MED14

The activation of gene transcription is a multistep process that is triggered by factors that recognize transcriptional enhancer sites in DNA. These factors work with co-activators to direct transcriptional initiation by the RNA polymerase II apparatus. The protein encoded by this gene is a subunit of the CRSP (cofactor required for SP1 activation) complex, which, along with TFIID, is required for efficient activation by SP1. This protein is also a component of other multisubunit complexes e.g. thyroid hormone receptor-(TR-) associated proteins which interact with TR and facilitate TR function on DNA templates in conjunction with initiation factors and cofactors. This protein contains a bipartite nuclear localization signal. This gene is known to escape chromosome X-inactivation. [provided by RefSeq, Jul 2008]

Full Name

Mediator Complex Subunit 14

Function

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.

Biological Process

Positive regulation of transcription, DNA-templated Source: UniProtKB
Positive regulation of transcription by RNA polymerase II Source: MGI
Positive regulation of transcription elongation from RNA polymerase II promoter Source: ComplexPortal
Positive regulation of transcription initiation from RNA polymerase II promoter Source: UniProtKB
Regulation of transcription by RNA polymerase II Source: GO_Central
RNA polymerase II preinitiation complex assembly Source: ComplexPortal
Stem cell population maintenance Source: Ensembl

Cellular Location

Nucleus