1FX3

CRYSTAL STRUCTURE OF H. INFLUENZAE SECB


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.301 
  • R-Value Work: 0.241 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the bacterial protein export chaperone secB.

Xu, Z.Knafels, J.D.Yoshino, K.

(2000) Nat.Struct.Mol.Biol. 7: 1172-1177

  • DOI: 10.1038/82040

  • PubMed Abstract: 
  • SecB is a bacterial molecular chaperone involved in mediating translocation of newly synthesized polypeptides across the cytoplasmic membrane of bacteria. The crystal structure of SecB from Haemophilus influenzae shows that the molecule is a tetramer ...

    SecB is a bacterial molecular chaperone involved in mediating translocation of newly synthesized polypeptides across the cytoplasmic membrane of bacteria. The crystal structure of SecB from Haemophilus influenzae shows that the molecule is a tetramer organized as a dimer of dimers. Two long channels run along the side of the molecule. These are bounded by flexible loops and lined with conserved hydrophobic amino acids, which define a suitable environment for binding non-native polypeptides. The structure also reveals an acidic region on the top surface of the molecule, several residues of which have been implicated in binding to SecA, its downstream target.


    Organizational Affiliation

    Department of Biological Chemistry, The University of Michigan Medical School, 1301 E. Catherine Road, Ann Arbor, Michigan 48109, USA. zhaohui@umich.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN-EXPORT PROTEIN SECB
A, B, C, D
169Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)Gene Names: secB
Find proteins for P44853 (Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd))
Go to UniProtKB:  P44853
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.301 
  • R-Value Work: 0.241 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 126.344α = 90.00
b = 126.344β = 90.00
c = 148.333γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-12-06
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance