2N7S image
Entry Detail
PDB ID:
2N7S
Title:
Solution Structure of Leptospiral LigA4 Big Domain
Biological Source:
PDB Version:
Deposition Date:
2015-09-17
Release Date:
2015-10-21
Method Details:
Experimental Method:
Conformers Calculated:
1799
Conformers Submitted:
20
Selection Criteria:
target function
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Ig-like repeat domain protein 1
Chain IDs:A
Chain Length:92
Number of Molecules:1
Biological Source:Leptospira interrogans serovar Copenhageni str. Fiocruz L1-130
Ligand Molecules
Primary Citation
Solution structure of leptospiral LigA4 Big domain.
Biochem. Biophys. Res. Commun. 467 288 292 (2015)
PMID: 26449456 DOI: 10.1016/j.bbrc.2015.09.170

Abstact

Pathogenic Leptospiraspecies express immunoglobulin-like proteins which serve as adhesins to bind to the extracellular matrices of host cells. Leptospiral immunoglobulin-like protein A (LigA), a surface exposed protein containing tandem repeats of bacterial immunoglobulin-like (Big) domains, has been proved to be involved in the interaction of pathogenic Leptospira with mammalian host. In this study, the solution structure of the fourth Big domain of LigA (LigA4 Big domain) from Leptospira interrogans was solved by nuclear magnetic resonance (NMR). The structure of LigA4 Big domain displays a similar bacterial immunoglobulin-like fold compared with other Big domains, implying some common structural aspects of Big domain family. On the other hand, it displays some structural characteristics significantly different from classic Ig-like domain. Furthermore, Stains-all assay and NMR chemical shift perturbation revealed the Ca(2+) binding property of LigA4 Big domain.

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