This is the N-terminal domain found in Zmiz1 proteins (Zinc finger MIZ domain-containing protein 1). Zmiz1 is a direct Notch1 cofactor that heterogeneously regulates Notch target genes. Zmiz1 directly interacts with the RAM1 domain of Notch1 through this N-terminal tetratricopeptide repeat (TPR) domain. Furthermore, it has been shown that Zmiz1 and Notch1 cooperatively recruit each other to chromatin through direct interaction via the N-terminal TPR domain resulting in a slight increase in activating histone marks and decrease of repressive histone marks. Functional analysis indicate that the N-terminal Domain of Zmiz1 is important for driving Myc transcription and proliferation indirectly [].
The Notch domain is also called the 'DSL' domain or the Lin-12/Notch repeat (LNR). The LNR region is present only in Notch related proteins C-terminal to EGF repeats. The lin-12/Notch proteins act as transmembrane receptors for intercellular signals that specify cell fates during animal development. In response to a ligand, proteolytic cleavages release the intracellular domain of Notch, which then gains access to the nucleus and acts as a transcriptional co-activator []. The LNR region is supposed to negatively regulate the Lin-12/Notch proteins activity. It is a triplication of an around 35-40 amino acids module present on the extracellular part of the protein [, ]. Each module contains six cysteine residues engaged in three disulphide bonds and three conserved aspartate and asparagine residues []. The biochemical characterisation of a recombinantly expressed LIN-12.1 module from the human Notch1 receptor indicate that the disulphide bonds are formed between the firstand fifth, second and fourth, and third and sixth cysteines. The formation of this particular disulphide isomer is favored by the presence of Ca2+,which is also required to maintain the structural integrity of the rLIN-12.1 module. The conserved aspartate and asparagine residues are likely to be important for Ca2+binding, and thereby contribute to the native fold.
This entry represents the N-terminal domain found in a family of neurogenic mastermind-like proteins (MAMLs), which act as critical transcriptional co-activators for Notch signaling [, , ]. Notch receptors are cleaved upon ligand engagement and the intracellular domain of Notch shuttles to the nucleus. MAMLs form a functional DNA-binding complex with the cleaved Notch receptor and the transcription factor CSL, thereby regulating transcriptional events that are specific to the Notch pathway. MAML proteins may also play roles as key transcriptional co-activators in other signal transduction pathways as well, including: muscle differentiation and myopathies (MEF2C) [], tumour suppressor pathway (p53) []and colon carcinoma survival (beta-catenin) []. MAML proteins could mediate cross-talk among the various signaling pathways and the diverse activities of the MAML proteins converge to impact normal biological processes and human diseases, including cancers.The N-terminal domain of MAML proteins adopt an elongated kinked helix that wraps around ANK and CSL forming one of the complexes in the build-up of the Notch transcriptional complex for recruiting general transcription factors []. This N-terminal domain is responsible for its interaction with the ankyrin repeat region of the Notch proteins NOTCH1 [], NOTCH2 [], NOTCH3 []and NOTCH4. It forms a DNA-binding complex with Notch proteins and RBPSUH/RBP-J kappa/CBF1, and also binds CREBBP/CBP []and CDK8 []. The C-terminal region is required for transcriptional activation.
This family includes the neurogenic mastermind-like proteins 1-3 (MAML1-3) from chordates, which act as critical transcriptional co-activators for Notch signaling [, ]. Notch receptors are cleaved upon ligand engagement and the intracellular domain of Notch shuttles to the nucleus. MAMLs form a functional DNA-binding complex with the cleaved Notch receptor and the transcription factor CSL, thereby regulating transcriptional events that are specific to the Notch pathway. MAML proteins may also play roles as key transcriptional co-activators in other signal transduction pathways as well, including: muscle differentiation and myopathies (MEF2C) [], tumour suppressor pathway (p53) []and colon carcinoma survival (beta-catenin) []. MAML proteins could mediate cross-talk among the various signaling pathways and the diverse activities of the MAML proteins converge to impact normal biological processes and human diseases, including cancers.They consist of an N-terminal domain which adopt an elongated kinked helix that wraps around ANK and CSL forming one of the complexes in the build-up of the Notch transcriptional complex for recruiting general transcription factors [, ]]. This N-terminal domain is responsible for its interaction with the ankyrin repeat region of the Notch proteins NOTCH1 [], NOTCH2 [], NOTCH3 []and NOTCH4. It forms a DNA-binding complex with Notch proteins and RBPSUH/RBP-J kappa/CBF1, and also binds CREBBP/CBP []and CDK8 []. The C-terminal region is required for transcriptional activation.
This entry represents the N-terminal domain found in a family of neurogenic mastermind-like proteins (MAMLs), which act as critical transcriptional co-activators for Notch signaling [, , ]. Notch receptors are cleaved upon ligand engagement and the intracellular domain of Notch shuttles to the nucleus. MAMLs form a functional DNA-binding complex with the cleaved Notch receptor and the transcription factor CSL, thereby regulating transcriptional events that are specific to the Notch pathway. MAML proteins may also play roles as key transcriptional co-activators in other signal transduction pathways as well, including: muscle differentiation and myopathies (MEF2C) [], tumour suppressor pathway (p53) []and colon carcinoma survival (beta-catenin) []. MAML proteins could mediate cross-talk among the various signaling pathways and the diverse activities of the MAML proteins converge to impact normal biological processes and human diseases, including cancers.The N-terminal domain of MAML proteins adopt an elongated kinked helix that wraps around ANK and CSL forming one of the complexes in the build-up of the Notch transcriptional complex for recruiting general transcription factors []. This N-terminal domain is responsible for its interaction with the ankyrin repeat region of the Notch proteins NOTCH1 [], NOTCH2 [], NOTCH3 []and NOTCH4. It forms a DNA-binding complex with Notch proteins and RBPSUH/RBP-J kappa/CBF1, and also binds CREBBP/CBP []and CDK8 []. The C-terminal region is required for transcriptional activation.
The Notch domain is also called the 'DSL' domain or the Lin-12/Notch repeat (LNR). The LNR region is present only in Notch related proteins C-terminal to EGF repeats. The lin-12/Notch proteins act as transmembrane receptors for intercellular signals that specify cell fates during animal development. In response to a ligand, proteolytic cleavages release the intracellular domain of Notch, which then gains access to the nucleus and acts as a transcriptional co-activator []. The LNR region is supposed to negatively regulate the Lin-12/Notch proteins activity. It is a triplication of an around 35-40 amino acids module present on the extracellular part of the protein [, ]. Each module contains six cysteine residues engaged in three disulphide bonds and three conserved aspartate and asparagine residues []. The biochemical characterisation of a recombinantly expressed LIN-12.1 module from the human Notch1 receptor indicate that the disulphide bonds are formed between the firstand fifth, second and fourth, and third and sixth cysteines. The formation of this particular disulphide isomer is favored by the presence of Ca2+, which is also required to maintain the structural integrity of the rLIN-12.1 module. The conserved aspartate and asparagine residues are likely to be important for Ca2+binding, and thereby contribute to the native fold.
