Type |
Details |
Score |
Gene |
Type: |
gene |
Organism: |
human |
|
•
•
•
•
•
|
Gene |
Type: |
gene |
Organism: |
frog, western clawed |
|
•
•
•
•
•
|
Gene |
|
•
•
•
•
•
|
Gene |
Type: |
gene |
Organism: |
chimpanzee |
|
•
•
•
•
•
|
Gene |
Type: |
gene |
Organism: |
dog, domestic |
|
•
•
•
•
•
|
Gene |
Type: |
gene |
Organism: |
cattle |
|
•
•
•
•
•
|
Gene |
Type: |
gene |
Organism: |
chicken |
|
•
•
•
•
•
|
Gene |
Type: |
gene |
Organism: |
zebrafish |
|
•
•
•
•
•
|
Gene |
Type: |
gene |
Organism: |
macaque, rhesus |
|
•
•
•
•
•
|
Protein Domain |
Type: |
Family |
Description: |
The Mediator complex is a coactivator involved in the regulated transcription of nearly all RNA polymerase II-dependent genes. Mediator functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. The Mediator complex, having a compact conformation in its free form, is recruited to promoters by direct interactions with regulatory proteins and serves for the assembly of a functional preinitiation complex with RNA polymerase II and the general transcription factors. On recruitment the Mediator complex unfolds to an extended conformation and partially surrounds RNA polymerase II, specifically interacting with the unphosphorylated form of the C-terminal domain (CTD) of RNA polymerase II. The Mediator complex dissociates from the RNA polymerase II holoenzyme and stays at the promoter when transcriptional elongation begins. The Mediator complex is composed of at least 31 subunits: MED1, MED4, MED6, MED7, MED8, MED9, MED10, MED11, MED12, MED13, MED13L, MED14, MED15, MED16, MED17, MED18, MED19, MED20, MED21, MED22, MED23, MED24, MED25, MED26, MED27, MED29, MED30, MED31, CCNC, CDK8 and CDC2L6/CDK11. The subunits form at least three structurally distinct submodules. The head and the middle modules interact directly with RNA polymerase II, whereas the elongated tail module interacts with gene-specific regulatory proteins. Mediator containing the CDK8 module is less active than Mediator lacking this module in supporting transcriptional activation.The head module contains: MED6, MED8, MED11, SRB4/MED17, SRB5/MED18, ROX3/MED19, SRB2/MED20 and SRB6/MED22. The middle module contains: MED1, MED4, NUT1/MED5, MED7, CSE2/MED9, NUT2/MED10, SRB7/MED21 and SOH1/MED31. CSE2/MED9 interacts directly with MED4. The tail module contains: MED2, PGD1/MED3, RGR1/MED14, GAL11/MED15 and SIN4/MED16. The CDK8 module contains: MED12, MED13, CCNC and CDK8. Individual preparations of the Mediator complex lacking one or more distinct subunits have been variously termed ARC, CRSP, DRIP, PC2, SMCC and TRAP.This entry represents subunit Med22 of the Mediator complex. It contains several eukaryotic Surfeit locus protein 5 (SURF5) sequences. The human Surfeit locus has been mapped on chromosome 9q34.1. The locus includes six tightly clustered housekeeping genes (Surf1-6), and the gene organisation is similar in human, mouse and chicken Surfeit loci []. |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Publication |
First Author: |
Angiolillo A |
Year: |
2002 |
Journal: |
Gene |
Title: |
The human homologue of the mouse Surf5 gene encodes multiple alternatively spliced transcripts. |
Volume: |
284 |
Issue: |
1-2 |
Pages: |
169-78 |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
200
 |
Fragment?: |
false |
|
•
•
•
•
•
|
Protein |
Organism: |
Mus musculus/domesticus |
Length: |
168
 |
Fragment?: |
true |
|
•
•
•
•
•
|
Publication |
First Author: |
Rodriguez PQ |
Year: |
2020 |
Journal: |
Sci Rep |
Title: |
Inactivation of mediator complex protein 22 in podocytes results in intracellular vacuole formation, podocyte loss and premature death. |
Volume: |
10 |
Issue: |
1 |
Pages: |
20037 |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
Mus caroli |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
mouse, laboratory |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
Mus pahari |
|
•
•
•
•
•
|
Protein Coding Gene |
Type: |
protein_coding_gene |
Organism: |
Mus spretus |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:2651416 |
