Q13888: General transcription factor IIH subunit 2 (GTF2H2)

General transcription factor IIH subunit 2 (GTF2H2) is a 395-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q13888.

Gene
GTF2H2
Organism
Homo sapiens
Length
395 residues
Mean pLDDT
84.3
Model
AF-Q13888-F1 v6
Model created
1 Aug 2025
PDB structures
52

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Model confidence (pLDDT)

The mean pLDDT of this model is 84.3 (confident overall). pLDDT is AlphaFold's per-residue confidence score from 0 to 100. In MolViewer, choose the B-factor color scheme to color the model by pLDDT, because AlphaFold stores it in the B-factor column.

pLDDT bandMeaningShare of residues
Above 90Very high: backbone and side chains are usually accurate53%
70 to 90Confident: backbone generally right29%
50 to 70Low: treat with caution13%
Below 50Very low: often disordered regions5%

What pLDDT means and how to read it

Function

Component of the general transcription and DNA repair factor IIH (TFIIH) core complex, which is involved in general and transcription-coupled nucleotide excision repair (NER) of damaged DNA and, when complexed to CAK, in RNA transcription by RNA polymerase II. In NER, TFIIH acts by opening DNA around the lesion to allow the excision of the damaged oligonucleotide and its replacement by a new DNA fragment. In transcription, TFIIH has an essential role in transcription initiation. When the pre-initiation complex (PIC) has been established, TFIIH is required for promoter opening and promoter escape. Phosphorylation of the C-terminal tail (CTD) of the largest subunit of RNA polymerase II by…

Subunit structure

Component of the TFIID-containing RNA polymerase II pre-initiation complex that is composed of TBP and at least GTF2A1, GTF2A2, GTF2E1, GTF2E2, GTF2F1, GTF2H2, GTF2H3, GTF2H4, GTF2H5, GTF2B, TCEA1, ERCC2 and ERCC3 (PubMed:27193682). Component of the 7-subunit TFIIH core complex composed of XPB/ERCC3, XPD/ERCC2, GTF2H1, GTF2H2, GTF2H3, GTF2H4 and GTF2H5, which is active in NER. The core complex…

Subcellular location

Nucleus

Experimental structures in the PDB

Compare the prediction with experimentally determined structures of the same protein:

PDB IDMethodResolutionChains and residues
28JMEM3.29 ÅE=1-395
7EGBEM3.3 Å2=1-395
8EBUEM3.3 ÅE=1-395
9PD3EM3.3 ÅE=1-395
28JSEM3.32 ÅE=1-395
5O85X-ray3.4 ÅB/D=1-395
9PD4EM3.4 ÅE=1-395
6RO4EM3.5 ÅD=1-395
7AD8EM3.5 ÅD=1-395
9XYUEM3.5 ÅE=1-395
28KEEM3.6 ÅE=1-395
8EBXEM3.6 ÅE=1-395
8EBYEM3.6 ÅE=1-395
6NMIEM3.7 ÅE=51-387
7EGCEM3.9 Å2=1-395
7NVXEM3.9 Å6=1-395
8EBTEM3.9 ÅE=8-387
28JVEM3.91 ÅE=1-395
8BVWEM4.0 Å4=1-395
8EBSEM4.0 ÅE=1-395

Showing 20 of 52 experimental structures (best resolution first).

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