Positive Cofactor 4 (PC4) ELISA Kit for Cavy

The protein encoded by this gene is a subunit of the multiprotein complexes PC2 and ARC/DRIP and may function as a transcriptional coactivator in RNA polymerase II transcription. This gene contains stretches of trinucleotide repeats and is located in the chromosome 22 region which is deleted in DiGeorge syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2014]

PCQAP: 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. Required for cholesterol-dependent gene regulation. Positively regulates the Nodal signaling pathway. Belongs to the Mediator complex subunit 15 family. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Transcription, coactivator/corepressor; Nuclear receptor co-regulator

Chromosomal Location of Human Ortholog: 22q11.2

Cellular Component: nucleoplasm; membrane; cytoplasm; Srb-mediator complex; nucleus

Molecular Function: protein binding

Biological Process: regulation of transcription from RNA polymerase II promoter; transcription initiation from RNA polymerase II promoter; stem cell maintenance; gene expression