Assay Type: |
RT-PCR |
Annotation Date: |
2003-03-17 |
Strength: |
Present |
Sex: |
Not Specified |
Emaps: |
EMAPS:1603911 |
|
Stage: |
TS11 |
Assay Id: |
MGI:2651437 |
Age: |
embryonic day 7.5 |
|
|
Specimen Label: |
+/+ |
Detected: |
true |
Specimen Num: |
1 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:2651416 |
Assay Type: |
RT-PCR |
Annotation Date: |
2003-03-17 |
Strength: |
Present |
Sex: |
Not Specified |
Emaps: |
EMAPS:1603911 |
|
Stage: |
TS11 |
Assay Id: |
MGI:2651437 |
Age: |
embryonic day 7.5 |
|
|
Specimen Label: |
-/- |
Detected: |
true |
Specimen Num: |
2 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:2651416 |
Assay Type: |
RT-PCR |
Annotation Date: |
2003-03-17 |
Strength: |
Present |
Sex: |
Not Specified |
Emaps: |
EMAPS:1603911 |
|
Stage: |
TS11 |
Assay Id: |
MGI:2651437 |
Age: |
embryonic day 7.5 |
|
|
Specimen Label: |
-/- |
Detected: |
true |
Specimen Num: |
3 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:2651416 |
Assay Type: |
RT-PCR |
Annotation Date: |
2003-03-17 |
Strength: |
Present |
Sex: |
Not Specified |
Emaps: |
EMAPS:1603911 |
|
Stage: |
TS11 |
Assay Id: |
MGI:2651437 |
Age: |
embryonic day 7.5 |
|
|
Specimen Label: |
-/- |
Detected: |
true |
Specimen Num: |
4 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:2651416 |
Assay Type: |
RT-PCR |
Annotation Date: |
2003-03-17 |
Strength: |
Present |
Sex: |
Not Specified |
Emaps: |
EMAPS:1603911 |
|
Stage: |
TS11 |
Assay Id: |
MGI:2651437 |
Age: |
embryonic day 7.5 |
|
|
Specimen Label: |
-/- |
Detected: |
true |
Specimen Num: |
5 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:7645720 |
Assay Type: |
RT-PCR |
Annotation Date: |
2024-06-09 |
Strength: |
Present |
Sex: |
Not Specified |
Emaps: |
EMAPS:1718522 |
|
Stage: |
TS22 |
Assay Id: |
MGI:7645804 |
Age: |
embryonic day 14.5 |
Image: |
3 |
|
Specimen Label: |
E14.5 |
Detected: |
true |
Specimen Num: |
1 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:7645720 |
Assay Type: |
RT-PCR |
Annotation Date: |
2024-06-09 |
Strength: |
Present |
Sex: |
Not Specified |
Emaps: |
EMAPS:1718526 |
|
Stage: |
TS26 |
Assay Id: |
MGI:7645804 |
Age: |
embryonic day 18.5 |
Image: |
3 |
|
Specimen Label: |
E18.5 |
Detected: |
true |
Specimen Num: |
2 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:7645720 |
Assay Type: |
RT-PCR |
Annotation Date: |
2024-06-09 |
Strength: |
Present |
Sex: |
Not Specified |
Emaps: |
EMAPS:1718528 |
|
Stage: |
TS28 |
Assay Id: |
MGI:7645804 |
Age: |
postnatal day 5 |
Image: |
3 |
|
Specimen Label: |
P5 |
Detected: |
true |
Specimen Num: |
3 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:7645720 |
Assay Type: |
RT-PCR |
Annotation Date: |
2024-06-09 |
Strength: |
Present |
Sex: |
Not Specified |
Emaps: |
EMAPS:1718528 |
|
Stage: |
TS28 |
Assay Id: |
MGI:7645804 |
Age: |
postnatal day 40 |
Image: |
3 |
|
Specimen Label: |
P40 |
Detected: |
true |
Specimen Num: |
4 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:7645720 |
Assay Type: |
RT-PCR |
Annotation Date: |
2024-06-09 |
Strength: |
Present |
Sex: |
Male |
Emaps: |
EMAPS:3586628 |
|
Stage: |
TS28 |
Assay Id: |
MGI:7645810 |
Age: |
postnatal month 3 |
Image: |
6 |
|
Specimen Label: |
3 mon |
Detected: |
true |
Specimen Num: |
1 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:7645720 |
Assay Type: |
RT-PCR |
Annotation Date: |
2024-06-09 |
Strength: |
Present |
Sex: |
Male |
Emaps: |
EMAPS:3586628 |
|
Stage: |
TS28 |
Assay Id: |
MGI:7645810 |
Age: |
postnatal month 24 |
Image: |
6 |
|
Specimen Label: |
24 mon |
Detected: |
true |
Specimen Num: |
2 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:7645720 |
Assay Type: |
RT-PCR |
Annotation Date: |
2024-06-09 |
Strength: |
Present |
Sex: |
Male |
Emaps: |
EMAPS:3586628 |
|
Stage: |
TS28 |
Assay Id: |
MGI:7645849 |
Age: |
postnatal week 8-10 |
Image: |
7 |
|
Specimen Label: |
Wt |
Detected: |
true |
Specimen Num: |
1 |
|
•
•
•
•
•
|
GXD Expression |
Probe: |
MGI:7645720 |
Assay Type: |
RT-PCR |
Annotation Date: |
2024-06-09 |
Strength: |
Present |
Sex: |
Male |
Emaps: |
