•
|
Publication |
First Author: |
Logan DT |
Year: |
2003 |
Journal: |
Proc Natl Acad Sci U S A |
Title: |
A metal-binding site in the catalytic subunit of anaerobic ribonucleotide reductase. |
Volume: |
100 |
Issue: |
7 |
Pages: |
3826-31 |
|
•
•
•
•
•
|
Publication |
First Author: |
Carroll J |
Year: |
2002 |
Journal: |
J Biol Chem |
Title: |
Definition of the nuclear encoded protein composition of bovine heart mitochondrial complex I. Identification of two new subunits. |
Volume: |
277 |
Issue: |
52 |
Pages: |
50311-7 |
|
•
•
•
•
•
|
Publication |
First Author: |
Remacle C |
Year: |
2008 |
Journal: |
Mol Genet Genomics |
Title: |
Eukaryotic complex I: functional diversity and experimental systems to unravel the assembly process. |
Volume: |
280 |
Issue: |
2 |
Pages: |
93-110 |
|
•
•
•
•
•
|
Publication |
First Author: |
Vogel RO |
Year: |
2007 |
Journal: |
Biochim Biophys Acta |
Title: |
Human mitochondrial complex I assembly: a dynamic and versatile process. |
Volume: |
1767 |
Issue: |
10 |
Pages: |
1215-27 |
|
•
•
•
•
•
|
Protein Domain |
Type: |
Family |
Description: |
The eukaryotic proteins in this entry include frataxin, the protein that is mutated in Friedreich's ataxia [], and related sequences. Friedreich's ataxia is a progressive neurodegenerative disorder caused by loss of function mutations in the gene encoding frataxin (FRDA). Frataxin mRNA is predominantly expressed in tissues with a high metabolic rate (including liver, kidney, brown fat and heart). Mouse and yeast frataxin homologues contain a potential N-terminal mitochondrial targeting sequence, and human frataxin has been observed to co-localise with a mitochondrial protein. Furthermore, disruption of the yeast gene has been shown to result in mitochondrial dysfunction. Friedreich's ataxia is thus believed to be a mitochondrial disease caused by a mutation in the nuclear genome (specifically, expansion of an intronic GAA triplet repeat) [, , ].The bacterial proteins in this entry are iron-sulphur cluster (FeS) metabolism CyaY proteins homologous to eukaryotic frataxin. Partial Phylogenetic Profiling []suggests that CyaY most likely functions as part of the ISC system for FeS cluster biosynthesis, and is supported by expermimental data in some species [, ]. |
|
•
•
•
•
•
|
Protein Domain |
Type: |
Family |
Description: |
Ribonucleotide reductase (RNR), also known as ribonucleoside diphosphate reductase, () [, ]catalyses the reductive synthesisof deoxyribonucleotides from their corresponding ribonucleotides:2'-deoxyribonucleoside diphosphate + oxidized thioredoxin + H2O = ribonucleoside diphosphate + reduced thioredoxinRNR provides the precursors necessary for DNA synthesis. RNRs divide into three classes on the basis of their metallocofactor usage. Class I RNRs, found in eukaryotes, bacteria, bacteriophage and viruses, use adiiron-tyrosyl radical, Class II RNRs, found in bacteria,bacteriophage, algae and archaea, use coenzyme B12(adenosylcobalamin, AdoCbl). Class III RNRs, found inanaerobic bacteria and bacteriophage, use an FeS cluster andS-adenosylmethionine to generate a glycyl radical. Manyorganisms have more than one class of RNR present in theirgenomes. Class I ribonucleotide reductase is an oligomeric enzyme composed of a large subunit (700 to 1000 residues) and a small subunit (300 to 400 residues) - class II RNRs are less complex, using the small molecule B12 in place of the small chain []. The small chain binds two iron atoms [](three Glu, one Asp, and two His areinvolved in metal binding) and contains an active site tyrosine radical. Theregions of the sequence that contain the metal-binding residues and the activesite tyrosine are conserved in ribonucleotide reductase small chain fromprokaryotes, eukaryotes and viruses.This family consist of the small subunit of class I ribonucleotide reductases. It also includes R2-like ligand-binding oxidase, which is homologous to the ribonucleotide reductase small subunit (R2), but whose function is still unknown [, ]. |
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•
•
•
•
•
|
Protein Domain |
Type: |
Homologous_superfamily |
Description: |
