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6NMI

Cryo-EM structure of the human TFIIH core complex

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
General transcription and DNA repair factor IIH helicase subunit XPBpolymer65374233.51Pfam (PF13625)
Pfam (PF04851)
Pfam (PF16203)
UniProt (by SIFTS) (P19447)
Homo sapiens (Human)
2B
(B)
General transcription and DNA repair factor IIH helicase subunit XPDpolymer76086417.81Pfam (PF06733)
Pfam (PF06777)
Pfam (PF13307)
UniProt (by SIFTS) (P18074)
Homo sapiens (Human)
3C
(C)
General transcription factor IIH subunit 1, p62polymer54857789.01Pfam (PF08567)
Pfam (PF03909)
UniProt (by SIFTS) (P32780)
Homo sapiens (Human)
4D
(D)
General transcription factor IIH subunit 4, p52polymer46252245.21UniProt (Q92759)
Pfam (PF18307)
Pfam (PF03849)
Homo sapiens (Human)Basic transcription factor 2 52 kDa subunit, BTF2 p52, General transcription factor IIH polypeptide 4, TFIIH basal transcription factor complex p52 subunit
5E
(E)
General transcription factor IIH subunit 2, p44polymer36639609.11Pfam (PF04056)
Pfam (PF07975)
UniProt (by SIFTS) (Q13888)
Homo sapiens (Human)
6F
(F)
General transcription factor IIH subunit 3, p34polymer30834416.01UniProt (Q13889)
Pfam (PF03850)
Homo sapiens (Human)p34, BASIC TRANSCRIPTION FACTOR 2 34 KDA SUBUNIT, BTF2 P34, GENERAL TRANSCRIPTION FACTOR IIH POLYPEPTIDE 3, TFIIH BASAL TRANSCRIPTION FACTOR COMPLEX P34 SUBUNIT
7G
(G)
General transcription factor IIH subunit 5, p8polymer718060.41UniProt (Q6ZYL4)
Pfam (PF06331)
Homo sapiens (Human)General transcription factor IIH polypeptide 5, TFB5 ortholog, TFIIH basal transcription factor complex TTD-A subunit
8H
(H)
CDK-activating kinase assembly factor MAT1polymer30935874.01UniProt (P51948)
Pfam (PF17121)
Pfam (PF06391)
Homo sapiens (Human)CDK7/cyclin-H assembly factor,Cyclin-G1-interacting protein,Menage a trois,RING finger protein 66,RING finger protein MAT1,p35,p36
9I
(B)
IRON/SULFUR CLUSTERnon-polymer351.61Chemie (SF4)
10J, K, L, M, N...
(E, F, H)
ZINC IONnon-polymer65.46Chemie (ZN)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains8
Total formula weight388644.8
Non-Polymers*Number of molecules7
Total formula weight744.1
All*Total formula weight389388.9
*Water molecules are not included.

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PDB entries from 2025-06-11

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