MED26 mediator complex subunit 26 [Homo sapiens (human)] - Gene

Summary

Official Symbol: MED26provided by HGNC
Official Full Name: mediator complex subunit 26provided by HGNC
Primary source: HGNC:HGNC:2376
See related: Ensembl:ENSG00000105085 MIM:605043; AllianceGenome:HGNC:2376
Gene type: protein coding
RefSeq status: VALIDATED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: CRSP7; CRSP70
Summary: 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. [provided by RefSeq, Jul 2008]
Expression: Broad expression in testis (RPKM 18.2), bone marrow (RPKM 6.2) and 23 other tissues See more
Orthologs: mouse all
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Genomic context

Location:: 19p13.11

Exon count:: 3

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	19	NC_000019.10 (16574919..16628204, complement)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	19	NC_060943.1 (16709708..16762995, complement)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	19	NC_000019.9 (16685730..16739015, complement)

Chromosome 19 - NC_000019.10 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

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See details

Project title: HPA RNA-seq normal tissues
Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
BioProject: PRJEB4337
Publication: PMID 24309898
Analysis date: Wed Apr 4 07:08:55 2018

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

EAF1 (239-268) and TAF7 (205-235) peptide interactions were both mapped to the same groove formed by H3 and H4 helices of MED26 N-terminal domain.
Title: Solution Structure of the N-Terminal Domain of Mediator Subunit MED26 and Molecular Characterization of Its Interaction with EAF1 and TAF7.
the MED26-NTD functions as a molecular switch in the exchange of TBP-associated factor 7 (TAF7) for LEC to facilitate the transition from initiation to elongation during transcription of a subset of snRNA genes
Title: MED26 regulates the transcription of snRNA genes through the recruitment of little elongation complex.
MED26 can function as a molecular switch that interacts first with TFIID in the Pol II initiation complex and then exchanges TFIID for complexes containing ELL/EAF and P-TEFb to facilitate transition of Pol II into the elongation stage of transcription.
Title: Human mediator subunit MED26 functions as a docking site for transcription elongation factors.
findings identify MED19/MED26 as a probable composite REST interface in Mediator and further clarify the mechanistic basis by which Mediator facilitates REST-imposed epigenetic restrictions on neuronal gene expression
Title: MED19 and MED26 are synergistic functional targets of the RE1 silencing transcription factor in epigenetic silencing of neuronal gene expression.
Human CRSP interacts with RNA polymerase II CTD and adopts a specific CTD-bound conformation
Title: Human CRSP interacts with RNA polymerase II CTD and adopts a specific CTD-bound conformation.

Submit: New GeneRIF Correction

Phenotypes

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Review eQTL and phenotype association data in this region using PheGenI

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

HIV-1 interactions

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Replication interactions

Interaction	Pubs
Knockdown of mediator complex subunit 26 (MED26) by siRNA inhibits HIV-1 replication in HeLa P4/R5 cells	PubMed

Protein interactions

Protein	Gene	Interaction	Pubs
Tat	tat	Knockdown of MED26 by siRNAs inhibits HIV LTR-beta-gal activation in the Tat transactivation assay	PubMed

Go to the HIV-1, Human Interaction Database

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

CRSP7_3508 (e-PCR)
- UniSTS:462126

RH101914 (e-PCR)
- UniSTS:96249

Potential readthrough

Included genes: CHERP, SLC35E1, CALR3

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables transcription coactivator activity	TAS Traceable Author Statement more info	PubMed
enables transcription coregulator activity	IBA Inferred from Biological aspect of Ancestor more info
enables transcription coregulator activity	IDA Inferred from Direct Assay more info	PubMed

Process	Evidence Code	Pubs
involved_in RNA polymerase II preinitiation complex assembly	NAS Non-traceable Author Statement more info	PubMed
involved_in positive regulation of gene expression	IBA Inferred from Biological aspect of Ancestor more info
involved_in positive regulation of transcription elongation by RNA polymerase II	NAS Non-traceable Author Statement more info	PubMed
involved_in positive regulation of transcription initiation by RNA polymerase II	NAS Non-traceable Author Statement more info	PubMed
involved_in regulation of transcription by RNA polymerase II	IBA Inferred from Biological aspect of Ancestor more info
involved_in regulation of transcription by RNA polymerase II	IDA Inferred from Direct Assay more info	PubMed
involved_in transcription initiation at RNA polymerase II promoter	TAS Traceable Author Statement more info	PubMed

Component	Evidence Code	Pubs
part_of core mediator complex	IBA Inferred from Biological aspect of Ancestor more info
part_of core mediator complex	IPI Inferred from Physical Interaction more info	PubMed
part_of mediator complex	IBA Inferred from Biological aspect of Ancestor more info
part_of mediator complex	IDA Inferred from Direct Assay more info	PubMed
located_in nucleoplasm	TAS Traceable Author Statement more info
located_in nucleus	IDA Inferred from Direct Assay more info	PubMed

General protein information

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Preferred Names: mediator of RNA polymerase II transcription subunit 26

Names: ARC70; CRSP complex subunit 7; activator-recruited cofactor 70 kDa component; cofactor required for Sp1 transcriptional activation subunit 7; cofactor required for Sp1 transcriptional activation, subunit 7 (70kD); cofactor required for Sp1 transcriptional activation, subunit 7, 70kDa; transcriptional coactivator CRSP70

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

NM_004831.5 → NP_004822.2 mediator of RNA polymerase II transcription subunit 26

See identical proteins and their annotated locations for NP_004822.2

Status: VALIDATED

Source sequence(s)

AC008764, AC024075, AF104253, AK128435

Consensus CDS

CCDS12347.1

UniProtKB/Swiss-Prot

A1A4S3, O95402, Q0VGB6

UniProtKB/TrEMBL

B2R9G9

Related

ENSP00000263390.3, ENST00000263390.8

Conserved Domains (3) summary

smart00509
Location:12 → 86

TFS2N; Domain in the N-terminus of transcription elongation factor S-II (and elsewhere)

pfam15693
Location:419 → 598

Med26_C; Mediator complex subunit 26 C-terminal

pfam15694
Location:177 → 417

Med26_M; Mediator complex subunit 26 middle domain