The eukaryotic proteins in this entry include frataxin, the protein that is mutated in Friedreich's ataxia [], and related sequences. Friedreich's ataxia is a progressive neurodegenerative disorder caused by loss of function mutations in the gene encoding frataxin (FRDA). Frataxin mRNA is predominantly expressed in tissues with a high metabolic rate (including liver, kidney, brown fat and heart). Mouse and yeast frataxin homologues contain a potential N-terminal mitochondrial targeting sequence, and human frataxin has been observed to co-localise with a mitochondrial protein. Furthermore, disruption of the yeast gene has been shown to result in mitochondrial dysfunction. Friedreich's ataxia is thus believed to be a mitochondrial disease caused by a mutation in the nuclear genome (specifically, expansion of an intronic GAA triplet repeat) [, , ].The bacterial proteins in this entry are iron-sulphur cluster (FeS) metabolism CyaY proteins homologous to eukaryotic frataxin. Partial Phylogenetic Profiling []suggests that CyaY most likely functions as part of the ISC system for FeS cluster biosynthesis, and is supported by expermimental data in some species [, ]. The structure of Frataxin/CyaY has an α-β(5)-alpha fold arranged in two layers (alpha/beta) with meander antiparallel sheet. |
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•
•
•
•
•
|
Protein Domain |
Type: |
Family |
Description: |
This entry represents anaerobic, class III ribonucleotide reductase. The mechanism of the enzyme involves a glycine-centred radical[], a C-terminal zinc binding site [], and a set of conserved active site cysteines and asparagines []. This enzyme requires an activating component, NrdG, a radical-SAM domain containing enzyme (). Together the two form an alpha-2/beta-2 heterodimer.Ribonucleotide reductase (RNR) catalyzes the reductive synthesis of deoxyribonucleotides from their corresponding ribonucleotides. It provides the precursors necessary for DNA synthesis. RNRs are separated into three classes based on their metallocofactor usage. Class I RNRs, found in eukaryotes, bacteria, and bacteriophage, use a diiron-tyrosyl radical. Class II RNRs, found in bacteria, bacteriophage, algae and archaea, use coenzyme B12 (adenosylcobalamin, AdoCbl). Class III RNRs, found in strict or facultative anaerobic bacteria, bacteriophage, and archaea, use an FeS cluster and S-adenosylmethionine to generate a glycyl radical []. Many organisms have more than one class of RNR present in their genomes. All three RNRs have a ten-stranded α-β barrel domain that is structurally similar to the domain of PFL (pyruvate formate lyase) []. The class III enzyme from phage T4 consists of two subunits, this model covers the larger subunit which contains the active and allosteric sites. |
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•
•
•
•
•
|
Protein Domain |
Type: |
Family |
Description: |
NADH:ubiquinone oxidoreductase (complex I) () is a respiratory-chain enzyme that catalyses the transfer of two electrons from NADH to ubiquinone in a reaction that is associated with proton translocation across the membrane (NADH + ubiquinone = NAD+ + ubiquinol) []. Complex I is a major source of reactive oxygen species (ROS) that are predominantly formed by electron transfer from FMNH(2). Complex I is found in bacteria, cyanobacteria (as a NADH-plastoquinone oxidoreductase), archaea [], mitochondria, and in the hydrogenosome, a mitochondria-derived organelle. In general, the bacterial complex consists of 14 different subunits, while the mitochondrial complex contains homologues to these subunits in addition to approximately 31 additional proteins [].Mitochondrial complex I, which is located inthe inner mitochondrial membrane, is the largest multimeric respiratory enzyme in the mitochondria, consisting of more than 45 subunits, one FMN co-factor and eight FeS clusters []. The assembly of mitochondrial complex I is an intricate process that requires the cooperation of the nuclear and mitochondrial genomes [, ].This entry represents the ESSS subunit from mitochondrial NADH:ubiquinone oxidoreductase (complex I). It carries mitochondrial import sequences []. |
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•
•
•
•
•
|
Protein Domain |
Type: |
Conserved_site |
Description: |
The eukaryotic proteins in this entry include frataxin, the protein that is mutated in Friedreich's ataxia [], and related sequences. Friedreich's ataxia is a progressive neurodegenerative disorder caused by loss of function mutations in the gene encoding frataxin (FRDA). Frataxin mRNA is predominantly expressed in tissues with a high metabolic rate (including liver, kidney, brown fat and heart). Mouse and yeast frataxin homologues contain a potential N-terminal mitochondrial targeting sequence, and human frataxin has been observed to co-localise with a mitochondrial protein. Furthermore, disruption of the yeast gene has been shown to result in mitochondrial dysfunction. Friedreich's ataxia is thus believed to be a mitochondrial disease caused by a mutation in the nuclear genome (specifically, expansion of an intronic GAA triplet repeat) [, , ].The bacterial proteins in this entry are iron-sulphur cluster (FeS) metabolism CyaY proteins homologous to eukaryotic frataxin. Partial Phylogenetic Profiling []suggests that CyaY most likely functions as part of the ISC system for FeS cluster biosynthesis, and is supported by expermimental data in some species [, ]. This conserved site covers a conserved region in the central section of these proteins. |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
