GTF2H2

Last updated
GTF2H2
Protein GTF2H2 PDB 1z60.png
Available structures
PDB Ortholog search: PDBe RCSB
Identifiers
Aliases GTF2H2 , BTF2, BTF2P44, T-BTF2P44, TFIIH, p44, general transcription factor IIH subunit 2
External IDs OMIM: 601748 MGI: 1345669 HomoloGene: 1159 GeneCards: GTF2H2
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001515

NM_022011
NM_001360706

RefSeq (protein)

NP_071294
NP_001347635

Location (UCSC) Chr 5: 71.03 – 71.07 Mb Chr 13: 100.6 – 100.63 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

General transcription factor IIH subunit 2 is a protein that in humans is encoded by the GTF2H2 gene. [5] [6]

Contents

Function

This gene is part of a 500 kb inverted duplication on chromosome 5q13. This duplicated region contains at least four genes and repetitive elements which make it prone to rearrangements and deletions. The repetitiveness and complexity of the sequence have also caused difficulty in determining the organization of this genomic region. This gene is within the telomeric copy of the duplication. Deletion of this gene sometimes accompanies deletion of the neighboring SMN1 gene in spinal muscular atrophy (SMA) patients but it is unclear if deletion of this gene contributes to the SMA phenotype. This gene encodes the 44 kDa subunit of RNA polymerase II transcription initiation factor IIH which is involved in basal transcription and nucleotide excision repair. Transcript variants for this gene have been described, but their full length nature has not been determined. A second copy of this gene within the centromeric copy of the duplication has been described in the literature. It is reported to be different by either two or four base pairs; however, no sequence data is currently available for the centromeric copy of the gene. [6]

Interactions

GTF2H2 has been shown to interact with GTF2H5, [7] [8] XPB [7] [9] and ERCC2. [8] [10]

See also

Related Research Articles

<span class="mw-page-title-main">Nucleotide excision repair</span> DNA repair mechanism

Nucleotide excision repair is a DNA repair mechanism. DNA damage occurs constantly because of chemicals, radiation and other mutagens. Three excision repair pathways exist to repair single stranded DNA damage: Nucleotide excision repair (NER), base excision repair (BER), and DNA mismatch repair (MMR). While the BER pathway can recognize specific non-bulky lesions in DNA, it can correct only damaged bases that are removed by specific glycosylases. Similarly, the MMR pathway only targets mismatched Watson-Crick base pairs.

<span class="mw-page-title-main">XPB</span> Mammalian protein found in Homo sapiens

XPB is an ATP-dependent DNA helicase in humans that is a part of the TFIIH transcription factor complex.

<span class="mw-page-title-main">ERCC2</span> Mammalian protein found in humans

ERCC2, or XPD is a protein involved in transcription-coupled nucleotide excision repair.

Transcription factor II H (TFIIH) is an important protein complex, having roles in transcription of various protein-coding genes and DNA nucleotide excision repair (NER) pathways. TFIIH first came to light in 1989 when general transcription factor-δ or basic transcription factor 2 was characterized as an indispensable transcription factor in vitro. This factor was also isolated from yeast and finally named TFIIH in 1992.

<span class="mw-page-title-main">Eukaryotic transcription</span> Transcription is heterocatalytic function of DNA

Eukaryotic transcription is the elaborate process that eukaryotic cells use to copy genetic information stored in DNA into units of transportable complementary RNA replica. Gene transcription occurs in both eukaryotic and prokaryotic cells. Unlike prokaryotic RNA polymerase that initiates the transcription of all different types of RNA, RNA polymerase in eukaryotes comes in three variations, each translating a different type of gene. A eukaryotic cell has a nucleus that separates the processes of transcription and translation. Eukaryotic transcription occurs within the nucleus where DNA is packaged into nucleosomes and higher order chromatin structures. The complexity of the eukaryotic genome necessitates a great variety and complexity of gene expression control.

CDK7 is a cyclin-dependent kinase shown to be not easily classified. CDK7 is both a CDK-activating kinase (CAK) and a component of the general transcription factor TFIIH.

Transcription factor II E (TFIIE) is one of several general transcription factors that make up the RNA polymerase II preinitiation complex. It is a tetramer of two alpha and two beta chains and interacts with TAF6/TAFII80, ATF7IP, and varicella-zoster virus IE63 protein.

<span class="mw-page-title-main">Cyclin-dependent kinase 7</span> Protein-coding gene in the species Homo sapiens

Cyclin-dependent kinase 7, or cell division protein kinase 7, is an enzyme that in humans is encoded by the CDK7 gene.

<span class="mw-page-title-main">RNA polymerase II subunit B4</span> Protein-coding gene in the species Homo sapiens

DNA-directed RNA polymerase II subunit RPB4 is an enzyme that in humans is encoded by the POLR2D gene.

<span class="mw-page-title-main">MNAT1</span> Protein-coding gene in the species Homo sapiens

CDK-activating kinase assembly factor MAT1 is an enzyme that in humans is encoded by the MNAT1 gene.

