4Q7M

Structure of NBD288-Avi of TM287/288


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A Transporter Motor Taken Apart: Flexibility in the Nucleotide Binding Domains of a Heterodimeric ABC Exporter.

Bukowska, M.A.Hohl, M.Geertsma, E.R.Hurlimann, L.M.Grutter, M.G.Seeger, M.A.

(2015) Biochemistry 54: 3086-3099

  • DOI: 10.1021/acs.biochem.5b00188
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • ABC exporters are ubiquitous multidomain transport proteins that couple ATP hydrolysis at a pair of nucleotide binding domains to substrate transport across the lipid bilayer mediated by two transmembrane domains. Recently, the crystal structure of t ...

    ABC exporters are ubiquitous multidomain transport proteins that couple ATP hydrolysis at a pair of nucleotide binding domains to substrate transport across the lipid bilayer mediated by two transmembrane domains. Recently, the crystal structure of the heterodimeric ABC exporter TM287/288 was determined. One of its asymmetric ATP binding sites is called the degenerate site; it binds nucleotides tightly but is impaired in terms of ATP hydrolysis. Here we report the crystal structures of both isolated motor domains of TM287/288. Unexpectedly, structural elements constituting the degenerate ATP binding site are disordered in these crystals and become structured only in the context of the full-length transporter. In addition, hydrogen bonding patterns of key residues, including those of the catalytically important Walker B and the switch loop motifs, are fundamentally different in the solitary NBDs compared to those in the intact transport protein. The structures reveal crucial interdomain contacts that need to be established for the proper assembly of the functional transporter complex.


    Organizational Affiliation

    ‡Institute of Medical Microbiology, University of Zurich, Gloriastrasse 30/32, 8006 Zurich, Switzerland.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Uncharacterized ABC transporter ATP-binding protein TM_0288
B
271Thermotoga maritima MSB8Mutation(s): 0 
Gene Names: TM_0288
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
ATP Binding Cassette (ABC) Transporters
Protein: 
Heterodimeric ABC exporter TM287-TM288, NBD287 domain
Find proteins for Q9WYC4 (Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099))
Go to UniProtKB:  Q9WYC4
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.3α = 90
b = 58.3β = 90
c = 208.69γ = 120
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-05-20
    Type: Initial release
  • Version 1.1: 2015-06-03
    Changes: Database references
  • Version 1.2: 2017-11-22
    Changes: Refinement description