65
 |
Fragment?: |
true |
|
•
•
•
•
•
|
Publication |
First Author: |
Simkin AJ |
Year: |
2017 |
Journal: |
Plant Physiol |
Title: |
Overexpression of the RieskeFeS Protein Increases Electron Transport Rates and Biomass Yield. |
Volume: |
175 |
Issue: |
1 |
Pages: |
134-145 |
|
•
•
•
•
•
|
Publication |
First Author: |
Andersson CS |
Year: |
2009 |
Journal: |
Proc Natl Acad Sci U S A |
Title: |
A Mycobacterium tuberculosis ligand-binding Mn/Fe protein reveals a new cofactor in a remodeled R2-protein scaffold. |
Volume: |
106 |
Issue: |
14 |
Pages: |
5633-8 |
|
•
•
•
•
•
|
Publication |
First Author: |
Kazmierczak BI |
Year: |
2013 |
Journal: |
Mol Microbiol |
Title: |
Spatial and numerical regulation of flagellar biosynthesis in polarly flagellated bacteria. |
Volume: |
88 |
Issue: |
4 |
Pages: |
655-63 |
|
•
•
•
•
•
|
Protein Domain |
Type: |
Family |
Description: |
Ribonucleotide reductase (RNR, ) [, ]catalyzes the reductivesynthesis of deoxyribonucleotides from their corresponding ribonucleotides. It provides the precursors necessary for DNA synthesis. RNRs divide into three classes on the basis of their metallocofactor usage. Class I RNRs, found in eukaryotes, bacteria, bacteriophage and viruses, use a diiron-tyrosyl radical, Class II RNRs, found in bacteria, bacteriophage, algae and archaea, use coenzyme B12 (adenosylcobalamin, AdoCbl). Class III RNRs, found in anaerobic bacteria and bacteriophage, use an FeS cluster and S-adenosylmethionine to generate a glycyl radical. Many organisms have more than one class of RNR present in their genomes. Ribonucleotide reductase is an oligomeric enzyme composed of a large subunit (700 to 1000 residues) and a small subunit (300 to 400 residues) - class II RNRs are less complex, using the small molecule B12 in place of the small chain []. The reduction of ribonucleotides to deoxyribonucleotides involves the transfer of free radicals, the function of each metallocofactor is to generate an active site thiyl radical. This thiyl radical then initiates the nucleotide reduction process by hydrogen atom abstraction from the ribonucleotide []. The radical-based reaction involves five cysteines: two of these are located at adjacent anti-parallel strands in a new type of ten-stranded alpha/β-barrel; two others reside at the carboxyl end in a flexible arm; and the fifth, in a loop in the centre of the barrel, is positioned to initiate the radical reaction []. There are several regions of similarity in the sequence of the large chain of prokaryotes, eukaryotes and viruses spread across 3 domains: an N-terminal domain common to the mammalian and bacterial enzymes; a C-terminal domain common to the mammalian and viral ribonucleotide reductases; and a central domain common to all three []. |
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•
•
•
•
•
|
Protein Domain |
Type: |
Domain |
Description: |
Ribonucleotide reductase (RNR, ) [, ]catalyzes the reductivesynthesis of deoxyribonucleotides from their corresponding ribonucleotides. It provides the precursors necessary for DNA synthesis. RNRs divide into three classes on the basis of their metallocofactor usage. Class I RNRs, found in eukaryotes, bacteria, bacteriophage and viruses, use a diiron-tyrosyl radical, Class II RNRs, found in bacteria, bacteriophage, algae and archaea, use coenzyme B12 (adenosylcobalamin, AdoCbl). Class III RNRs, found in anaerobic bacteria and bacteriophage, use an FeS cluster and S-adenosylmethionine to generate a glycyl radical. Many organisms have more than one class of RNR present in their genomes. Ribonucleotide reductase is an oligomeric enzyme composed of a large subunit (700 to 1000 residues) and a small subunit (300 to 400 residues) - class II RNRs are less complex, using the small molecule B12 in place of the small chain []. The reduction of ribonucleotides to deoxyribonucleotides involves the transfer of free radicals, the function of each metallocofactor is to generate an active site thiyl radical. This thiyl radical then initiates the nucleotide reduction process by hydrogen atom abstraction from the ribonucleotide []. The radical-based reaction involves five cysteines: two of these are located at adjacent anti-parallel strands in a new type of ten-stranded alpha/β-barrel; two others reside at the carboxyl end in a flexible arm; and the fifth, in a loop in the centre of the barrel, is positioned to initiate the radical reaction []. There are several regions of similarity in the sequence of the large chain of prokaryotes, eukaryotes and viruses spread across 3 domains: an N-terminal domain common to the mammalian and bacterial enzymes; a C-terminal domain common to the mammalian and viral ribonucleotide reductases; and a central domain common to all three []. |
