This entry represents a domain found in the human Mediator of RNA polymerase II transcription subunit 14 (Med14) and related proteins. Med14 is a component of the Mediator complex, a coactivator involved in the regulated transcription of nearly all R ...
This entry represents a domain found in the human Mediator of RNA polymerase II transcription subunit 14 (Med14) and related proteins. Med14 is a component of the Mediator complex, 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. Mediator is recruited to promoters by direct interactions with regulatory proteins and serves as a scaffold for the assembly of a functional preinitiation complex with RNA polymerase II and the general transcription factors [1]. The major portion of Med14 exists in the Head-Shoulder module of the Mediator and consists of nine tandem repeats (RM1 to RM9), which are arranged in an atypical right-handed helix [2]. This entry represents a domain located at the C terminus and predicted to adopt a globular alpha/beta structure.
This domain is found at the C-terminus of the Med15 subunit of the ARC-Mediator co-activator. In addition, Med15 is a critical transducer of gene activation signals that control early metazoan development. This domain is structurally similar to the R ...
This domain is found at the C-terminus of the Med15 subunit of the ARC-Mediator co-activator. In addition, Med15 is a critical transducer of gene activation signals that control early metazoan development. This domain is structurally similar to the RWD domain.
Mediator complex subunit 16, central helical bridge
Med16 is one of the subunits of the Tail portion of the Mediator complex and is required for lipopolysaccharide gene-expression. This entry represents the central helical bridge domain [1,2].
Med16 is one of the subunits of the Tail portion of the Mediator complex and is required for lipopolysaccharide gene-expression [2]. This is the small alpha-beta domain found at the C-terminal of Mediator complex subunit 16 [1].
Med18 is one subunit of Mediator, a head-module multiprotein complex, that stimulates basal RNA polymerase II (Pol II) transcription. Med18 consists of an eight-stranded beta-barrel with a central pore and three flanking helices. It complexes with Me ...
Med18 is one subunit of Mediator, a head-module multiprotein complex, that stimulates basal RNA polymerase II (Pol II) transcription. Med18 consists of an eight-stranded beta-barrel with a central pore and three flanking helices. It complexes with Med8 and Med20 proteins by forming a heterodimer of two-fold symmetry with Med20 and binding the C-terminal alpha-helix region of Med8 across the top of its barrel. This complex creates a multipartite TBP-binding site that can be modulated by transcriptional activators [1].
Mediator complex subunit 25 von Willebrand factor type A
The overall function of the full-length Med25 is efficiently to coordinate the transcriptional activation of RAR/RXR (retinoic acid receptor/retinoic X receptor) in higher eukaryotic cells. Human Med25 consists of several domains with different bindi ...
The overall function of the full-length Med25 is efficiently to coordinate the transcriptional activation of RAR/RXR (retinoic acid receptor/retinoic X receptor) in higher eukaryotic cells. Human Med25 consists of several domains with different binding properties, the N-terminal, VWA domain which is this one, an SD2 domain from residues 229-381, a PTOV(B) or ACID domain from 395-545, an SD2 domain from residues 564-645 and a C-terminal NR box-containing domain (646-650) from 646-747. This VWA or von Willebrand factor type A domain when bound to RAR and the histone acetyltransferase CBP is responsible for recruiting Med1 to the rest of the Mediator complex [3].