EMAPS:3586628 |
|
Stage: |
TS28 |
Assay Id: |
MGI:7645849 |
Age: |
postnatal week 8-10 |
Image: |
7 |
|
Specimen Label: |
mdx |
Detected: |
true |
Specimen Num: |
2 |
|
•
•
•
•
•
|
Publication |
First Author: |
Garson K |
Year: |
1995 |
Journal: |
Genomics |
Title: |
Surf5: a gene in the tightly clustered mouse surfeit locus is highly conserved and transcribed divergently from the rpL7A (Surf3) gene. |
Volume: |
30 |
Issue: |
2 |
Pages: |
163-70 |
|
•
•
•
•
•
|
Publication |
First Author: |
Huxley C |
Year: |
1990 |
Journal: |
Mol Cell Biol |
Title: |
The mouse surfeit locus contains a cluster of six genes associated with four CpG-rich islands in 32 kilobases of genomic DNA. |
Volume: |
10 |
Issue: |
2 |
Pages: |
605-14 |
|
•
•
•
•
•
|
Publication |
First Author: |
Magoulas C |
Year: |
1996 |
Journal: |
DNA Cell Biol |
Title: |
The Surf-6 gene of the mouse surfeit locus encodes a novel nucleolar protein. |
Volume: |
15 |
Issue: |
4 |
Pages: |
305-16 |
|
•
•
•
•
•
|
Publication |
First Author: |
Yu LC |
Year: |
1993 |
Journal: |
Biochem J |
Title: |
Primary structure and characterization of an androgen-stimulated autoantigen purified from mouse seminal-vesicle secretion. |
Volume: |
296 ( Pt 3) |
|
Pages: |
571-6 |
|
•
•
•
•
•
|
Publication |
First Author: |
Agostino A |
Year: |
2003 |
Journal: |
Hum Mol Genet |
Title: |
Constitutive knockout of Surf1 is associated with high embryonic lethality, mitochondrial disease and cytochrome c oxidase deficiency in mice. |
Volume: |
12 |
Issue: |
4 |
Pages: |
399-413 |
|
•
•
•
•
•
|
Publication |
First Author: |
Tomomori-Sato C |
Year: |
2004 |
Journal: |
J Biol Chem |
Title: |
A mammalian mediator subunit that shares properties with Saccharomyces cerevisiae mediator subunit Cse2. |
Volume: |
279 |
Issue: |
7 |
Pages: |
5846-51 |
|
•
•
•
•
•
|
Publication |
First Author: |
Mittler G |
Year: |
2001 |
Journal: |
EMBO Rep |
Title: |
Novel critical role of a human Mediator complex for basal RNA polymerase II transcription. |
Volume: |
2 |
Issue: |
9 |
Pages: |
808-13 |
|
•
•
•
•
•
|
Publication |
First Author: |
Kolonay DW |
Year: |
2024 |
Journal: |
Front Cell Dev Biol |
Title: |
Temporal regulation of the Mediator complex during muscle proliferation, differentiation, regeneration, aging, and disease. |
Volume: |
12 |
|
Pages: |
1331563 |
|
•
•
•
•
•
|
Publication |
First Author: |
Mouse Genome Informatics and the Wellcome Trust Sanger Institute Mouse Genetics Project (MGP) |
Year: |
2011 |
Journal: |
Database Release |
Title: |
Obtaining and Loading Phenotype Annotations from the Wellcome Trust Sanger Institute (WTSI) Mouse Resources Portal |
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|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Birgit Meldal and Sandra Orchard (1). (1) European Bioinformatics Institute (EBI), Hinxton, Cambridgeshire, United Kingdom |
Year: |
2023 |
|
Title: |
Manual transfer of experimentally-verified manual GO annotation data to homologous complexes by curator judgment of sequence, composition and function similarity |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
International Committee on Standardized Genetic Nomenclature for Mice |
Year: |
1993 |
|
Title: |
Nomenclature rule change to delete hyphens and parentheses from mouse locus symbols |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Ingham NJ |
Year: |
2019 |
Journal: |
PLoS Biol |
Title: |
Mouse screen reveals multiple new genes underlying mouse and human hearing loss. |
Volume: |
17 |
Issue: |
4 |
Pages: |
e3000194 |
|
•
•
•
•
•
|
Publication |
First Author: |
Mouse Genome Informatics Scientific Curators |
Year: |
2005 |
|
Title: |
Mouse Synonym Curation |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Wellcome Trust Sanger Institute |
Year: |
2010 |
Journal: |
MGI Direct Data Submission |
Title: |
Alleles produced for the EUCOMM and EUCOMMTools projects by the Wellcome Trust Sanger Institute |
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|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Mouse Genome Informatics and the International Mouse Phenotyping Consortium (IMPC) |