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•
•
•
•
•
|
Protein Domain |
Type: |
Domain |
Description: |
XMAP215/Dis1 proteins, such as Alp14 and XMAP215, increase microtubules dynamic polymerization rates by recruiting soluble alpha/beta-tubulin via their conserved TOG domains to polymerizing microtubule plus ends [, ]. A TOG domain contains HEAT repeats.This entry represents a structural domain with an armadillo (ARM)-like fold, consisting of a multi-helical fold comprised of two curved layers of α- helices arranged in a regular right-handed superhelix, where the repeats that make up this structure are arranged about a common axis []. These superhelical structures present an extensive solvent-accessible surface that is well suited to binding large substrates such as proteins and nucleic acids. Domains and repeats with an ARM-like fold have been found in a number of proteins, including:ARM repeat domain, found in beta-catenins, importins, karyopherin and exportins.HEAT repeat domain, found in protein phosphatase 2a and initiation factor eIF4G.PHAT domain, found in the RNA-binding protein Smaug.Leucine-rich repeat variant, which contain an FeS cluster.Pumilio repeat domain, found in Pumilio protein.Regulatory subunit H of V-type ATPases.PBS lyase HEAT-like repeat.Mo25 protein.MIF4G domain-like, found in eukaryotic initiation factor eIF4G, translation initiation factor eIF-2b epsilon and nuclear cap-binding protein CBP80.The N-terminal domain of eukaryotic translation initiation factor 3 subunit 12.The C-terminal domain of leukotriene A4 hydrolase.The helical domain of phosphoinositide 3-kinase.The N-terminal fragment of adaptin alpha-C and beta subunits.The proximal leg segment and the linker domain of the clathrin heavy chain.The sequence similarity among these different repeats or domains is low, however they exhibit considerable structural similarity. Furthermore, the number of repeats present in the superhelical structure can vary between orthologues, indicating that rapid loss/gain of repeats has occurred frequently in evolution. A common phylogenetic origin has been proposed for the armadillo and HEAT repeats []. |
|
•
•
•
•
•
|
Protein Domain |
Type: |
Family |
Description: |
Ribonucleotide reductase (RNR, ) [, ]catalyzes the reductivesynthesis of deoxyribonucleotides from their corresponding ribonucleotides. It provides the precursors necessary for DNA synthesis. RNRs divide into three classes on the basis of their metallocofactor usage. Class I RNRs, found in eukaryotes, bacteria, bacteriophage and viruses, use a diiron-tyrosyl radical, Class II RNRs, found in bacteria, bacteriophage, algae and archaea, use coenzyme B12 (adenosylcobalamin, AdoCbl). Class III RNRs, found in anaerobic bacteria and bacteriophage, use an FeS cluster and S-adenosylmethionine to generate a glycyl radical. Many organisms have more than one class of RNR present in their genomes. Ribonucleotide reductase is an oligomeric enzyme composed of a large subunit (700 to 1000 residues) and a small subunit (300 to 400 residues) - class II RNRs are less complex, using the small molecule B12 in place of the small chain []. The reduction of ribonucleotides to deoxyribonucleotides involves the transfer of free radicals, the function of each metallocofactor is to generate an active site thiyl radical. This thiyl radical then initiates the nucleotide reduction process by hydrogen atom abstraction from the ribonucleotide []. The radical-based reaction involves five cysteines: two of these are located at adjacent anti-parallel strands in a new type of ten-stranded alpha/β-barrel; two others reside at the carboxyl end in a flexible arm; and the fifth, in a loop in the centre of the barrel, is positioned to initiate the radical reaction []. There are several regions of similarity in the sequence of the large chain of prokaryotes, eukaryotes and viruses spread across 3 domains: an N-terminal domain common to the mammalian and bacterial enzymes; a C-terminal domain common to the mammalian and viral ribonucleotide reductases; and a central domain common to all three [].This entry represents the ribonucleotide reductase large subunit from Betaherpesviruses. |
