3AJ1

The structure of AxCeSD octamer (N-terminal HIS-tag) from Acetobacter xylinum


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.203 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of bacterial cellulose synthase subunit D octamer with four inner passageways

Hu, S.Q.Gao, Y.G.Tajima, K.Sunagawa, N.Zhou, Y.Kawano, S.Fujiwara, T.Yoda, T.Shimura, D.Satoh, Y.Munekata, M.Tanaka, I.Yao, M.

(2010) Proc.Natl.Acad.Sci.USA 107: 17957-17961

  • DOI: 10.1073/pnas.1000601107
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The cellulose synthesizing terminal complex consisting of subunits A, B, C, and D in Acetobacter xylinum spans the outer and inner cell membranes to synthesize and extrude glucan chains, which are assembled into subelementary fibrils and further into ...

    The cellulose synthesizing terminal complex consisting of subunits A, B, C, and D in Acetobacter xylinum spans the outer and inner cell membranes to synthesize and extrude glucan chains, which are assembled into subelementary fibrils and further into a ribbon. We determined the structures of subunit D (AxCeSD/AxBcsD) with both N- and C-terminal His(6) tags, and in complex with cellopentaose. The structure of AxCeSD shows an exquisite cylinder shape (height: ∼65 Å, outer diameter: ∼90 Å, and inner diameter: ∼25 Å) with a right-hand twisted dimer interface on the cylinder wall, formed by octamer as a functional unit. All N termini of the octamer are positioned inside the AxCeSD cylinder and create four passageways. The location of cellopentaoses in the complex structure suggests that four glucan chains are extruded individually through their own passageway along the dimer interface in a twisted manner. The complex structure also shows that the N-terminal loop, especially residue Lys6, seems to be important for cellulose production, as confirmed by in vivo assay using mutant cells with axcesD gene disruption and N-terminus truncation. Taking all results together, a model of the bacterial terminal complex is discussed.


    Related Citations: 
    • Purification, crystallization and preliminary X-ray studies of AxCesD required for efficient cellulose biosynthesis in Acetobacter xylinum
      Yao, M.,Hu, S.Q.,Gao, Y.G.,Tajima, K.,Yoda, T.,Shimura, D.,Satoh, Y.,Kawano, S.,Tanaka, I.,Munekata, M.
      (2008) Protein Pept.Lett. 15: 115


    Organizational Affiliation

    Faculty of Advanced Life Science, Hokkaido University, Sapporo 060-0810, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cellulose synthase operon protein D
A, B, C, D, E, F, G, H
167Komagataeibacter xylinusMutation(s): 0 
Gene Names: acsD
Find proteins for P37719 (Komagataeibacter xylinus)
Go to UniProtKB:  P37719
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E, F, G, H
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.203 
  • Space Group: P 32
Unit Cell:
Length (Å)Angle (°)
a = 77.700α = 90.00
b = 77.700β = 90.00
c = 213.924γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
SOLVEphasing
HKL-2000data scaling
HKL-2000data collection
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-10-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance