1H6J

The three-dimensional structure of capsule-specific CMP:2-keto-3-deoxy-manno-octonic acid synthetase from Escherichia coli


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.32 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.225 

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This is version 1.1 of the entry. See complete history


Literature

The Three-Dimensional Structure of Capsule-Specific Cmp:2-Keto-3-Deoxy-Manno-Octonic Acid Synthetase from Escherichia Coli

Jelakovic, S.Jann, K.Schulz, G.E.

(1996) FEBS Lett 391: 157

  • DOI: https://doi.org/10.1016/0014-5793(96)00724-7
  • Primary Citation of Related Structures:  
    1H6J

  • PubMed Abstract: 

    CMP-Kdo synthetases from Gram-negative bacteria activate Kdo for incorporation into lipo- and capsule-polysaccharides. Here we report the crystal structure of the capsule-specific synthetase from E. coli at 2.3 A resolution. The enzyme is a dimer of 2 x 245 amino acid residues assuming C2 symmetry. It contains a central predominantly parallel beta-sheet with surrounding helices. The chain fold is novel; it is remotely related to a double Rossmann fold. A large pocket at the carboxyl terminal ends of the central. beta-strands most likely accommodates the catalytic center. A putative phosphate binding site at the loop between the first beta-strand and the following helix is indicated by a bound iridium hexachloride anion.


  • Organizational Affiliation

    Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität, Freiburg im Breisgau, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
3-DEOXY-MANNO-OCTULOSONATE CYTIDYLYLTRANSFERASE
A, B
245Escherichia coliMutation(s): 0 
EC: 2.7.7.38
UniProt
Find proteins for P42216 (Escherichia coli)
Explore P42216 
Go to UniProtKB:  P42216
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP42216
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.32 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.225 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.09α = 90
b = 133.46β = 102.51
c = 48.33γ = 90
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-07-12
    Type: Initial release
  • Version 1.1: 2024-05-08
    Changes: Data collection, Database references