|
•
•
•
•
•
|
Protein Domain |
Type: |
Family |
Description: |
Ribonucleotide reductase (RNR, ) [, ]catalyzes the reductivesynthesis of deoxyribonucleotides from their corresponding ribonucleotides. It provides the precursors necessary for DNA synthesis. RNRs divide into three classes on the basis of their metallocofactor usage. Class I RNRs, found in eukaryotes, bacteria, bacteriophage and viruses, use a diiron-tyrosyl radical, Class II RNRs, found in bacteria, bacteriophage, algae and archaea, use coenzyme B12 (adenosylcobalamin, AdoCbl). Class III RNRs, found in anaerobic bacteria and bacteriophage, use an FeS cluster and S-adenosylmethionine to generate a glycyl radical. Many organisms have more than one class of RNR present in their genomes. Ribonucleotide reductase is an oligomeric enzyme composed of a large subunit (700 to 1000 residues) and a small subunit (300 to 400 residues) - class II RNRs are less complex, using the small molecule B12 in place of the small chain []. The reduction of ribonucleotides to deoxyribonucleotides involves the transfer of free radicals, the function of each metallocofactor is to generate an active site thiyl radical. This thiyl radical then initiates the nucleotide reduction process by hydrogen atom abstraction from the ribonucleotide []. The radical-based reaction involves five cysteines: two of these are located at adjacent anti-parallel strands in a new type of ten-stranded alpha/β-barrel; two others reside at thecarboxyl end in a flexible arm; and the fifth, in a loop in the centre of the barrel, is positioned to initiate the radical reaction []. There are several regions of similarity in the sequence of the large chain of prokaryotes, eukaryotes and viruses spread across 3 domains: an N-terminal domain common to the mammalian and bacterial enzymes; a C-terminal domain common to the mammalian and viral ribonucleotide reductases; and a central domain common to all three [].This entry represents the ribonucleotide reductase large subunit from Alphaherpesviruses. |
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•
•
•
•
•
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Protein Domain |
Type: |
Domain |
Description: |
Ribonucleotide reductase (RNR, ) [, ]catalyzes the reductivesynthesis of deoxyribonucleotides from their corresponding ribonucleotides. It provides the precursors necessary for DNA synthesis. RNRs divide into three classes on the basis of their metallocofactor usage. Class I RNRs, found in eukaryotes, bacteria, bacteriophage and viruses, use a diiron-tyrosyl radical, Class II RNRs, found in bacteria, bacteriophage, algae and archaea, use coenzyme B12 (adenosylcobalamin, AdoCbl). Class III RNRs, found in anaerobic bacteria and bacteriophage, use an FeS cluster and S-adenosylmethionine to generate a glycyl radical. Many organisms have more than one class of RNR present in their genomes. Ribonucleotide reductase is an oligomeric enzyme composed of a large subunit (700 to 1000 residues) and a small subunit (300 to 400 residues) - class II RNRs are less complex, using the small molecule B12 in place of the small chain []. The reduction of ribonucleotides to deoxyribonucleotides involves the transfer of free radicals, the function of each metallocofactor is to generate an active site thiyl radical. This thiyl radical then initiates the nucleotide reduction process by hydrogen atom abstraction from the ribonucleotide []. The radical-based reaction involves five cysteines: two of these are located at adjacent anti-parallel strands in a new type of ten-stranded alpha/β-barrel; two others reside at the carboxyl end in a flexible arm; and the fifth, in a loop in the centre of the barrel, is positioned to initiate the radical reaction []. There are several regions of similarity in the sequence of the large chain of prokaryotes, eukaryotes and viruses spread across 3 domains: an N-terminal domain common to the mammalian and bacterial enzymes; a C-terminal domain common to the mammalian and viral ribonucleotide reductases; and a central domain common to all three []. |
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Publication |
First Author: |
Koutnikova H |
Year: |
1997 |
Journal: |
Nat Genet |
Title: |
Studies of human, mouse and yeast homologues indicate a mitochondrial function for frataxin. |
Volume: |
16 |
Issue: |
4 |
Pages: |
345-51 |
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Protein |
Organism: |
Mus musculus/domesticus |
Length: |
207
 |
Fragment?: |
false |
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Protein |
Organism: |
