5WS4

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.4 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.227 

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
  • Primary Citation of Related Structures:  

  • 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.,Institute for Protein Research, Osaka University, Suita, Osaka, 565-0871, Japan.,Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1PD, UK.,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: macB
EC: 7.6.2.-
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
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AT4
Query on AT4

Download SDF File 
Download CCD File 
A, B
5'-O-[(R)-HYDROXY(THIOPHOSPHONOOXY)PHOSPHORYL]ADENOSINE
ADENOSINE 5'-O-(2-THIODIPHOSPHATE)
C10 H15 N5 O9 P2 S
HCIKUKNAJRJFOW-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.4 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.227 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 229.652α = 90.00
b = 229.652β = 90.00
c = 154.584γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
HKL-2000data reduction
Omodel building
PHENIXrefinement
SCALEPACKdata scaling
Cootmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
MEXTJapan--
JSPSJapan--
JSTJapan--
NIBIOJapan--

Revision History 

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