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7MKO

Escherichia coli RNA polymerase elongation complex

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(A, B)
DNA-directed RNA polymerase subunit alphapolymer23726213.82UniProt (A0A4S5AL01)
Pfam (PF01193)
Pfam (PF01000)
UniProt (by SIFTS) (P0A7Z4)
Escherichia coli (strain K12)RNAP subunit alpha,RNA polymerase subunit alpha,Transcriptase subunit alpha
2C
(C)
DNA-directed RNA polymerase subunit betapolymer1340150590.51UniProt (A0A4S4NK82)
Pfam (PF04563)
Pfam (PF04561)
Pfam (PF04565)
Pfam (PF10385)
Pfam (PF00562)
Pfam (PF04560)
UniProt (by SIFTS) (P0A8V2)
Escherichia coli (strain K12)RNAP subunit beta,RNA polymerase subunit beta,Transcriptase subunit beta
3D
(D)
DNA-directed RNA polymerase subunit beta'polymer1363150865.81UniProt (A0A6D2WUT6)
Pfam (PF04997)
Pfam (PF00623)
Pfam (PF04983)
Pfam (PF05000)
Pfam (PF04998)
UniProt (by SIFTS) (P0A8T7)
Escherichia coli (strain K12)RNAP subunit beta',RNA polymerase subunit beta',Transcriptase subunit beta'
4E
(E)
DNA-directed RNA polymerase subunit omegapolymer9110249.51UniProt (P0A800)
Pfam (PF01192)
Escherichia coli (strain K12)RNAP omega subunit,RNA polymerase omega subunit,Transcriptase subunit omega
5F
(N)
DNA (29-MER)polymer298840.71Escherichia coli K-12
6G
(R)
RNA (20-MER)polymer113625.21Escherichia coli K-12
7H
(T)
DNA (29-MER)polymer298813.61Escherichia coli K-12
8I
(D)
MAGNESIUM IONnon-polymer24.31Chemie (MG)
9J, K
(D)
ZINC IONnon-polymer65.42Chemie (ZN)
10L
(D)
5'-O-[(S)-hydroxy{[(S)-hydroxy(phosphonooxy)phosphoryl]methyl}phosphoryl]cytidinenon-polymer481.21Chemie (2TM)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains8
Total formula weight385413.1
Non-Polymers*Number of molecules4
Total formula weight636.3
All*Total formula weight386049.4
*Water molecules are not included.

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PDB entries from 2025-06-11

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