Year: |
2014 |
Journal: |
Database Release |
Title: |
Obtaining and Loading Phenotype Annotations from the International Mouse Phenotyping Consortium (IMPC) Database |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Helmholtz Zentrum Muenchen GmbH |
Year: |
2010 |
Journal: |
MGI Direct Data Submission |
Title: |
Alleles produced for the EUCOMM and EUCOMMTools projects by the Helmholtz Zentrum Muenchen GmbH (Hmgu) |
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|
|
|
•
•
•
•
•
|
Publication |
First Author: |
DDB, FB, MGI, GOA, ZFIN curators |
Year: |
2001 |
|
Title: |
Gene Ontology annotation through association of InterPro records with GO terms |
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|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Carninci P |
Year: |
2005 |
Journal: |
Science |
Title: |
The transcriptional landscape of the mammalian genome. |
Volume: |
309 |
Issue: |
5740 |
Pages: |
1559-63 |
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•
•
•
•
•
|
Publication |
First Author: |
Adams DJ |
Year: |
2024 |
Journal: |
Nature |
Title: |
Genetic determinants of micronucleus formation in vivo. |
Volume: |
627 |
Issue: |
8002 |
Pages: |
130-136 |
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•
•
•
•
•
|
Publication |
First Author: |
MGD Nomenclature Committee |
Year: |
1995 |
|
Title: |
Nomenclature Committee Use |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Skarnes WC |
Year: |
2011 |
Journal: |
Nature |
Title: |
A conditional knockout resource for the genome-wide study of mouse gene function. |
Volume: |
474 |
Issue: |
7351 |
Pages: |
337-42 |
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•
•
•
•
•
|
Publication |
First Author: |
Cyagen Biosciences Inc. |
Year: |
2022 |
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Title: |
Cyagen Biosciences Website. |
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•
•
•
•
•
|
Publication |
First Author: |
The Jackson Laboratory Mouse Radiation Hybrid Database |
Year: |
2004 |
Journal: |
Database Release |
Title: |
Mouse T31 Radiation Hybrid Data Load |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
The Gene Ontology Consortium |
Year: |
2010 |
|
Title: |
Automated transfer of experimentally-verified manual GO annotation data to mouse-human orthologs |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Diez-Roux G |
Year: |
2011 |
Journal: |
PLoS Biol |
Title: |
A high-resolution anatomical atlas of the transcriptome in the mouse embryo. |
Volume: |
9 |
Issue: |
1 |
Pages: |
e1000582 |
|
•
•
•
•
•
|
Publication |
First Author: |
Mouse Genome Informatics Scientific Curators |
Year: |
2002 |
|
Title: |
Mouse Genome Informatics Computational Sequence to Gene Associations |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Mouse Genome Informatics Scientific Curators |
Year: |
2010 |
Journal: |
Database Download |
Title: |
Mouse Microarray Data Integration in Mouse Genome Informatics, the Affymetrix GeneChip Mouse Genome U74 Array Platform (A, B, C v2). |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
MGI Genome Annotation Group and UniGene Staff |
Year: |
2015 |
Journal: |
Database Download |
Title: |
MGI-UniGene Interconnection Effort |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Marc Feuermann, Huaiyu Mi, Pascale Gaudet, Dustin Ebert, Anushya Muruganujan, Paul Thomas |
Year: |
2010 |
|
Title: |
Annotation inferences using phylogenetic trees |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Mouse Genome Database and National Center for Biotechnology Information |
Year: |
2000 |
Journal: |
Database Release |
Title: |
Entrez Gene Load |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Allen Institute for Brain Science |
Year: |
2004 |
Journal: |
Allen Institute |
Title: |
Allen Brain Atlas: mouse riboprobes |
|
|
|
|
•
•
•
•
•
|
Publication |
First Author: |
Mouse Genome Informatics Scientific Curators |
Year: |
2009 |
Journal: |
Database Download |
Title: |
