5GKO

Crystal structure of tripartite-type ABC transporter, MacB from Acinetobacter baumannii


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.39 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Crystal structure of tripartite-type ABC transporter MacB from Acinetobacter baumannii.

Okada, U.Yamashita, E.Neuberger, A.Morimoto, M.van Veen, H.W.Murakami, S.

(2017) Nat Commun 8: 1336-1336

  • DOI: 10.1038/s41467-017-01399-2
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The MacA-MacB-TolC tripartite complex is a transmembrane machine that spans both plasma membrane and outer membrane and actively extrudes substrates, including macrolide antibiotics, virulence factors, peptides and cell envelope precursors. These tra ...

    The MacA-MacB-TolC tripartite complex is a transmembrane machine that spans both plasma membrane and outer membrane and actively extrudes substrates, including macrolide antibiotics, virulence factors, peptides and cell envelope precursors. These transport activities are driven by the ATPase MacB, a member of the ATP-binding cassette (ABC) superfamily. Here, we present the crystal structure of MacB at 3.4-Å resolution. MacB forms a dimer in which each protomer contains a nucleotide-binding domain and four transmembrane helices that protrude in the periplasm into a binding domain for interaction with the membrane fusion protein MacA. MacB represents an ABC transporter in pathogenic microorganisms with unique structural features.


    Organizational Affiliation

    Department of Life Science, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama, 226-8501, Japan. murakami@bio.titech.ac.jp.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Macrolide export ATP-binding/permease protein MacB
A, B
671Acinetobacter baumanniiMutation(s): 0 
Gene Names: 
EC: 3.6.3 (PDB Primary Data), 7.6.2 (UniProt)
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
ATP Binding Cassette (ABC) Transporters
Protein: 
MacB ABC transporter
Find proteins for A0A0D8G707 (Acinetobacter baumannii)
Go to UniProtKB:  A0A0D8G707
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.39 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.224 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 229.148α = 90
b = 229.148β = 90
c = 155.644γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
JSPSJapanLS045

Revision History 

  • Version 1.0: 2017-11-15
    Type: Initial release
  • Version 1.1: 2020-01-01
    Changes: Database references