Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APkinase_Tyre7kpxA1 A: a+b complex topologyX: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)H: Protein kinase/SAICAR synthase/ATP-graspT: Protein kinaseF: Pkinase_TyrECOD (1.6)
BCyclin_N_1e7kpxB1 A: alpha arraysX: HTHH: HTHT: Cyclin-likeF: Cyclin_N_1ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00134Cyclin, N-terminal domain (Cyclin_N)Cyclin, N-terminal domainCyclins regulate cyclin dependent kinases (CDKs). Swiss:P22674 is a Uracil-DNA glycosylase that is related to other cyclins [4]. Cyclins contain two domains of similar all-alpha fold, of which this family corresponds with the N-terminal domain.Domain
PF09497Transcription mediator complex subunit Med12 (Med12)Transcription mediator complex subunit Med12Med12 is a negative regulator of the Gli3-dependent sonic hedgehog signalling pathway via its interaction with Gli3 within the RNA polymerase II transcriptional Mediator. A complex is formed between Med12, Med13, CDK8 and CycC which is responsible fo ...Med12 is a negative regulator of the Gli3-dependent sonic hedgehog signalling pathway via its interaction with Gli3 within the RNA polymerase II transcriptional Mediator. A complex is formed between Med12, Med13, CDK8 and CycC which is responsible for suppression of transcription. This subunit forms part of the Kinase section of Mediator [2].
Domain
PF11597Mediator complex subunit 13 N-terminal (Med13_N)Mediator complex subunit 13 N-terminalMediator is a large complex of up to 33 proteins that is conserved from plants through fungi to humans - the number and representation of individual subunits varying with species [1-2]. It is arranged into four different sections, a core, a head, a t ...Mediator is a large complex of up to 33 proteins that is conserved from plants through fungi to humans - the number and representation of individual subunits varying with species [1-2]. It is arranged into four different sections, a core, a head, a tail and a kinase-activity part, and the number of subunits within each of these is what varies with species. Overall, Mediator regulates the transcriptional activity of RNA polymerase II but it would appear that each of the four different sections has a slightly different function. Med13 is part of the ancillary kinase module, together with Med12, CDK8 and CycC, which in yeast is implicated in transcriptional repression, though most of this activity is likely attributable to the CDK8 kinase. The large Med12 and Med13 proteins are required for specific developmental processes in Drosophila, zebrafish, and Caenorhabditis elegans but their biochemical functions are not understood [4].
Domain
PF06333Mediator complex subunit 13 C-terminal domain (Med13_C)Mediator complex subunit 13 C-terminal domainMediator is a large complex of up to 33 proteins that is conserved from plants through fungi to humans - the number and representation of individual subunits varying with species [1-2]. It is arranged into four different sections, a core, a head, a t ...Mediator is a large complex of up to 33 proteins that is conserved from plants through fungi to humans - the number and representation of individual subunits varying with species [1-2]. It is arranged into four different sections, a core, a head, a tail and a kinase-activity part, and the number of subunits within each of these is what varies with species. Overall, Mediator regulates the transcriptional activity of RNA polymerase II but it would appear that each of the four different sections has a slightly different function. Med13 is part of the ancillary kinase module, together with Med12, CDK8 and CycC, which in yeast is implicated in transcriptional repression, though most of this activity is likely attributable to the CDK8 kinase. The large Med12 and Med13 proteins are required for specific developmental processes in Drosophila, zebrafish, and Caenorhabditis elegans but their biochemical functions are not understood [4]. This domain is also identified as an RNaseH domain of the medPIWI PIWI/Argonaute module. medPIWI is the core domain found in the Med13 protein. The medPIWI module in Med13 is predicted to bind double-stranded nucleic acids, triggering the experimentally-observed conformational switch in the CDK8 subcomplex which regulates the Mediator complex [5].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
Meiotic mRNA stability protein kinase SSN3
RNA polymerase II holoenzyme cyclin-like subunit
Mediator of RNA polymerase II transcription subunit 12
Mediator of RNA polymerase II transcription subunit 13