General Transcription Factor IIH, Polypeptide 5 (GTF2H5)

TTD; TFB5; TGF2H5; TTD-A; TTDA; C6orf175; DNA Repair Syndrome Trichothiodystrophy Group A; TFIIH basal transcription factor complex TTD-A subunit

SPN	S885
HGNC	21157
MGI	107227
PubMed	15220921
RGD	1560991
UniProt	Q6ZYL4
Wiki	GTF2H5

General Transcription Factor IIH,Polypeptide 5 is a subunit of transcription/repair factor TFIIH, which functions in gene transcription and DNA repair. This protein stimulates ERCC3/XPB ATPase activity to trigger DNA opening during DNA repair, and is implicated in regulating cellular levels of TFIIH. Mutations in this gene result in trichothiodystrophy, complementation group A.

This protein, called TFB5, is a core component of yeast general transcription and DNA repair factor IIH (TFIIH). Database screening identified a human homolog of 71 amino acids that shares 28% identity with the yeast protein. Giglia-Mari et al. (2004) cloned the human cDNA corresponding to the TFB5 gene from primary fibroblasts.

Reference

"A new, tenth subunit of TFIIH is responsible for the DNA repair syndrome trichothiodystrophy group A and stabilizes TFIIH."
Nat. Genet. 36:714-719(2004) [PubMed] [Europe PMC] [Abstract]

"The DNA sequence and analysis of human chromosome 6."
Nature 425:805-811(2003) [PubMed] [Europe PMC] [Abstract]

"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract]

"ATM and ATR substrate analysis reveals extensive protein networks responsive to DNA damage."
Science 316:1160-1166(2007) [PubMed] [Europe PMC] [Abstract]

"Crystal structure of the human TFIIH."
Submitted (FEB-2005) to the PDB data bank