4R84

Crystal structure of Sialyltransferase from Photobacterium damsela with CMP-3F(a)Neu5Ac bound


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.173 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Crystal structures of sialyltransferase from Photobacterium damselae.

Huynh, N.Li, Y.Yu, H.Huang, S.Lau, K.Chen, X.Fisher, A.J.

(2014) FEBS Lett 588: 4720-4729

  • DOI: https://doi.org/10.1016/j.febslet.2014.11.003
  • Primary Citation of Related Structures:  
    4R83, 4R84, 4R9V

  • PubMed Abstract: 

    Sialyltransferase structures fall into either GT-A or GT-B glycosyltransferase fold. Some sialyltransferases from the Photobacterium genus have been shown to contain an additional N-terminal immunoglobulin (Ig)-like domain. Photobacterium damselae α2-6-sialyltransferase has been used efficiently in enzymatic and chemoenzymatic synthesis of α2-6-linked sialosides. Here we report three crystal structures of this enzyme. Two structures with and without a donor substrate analog CMP-3F(a)Neu5Ac contain an immunoglobulin (Ig)-like domain and adopt the GT-B sialyltransferase fold. The binary structure reveals a non-productive pre-Michaelis complex, which are caused by crystal lattice contacts that prevent the large conformational changes. The third structure lacks the Ig-domain. Comparison of the three structures reveals small inherent flexibility between the two Rossmann-like domains of the GT-B fold.


  • Organizational Affiliation

    Cell Biology Graduate Program, University of California, One Shields Avenue, Davis, CA 95616, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Sialyltransferase 0160
A, B, C, D
503Photobacterium damselaeMutation(s): 0 
Gene Names: bst
EC: 2.4.99.1
UniProt
Find proteins for O66375 (Photobacterium damselae)
Explore O66375 
Go to UniProtKB:  O66375
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO66375
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CSF
Query on CSF

Download Ideal Coordinates CCD File 
E [auth A],
G [auth B],
I [auth C],
K [auth D]
CYTIDINE-5'-MONOPHOSPHATE-3-FLUORO-N-ACETYL-NEURAMINIC ACID
C20 H30 F N4 O16 P
HNJLGUNKGJTPBF-JTKQZVQZSA-N
CA
Query on CA

Download Ideal Coordinates CCD File 
F [auth A],
H [auth B],
J [auth C],
L [auth D]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.173 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.34α = 99.02
b = 81.45β = 91.59
c = 111.21γ = 101.2
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-03
    Type: Initial release
  • Version 1.1: 2014-12-17
    Changes: Database references
  • Version 1.2: 2015-01-14
    Changes: Database references
  • Version 1.3: 2023-09-20
    Changes: Data collection, Database references, Derived calculations, Refinement description