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8Q3I

Mycobacterium smegmatis RNA polymerase in complex with HelD, SigA and RbpA in State I

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(A, B)
DNA-directed RNA polymerase subunit alphapolymer35037959.42UniProt (A0QSL8)
Pfam (PF01193)
Pfam (PF01000)
Pfam (PF03118)
Mycolicibacterium smegmatis MC2 155RNAP subunit alpha,RNA polymerase subunit alpha,Transcriptase subunit alpha
2C
(C)
DNA-directed RNA polymerase subunit betapolymer1169128680.11UniProt (P60281)
Pfam (PF04563)
Pfam (PF04561)
Pfam (PF04565)
Pfam (PF10385)
Pfam (PF00562)
Pfam (PF04560)
Mycolicibacterium smegmatis MC2 155RNAP subunit beta,RNA polymerase subunit beta,Transcriptase subunit beta
3D
(D)
DNA-directed RNA polymerase subunit beta'polymer1317146712.91UniProt (A0QS66)
Pfam (PF04997)
Pfam (PF00623)
Pfam (PF04983)
Pfam (PF05000)
Pfam (PF04998)
Mycolicibacterium smegmatis MC2 155RNAP subunit beta',RNA polymerase subunit beta',Transcriptase subunit beta'
4E
(E)
DNA-directed RNA polymerase subunit omegapolymer10711544.81UniProt (A0QWT1)
Pfam (PF01192)
Mycolicibacterium smegmatis MC2 155RNAP omega subunit,RNA polymerase omega subunit,Transcriptase subunit omega
5F
(F)
RNA polymerase sigma factor SigApolymer46651573.61UniProt (A0QW02)
Pfam (PF00140)
Pfam (PF04542)
Pfam (PF04539)
Pfam (PF04545)
Mycolicibacterium smegmatis MC2 155
6G
(H)
Helicasepolymer73681298.11UniProt (I7G5V9)
Pfam (PF00580)
UniProt (by SIFTS) (A0QUE0)
Mycolicibacterium smegmatis MC2 155
7H
(J)
RNA polymerase-binding protein RbpApolymer11413078.71UniProt (A0QZ11)
Pfam (PF13397)
Mycolicibacterium smegmatis MC2 155
8I, J
(D)
ZINC IONnon-polymer65.42Chemie (ZN)
9K
(D)
MAGNESIUM IONnon-polymer24.31Chemie (MG)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains8
Total formula weight508807.0
Non-Polymers*Number of molecules3
Total formula weight155.1
All*Total formula weight508962.2
*Water molecules are not included.

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PDB entries from 2026-01-14

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