Mouse Microarray Data Integration in Mouse Genome Informatics, the Affymetrix GeneChip Mouse Gene 1.0 ST Array Platform |
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Publication |
First Author: |
Mouse Genome Informatics (MGI) and The National Center for Biotechnology Information (NCBI) |
Year: |
2010 |
Journal: |
Database Download |
Title: |
Consensus CDS project |
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Publication |
First Author: |
Mouse Genome Informatics Group |
Year: |
2003 |
Journal: |
Database Procedure |
Title: |
Automatic Encodes (AutoE) Reference |
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Publication |
First Author: |
Bairoch A |
Year: |
1999 |
Journal: |
Database Release |
Title: |
SWISS-PROT Annotated protein sequence database |
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Publication |
First Author: |
Mouse Genome Informatics Scientific Curators |
Year: |
2005 |
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Title: |
Obtaining and Loading Genome Assembly Coordinates from Ensembl Annotations |
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Publication |
First Author: |
Mouse Genome Informatics |
Year: |
2010 |
Journal: |
Database Release |
Title: |
Protein Ontology Association Load. |
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Publication |
First Author: |
Mouse Genome Informatics Scientific Curators |
Year: |
2005 |
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Title: |
Obtaining and loading genome assembly coordinates from NCBI annotations |
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Publication |
First Author: |
Mouse Genome Informatics Scientific Curators |
Year: |
2009 |
Journal: |
Database Download |
Title: |
Mouse Microarray Data Integration in Mouse Genome Informatics, the Affymetrix GeneChip Mouse Genome 430 2.0 Array Platform |
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Protein Domain |
Type: |
Family |
Description: |
This entry represents the Med22 subunit of the Mediator complex in Saccharomycetaceae.The Mediator complex is a coactivator involved in the regulated transcription of nearly all RNA polymerase II-dependent genes. Mediator functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. The Mediator complex, having a compact conformation in its free form, is recruited to promoters by direct interactions with regulatory proteins and serves for the assembly of a functional preinitiation complex with RNA polymerase II and the general transcription factors. On recruitment the Mediator complex unfolds to an extended conformation and partially surrounds RNA polymerase II, specifically interacting with the unphosphorylated form of the C-terminal domain (CTD) of RNA polymerase II. The Mediator complex dissociates from the RNA polymerase II holoenzyme and stays at the promoter when transcriptional elongation begins. The Mediator complex is composed of at least 31 subunits: MED1, MED4, MED6, MED7, MED8, MED9, MED10, MED11, MED12, MED13, MED13L, MED14, MED15, MED16, MED17, MED18, MED19, MED20, MED21, MED22, MED23, MED24, MED25, MED26, MED27, MED29, MED30, MED31, CCNC, CDK8 and CDC2L6/CDK11. The subunits form at least three structurally distinct submodules. The head and the middle modules interact directly with RNA polymerase II, whereas the elongated tail module interacts with gene-specific regulatory proteins. Mediator containing the CDK8 module is less active than Mediator lacking this module in supporting transcriptional activation.The head module contains: MED6, MED8, MED11, SRB4/MED17, SRB5/MED18, ROX3/MED19, SRB2/MED20 and SRB6/MED22. The middle module contains: MED1, MED4, NUT1/MED5, MED7, CSE2/MED9, NUT2/MED10, SRB7/MED21 and SOH1/MED31. CSE2/MED9 interacts directly with MED4. The tail module contains: MED2, PGD1/MED3, RGR1/MED14, GAL11/MED15 and SIN4/MED16. The CDK8 module contains: MED12, MED13, CCNC and CDK8. Individual preparations of the Mediator complex lacking one or more distinct subunits have been variously termed ARC, CRSP, DRIP, PC2, SMCC and TRAP. |
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