Crystal structure of the fucose mutarotase in complex with L-fucose from Streptococcus pneumoniae

Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.228 

wwPDB Validation   3D Report Full Report

Ligand Structure Quality Assessment 

This is version 1.4 of the entry. See complete history


Structure of the Fucose Mutarotase from Streptococcus Pneumoniae in Complex with L-Fucose

Higgins, M.A.Boraston, A.B.

(2011) Acta Crystallogr Sect F Struct Biol Cryst Commun 67: 1524

  • DOI: https://doi.org/10.1107/S1744309111046343
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Streptococcus pneumoniae relies on a variety of carbohydrate-utilization pathways for both colonization of its human host and full virulence during the development of invasive disease. One such pathway is the fucose-utilization pathway, a component of which is fucose mutarotase (SpFcsU), an enzyme that performs the interconversion between α-L-fucose and β-L-fucose. This protein was crystallized and its three-dimensional structure was solved in complex with L-fucose. The structure shows a complex decameric quaternary structure with a high overall degree of structural identity to Escherichia coli FcsU (EcFcsU). Furthermore, the active-site architecture of SpFcsU is highly similar to that of EcFcsU. When considered in the context of the fucose-utilization pathway found in S. pneumoniae, SpFcsU appears to link the two halves of the pathway by enhancing the rate of conversion of the product of the final glycoside hydrolysis step, β-fucose, into the substrate for the fucose isomerase, α-fucose.

  • Organizational Affiliation

    Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D, E
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T
147Streptococcus pneumoniae TIGR4Mutation(s): 0 
Find proteins for A0A0H2ZNZ5 (Streptococcus pneumoniae serotype 2 (strain D39 / NCTC 7466))
Explore A0A0H2ZNZ5 
Go to UniProtKB:  A0A0H2ZNZ5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0H2ZNZ5
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on FUL

Download Ideal Coordinates CCD File 
BA [auth E]
DA [auth F]
EA [auth G]
FA [auth H]
GA [auth I]
BA [auth E],
DA [auth F],
EA [auth G],
FA [auth H],
GA [auth I],
HA [auth J],
JA [auth K],
LA [auth L],
NA [auth M],
OA [auth N],
QA [auth O],
RA [auth P],
SA [auth Q],
U [auth A],
UA [auth R],
V [auth B],
VA [auth S],
X [auth C],
XA [auth T],
Z [auth D]
C6 H12 O5
Query on K

Download Ideal Coordinates CCD File 
AA [auth D]
CA [auth E]
IA [auth J]
KA [auth K]
MA [auth L]
AA [auth D],
CA [auth E],
IA [auth J],
KA [auth K],
MA [auth L],
PA [auth N],
TA [auth Q],
W [auth B],
WA [auth S],
Y [auth C]
Experimental Data & Validation

Experimental Data

  • Resolution: 2.50 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.228 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.319α = 90
b = 144.158β = 97.51
c = 165.46γ = 90
Software Package:
Software NamePurpose

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-10-12
    Type: Initial release
  • Version 1.1: 2011-12-14
    Changes: Database references
  • Version 1.2: 2012-03-28
    Changes: Other
  • Version 1.3: 2013-09-04
    Changes: Atomic model, Derived calculations
  • Version 1.4: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Other, Structure summary