2WQ4 image
Entry Detail
PDB ID:
2WQ4
Title:
N-terminal domain of BC2L-C Lectin from Burkholderia cenocepacia
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2009-08-13
Release Date:
2010-01-12
Method Details:
Experimental Method:
Resolution:
1.42 Å
R-Value Free:
0.16
R-Value Work:
0.13
R-Value Observed:
0.13
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:LECTIN
Chain IDs:A, B, C
Chain Length:156
Number of Molecules:3
Biological Source:BURKHOLDERIA CENOCEPACIA
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MSE A MET SELENOMETHIONINE
Primary Citation
A Tnf-Like Trimeric Lectin Domain from Burkholderia Cenocepacia with Specificity for Fucosylated Human Histo-Blood Group Antigens
Structure 18 59 ? (2010)
PMID: 20152153 DOI: 10.1016/J.STR.2009.10.021

Abstact

The opportunistic pathogen Burkholderia cenocepacia expresses several soluble lectins, among them BC2L-C. This lectin exhibits two domains: a C-terminal domain with high sequence similarity to the recently described calcium-dependent mannose-binding lectin BC2L-A, and an N-terminal domain of 156 amino acids without similarity to any known protein. The recombinant N-terminal BC2L-C domain is a new lectin with specificity for fucosylated human histo-blood group epitopes H-type 1, Lewis b, and Lewis Y, as determined by glycan array and isothermal titration calorimetry. Methylselenofucoside was used as ligand to solve the crystal structure of the N-terminal BC2L-C domain. Additional molecular modeling studies rationalized the preference for Lewis epitopes. The structure reveals a trimeric jellyroll arrangement with striking similarity to TNF-like proteins, and to BclA, the spore protein from Bacillus anthracis which may play an important role in bioadhesion of anthrax spores in human lungs.

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Primary Citation of related structures