<span class="mw-page-title-main">Cyclin H</span> Protein-coding gene in the species Homo sapiens

Cyclin-H is a protein that in humans is encoded by the CCNH gene.

<span class="mw-page-title-main">ERCC6</span> Gene of the species Homo sapiens

DNA excision repair protein ERCC-6 is a protein that in humans is encoded by the ERCC6 gene. The ERCC6 gene is located on the long arm of chromosome 10 at position 11.23.

<span class="mw-page-title-main">GTF2H4</span> Protein-coding gene in the species Homo sapiens

General transcription factor IIH subunit 4 is a protein that in humans is encoded by the GTF2H4 gene.

<span class="mw-page-title-main">BRF1 (gene)</span> Protein-coding gene in the species Homo sapiens

Transcription factor IIIB 90 kDa subunit is a protein that in humans is encoded by the BRF1 gene.

<span class="mw-page-title-main">ERCC8 (gene)</span> Protein-coding gene in humans

DNA excision repair protein ERCC-8 is a protein that in humans is encoded by the ERCC8 gene.

<span class="mw-page-title-main">GTF2H1</span> Protein-coding gene in the species Homo sapiens

General transcription factor IIH subunit 1 is a protein that in humans is encoded by the GTF2H1 gene.

<span class="mw-page-title-main">MMS19</span> Protein-coding gene in the species Homo sapiens

MMS19 nucleotide excision repair protein homolog is a protein that in humans is encoded by the MMS19 gene.

<span class="mw-page-title-main">GTF2H5</span> Protein-coding gene in the species Homo sapiens

General transcription factor IIH subunit 5 is a protein that in humans is encoded by the GTF2H5 gene.

RNA polymerase II holoenzyme is a form of eukaryotic RNA polymerase II that is recruited to the promoters of protein-coding genes in living cells. It consists of RNA polymerase II, a subset of general transcription factors, and regulatory proteins known as SRB proteins.

<span class="mw-page-title-main">Tbf5 protein domain</span> Protein domain

In molecular biology, this protein domain represents Tbf5 which stands for TTDA subunit of TFIIH basal transcription factor complex, and Rex1 a type of nucleotide excision repair (NER) proteins. Nucleotide excision repair is a major pathway for repairing UV light-induced DNA damage in most organisms. The function of this protein is to aid transcription.

References

  1. 1 2 3 ENSG00000276910, ENSG00000275045 GRCh38: Ensembl release 89: ENSG00000145736, ENSG00000276910, ENSG00000275045 - Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000021639 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Humbert S, van Vuuren H, Lutz Y, Hoeijmakers JH, Egly JM, Moncollin V (June 1994). "p44 and p34 subunits of the BTF2/TFIIH transcription factor have homologies with SSL1, a yeast protein involved in DNA repair". EMBO J. 13 (10): 2393–8. doi:10.1002/j.1460-2075.1994.tb06523.x. PMC   395104 . PMID   8194529.
  6. 1 2 "Entrez Gene: GTF2H2 general transcription factor IIH, polypeptide 2, 44kDa".
  7. 1 2 Giglia-Mari G, Coin F, Ranish JA, Hoogstraten D, Theil A, Wijgers N, Jaspers NG, Raams A, Argentini M, van der Spek PJ, Botta E, Stefanini M, Egly JM, Aebersold R, Hoeijmakers JH, Vermeulen W (July 2004). "A new, tenth subunit of TFIIH is responsible for the DNA repair syndrome trichothiodystrophy group A". Nat. Genet. 36 (7): 714–9. doi: 10.1038/ng1387 . PMID   15220921.
  8. 1 2 Vermeulen W, Bergmann E, Auriol J, Rademakers S, Frit P, Appeldoorn E, Hoeijmakers JH, Egly JM (November 2000). "Sublimiting concentration of TFIIH transcription/DNA repair factor causes TTD-A trichothiodystrophy disorder". Nat. Genet. 26 (3): 307–13. doi:10.1038/81603. PMID   11062469. S2CID   25233797.
  9. Marinoni JC, Roy R, Vermeulen W, Miniou P, Lutz Y, Weeda G, Seroz T, Gomez DM, Hoeijmakers JH, Egly JM (March 1997). "Cloning and characterization of p52, the fifth subunit of the core of the transcription/DNA repair factor TFIIH". EMBO J. 16 (5): 1093–102. doi:10.1093/emboj/16.5.1093. PMC   1169708 . PMID   9118947.
  10. Coin F, Marinoni JC, Rodolfo C, Fribourg S, Pedrini AM, Egly JM (October 1998). "Mutations in the XPD helicase gene result in XP and TTD phenotypes, preventing interaction between XPD and the p44 subunit of TFIIH". Nat. Genet. 20 (2): 184–8. doi:10.1038/2491. PMID   9771713. S2CID   28250605.

Further reading


This article incorporates text from the United States National Library of Medicine, which is in the public domain.