Mus musculus/domesticus |
Length: |
207
 |
Fragment?: |
false |
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•
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Protein |
Organism: |
Mus musculus/domesticus |
Length: |
207
 |
Fragment?: |
false |
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•
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Protein |
Organism: |
Mus musculus/domesticus |
Length: |
101
 |
Fragment?: |
false |
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•
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Publication |
First Author: |
Dürr A |
Year: |
1996 |
Journal: |
N Engl J Med |
Title: |
Clinical and genetic abnormalities in patients with Friedreich's ataxia. |
Volume: |
335 |
Issue: |
16 |
Pages: |
1169-75 |
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Publication |
First Author: |
Campuzano V |
Year: |
1996 |
Journal: |
Science |
Title: |
Friedreich's ataxia: autosomal recessive disease caused by an intronic GAA triplet repeat expansion. |
Volume: |
271 |
Issue: |
5254 |
Pages: |
1423-7 |
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Publication |
First Author: |
Gibson TJ |
Year: |
1996 |
Journal: |
Trends Neurosci |
Title: |
Friedreich's ataxia protein: phylogenetic evidence for mitochondrial dysfunction. |
Volume: |
19 |
Issue: |
11 |
Pages: |
465-8 |
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Publication |
First Author: |
Eriksson M |
Year: |
1997 |
Journal: |
Structure |
Title: |
Binding of allosteric effectors to ribonucleotide reductase protein R1: reduction of active-site cysteines promotes substrate binding. |
Volume: |
5 |
Issue: |
8 |
Pages: |
1077-92 |
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Publication |
First Author: |
Nilsson O |
Year: |
1988 |
Journal: |
Biochem Soc Trans |
Title: |
Structure-function studies of the large subunit of ribonucleotide reductase from Escherichia coli. |
Volume: |
16 |
Issue: |
2 |
Pages: |
91-4 |
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Publication |
First Author: |
Reichard P |
Year: |
1993 |
Journal: |
Science |
Title: |
From RNA to DNA, why so many ribonucleotide reductases? |
Volume: |
260 |
Issue: |
5115 |
Pages: |
1773-7 |
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Publication |
First Author: |
Sintchak MD |
Year: |
2002 |
Journal: |
Nat Struct Biol |
Title: |
The crystal structure of class II ribonucleotide reductase reveals how an allosterically regulated monomer mimics a dimer. |
Volume: |
9 |
Issue: |
4 |
Pages: |
293-300 |
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Protein |
Organism: |
Mus musculus/domesticus |
Length: |
792
 |
Fragment?: |
false |
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•
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Protein |
Organism: |
Mus musculus/domesticus |
Length: |
792
 |
Fragment?: |
false |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
762
 |
Fragment?: |
true |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
282
 |
Fragment?: |
false |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
295
 |
Fragment?: |
false |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
105
 |
Fragment?: |
true |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
265
 |
Fragment?: |
false |
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•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
247
 |
Fragment?: |
true |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
189
 |
Fragment?: |
true |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
133
 |
Fragment?: |
false |
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•
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Protein |
Organism: |
Mus musculus/domesticus |
Length: |
138
 |
Fragment?: |
true |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
251
 |
Fragment?: |
false |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
140
 |
Fragment?: |
false |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
245
 |
Fragment?: |
false |
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•
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Protein |
Organism: |
Mus musculus/domesticus |
Length: |
249
 |
Fragment?: |
false |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
64
 |
Fragment?: |
false |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
259
 |
Fragment?: |
false |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
135
 |
Fragment?: |
true |
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•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
121
 |
Fragment?: |
false |
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•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
