7BEF

Structures of class II bacterial transcription complexes


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


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Literature

Structures of Class I and Class II Transcription Complexes Reveal the Molecular Basis of RamA-Dependent Transcription Activation.

Hao, M.Ye, F.Jovanovic, M.Kotta-Loizou, I.Xu, Q.Qin, X.Buck, M.Zhang, X.Wang, M.

(2022) Adv Sci (Weinh) 9: e2103669-e2103669

  • DOI: 10.1002/advs.202103669
  • Primary Citation of Related Structures:  
    7BEF, 7BEG

  • PubMed Abstract: 
  • Transcription activator RamA is linked to multidrug resistance of Klebsiella pneumoniae through controlling genes that encode efflux pumps (acrA) and porin-regulating antisense RNA (micF). In bacteria, σ 70 , together with activators, controls the majority of genes by recruiting RNA polymerase (RNAP) to the promoter regions ...

    Transcription activator RamA is linked to multidrug resistance of Klebsiella pneumoniae through controlling genes that encode efflux pumps (acrA) and porin-regulating antisense RNA (micF). In bacteria, σ 70 , together with activators, controls the majority of genes by recruiting RNA polymerase (RNAP) to the promoter regions. RNAP and σ 70 form a holoenzyme that recognizes -35 and -10 promoter DNA consensus sites. Many activators bind upstream from the holoenzyme and can be broadly divided into two classes. RamA acts as a class I activator on acrA and class II activator on micF, respectively. The authors present biochemical and structural data on RamA in complex with RNAP-σ 70 at the two promoters and the data reveal the molecular basis for how RamA assembles and interacts with core RNAP and activates transcription that contributes to antibiotic resistance. Further, comparing with CAP/TAP complexes reveals common and activator-specific features in activator binding and uncovers distinct roles of the two C-terminal domains of RNAP α subunit.


    Organizational Affiliation

    Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission of the People's Republic of China, Shanghai, 200040, China.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit alphaA, B329Escherichia coli K-12Mutation(s): 0 
Gene Names: rpoApezphssezb3295JW3257
EC: 2.7.7.6
UniProt
Find proteins for P0A7Z4 (Escherichia coli (strain K12))
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UniProt GroupP0A7Z4
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit betaC1,342Escherichia coli K-12Mutation(s): 0 
Gene Names: rpoBgroNnitBrifronstlstvtabDb3987JW3950
EC: 2.7.7.6
UniProt
Find proteins for P0A8V2 (Escherichia coli (strain K12))
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UniProt GroupP0A8V2
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit beta'D1,407Escherichia coli K-12Mutation(s): 0 
Gene Names: rpoCtabBb3988JW3951
EC: 2.7.7.6
UniProt
Find proteins for P0A8T7 (Escherichia coli (strain K12))
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UniProt GroupP0A8T7
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit omegaE91Escherichia coli K-12Mutation(s): 0 
Gene Names: rpoZb3649JW3624
EC: 2.7.7.6
UniProt
Find proteins for P0A800 (Escherichia coli (strain K12))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
RNA polymerase sigma factor RpoDF630Escherichia coli K-12Mutation(s): 0 
Gene Names: rpoDaltb3067JW3039
UniProt
Find proteins for P00579 (Escherichia coli (strain K12))
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UniProt GroupP00579
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Transcriptional activator RamAG130Klebsiella pneumoniaeMutation(s): 0 
Gene Names: ramA
UniProt
Find proteins for Q48413 (Klebsiella pneumoniae)
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Entity ID: 7
MoleculeChainsLengthOrganismImage
pmicF promoter template DNAH [auth T]73Klebsiella pneumoniae
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Entity ID: 8
MoleculeChainsLengthOrganismImage
pmicF promoter non-template DNAI [auth N]73Klebsiella pneumoniae
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research Council (BBSRC)United KingdomBB/N007816/1
Medical Research Council (MRC, United Kingdom)United KingdomMR/P007503/1
National Science Foundation (NSF, China)China81991531

Revision History  (Full details and data files)

  • Version 1.0: 2021-12-01
    Type: Initial release
  • Version 1.1: 2022-02-16
    Changes: Database references