211
 |
Fragment?: |
false |
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•
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Publication |
First Author: |
Nordlund P |
Year: |
1990 |
Journal: |
Nature |
Title: |
Three-dimensional structure of the free radical protein of ribonucleotide reductase. |
Volume: |
345 |
Issue: |
6276 |
Pages: |
593-8 |
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Publication |
First Author: |
Deppenmeier U |
Year: |
2004 |
Journal: |
J Bioenerg Biomembr |
Title: |
The membrane-bound electron transport system of Methanosarcina species. |
Volume: |
36 |
Issue: |
1 |
Pages: |
55-64 |
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Publication |
First Author: |
Dasgupta N |
Year: |
2000 |
Journal: |
J Bacteriol |
Title: |
fleN, a gene that regulates flagellar number in Pseudomonas aeruginosa. |
Volume: |
182 |
Issue: |
2 |
Pages: |
357-64 |
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Publication |
First Author: |
Al-Bassam J |
Year: |
2011 |
Journal: |
Trends Cell Biol |
Title: |
Regulation of microtubule dynamics by TOG-domain proteins XMAP215/Dis1 and CLASP. |
Volume: |
21 |
Issue: |
10 |
Pages: |
604-14 |
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Publication |
First Author: |
Al-Bassam J |
Year: |
2014 |
Journal: |
Methods Enzymol |
Title: |
Reconstituting dynamic microtubule polymerization regulation by TOG domain proteins. |
Volume: |
540 |
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Pages: |
131-48 |
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Publication |
First Author: |
Kurisu G |
Year: |
2003 |
Journal: |
Science |
Title: |
Structure of the cytochrome b6f complex of oxygenic photosynthesis: tuning the cavity. |
Volume: |
302 |
Issue: |
5647 |
Pages: |
1009-14 |
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Publication |
First Author: |
Uhlin U |
Year: |
1994 |
Journal: |
Nature |
Title: |
Structure of ribonucleotide reductase protein R1. |
Volume: |
370 |
Issue: |
6490 |
Pages: |
533-9 |
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Protein |
Organism: |
Mus musculus/domesticus |
Length: |
275
 |
Fragment?: |
false |
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•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
319
 |
Fragment?: |
false |
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•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
853
 |
Fragment?: |
false |
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•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
1286
 |
Fragment?: |
false |
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•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
1776
 |
Fragment?: |
false |
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•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
1002
 |
Fragment?: |
false |
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•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
319
 |
Fragment?: |
false |
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•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
1287
 |
Fragment?: |
false |
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•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
1776
 |
Fragment?: |
false |
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•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
1826
 |
Fragment?: |
false |
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•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
306
 |
Fragment?: |
true |
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•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
1089
 |
Fragment?: |
false |
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•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
677
 |
Fragment?: |
true |
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•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
139
 |
Fragment?: |
false |
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•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
1308
 |
Fragment?: |
false |
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•
•
•
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Protein |
Organism: |
Mus musculus/domesticus |
Length: |
1776
 |
Fragment?: |
false |
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•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
1307
 |
Fragment?: |
false |
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•
•
•
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Protein |
Organism: |
Mus musculus/domesticus |
Length: |
441
 |
Fragment?: |
false |
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