ISDA

Deposition Date 2005-04-12

Release Date 2006-02-22

Last Version Date 2023-12-13

Entry Detail

PDB ID:

2BOJ

Keywords:

LECTIN

Title:

crystal Structure of pseudomonas aeruginosa lectin (PA-IIL) complexed with methyl-B-D-Arabinopyranoside

Biological Source:

Source Organism:

PSEUDOMONAS AERUGINOSA (Taxon ID: 208964)

Host Organism:

ESCHERICHIA COLI

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.80 Å

R-Value Free:

0.17

R-Value Work:

0.13

R-Value Observed:

0.13

Space Group:

P 1 21 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:PSEUDOMONAS AERUGINOSA LECTIN II
Gene (Uniprot):lecB
Chain IDs:A, B, C, D
Chain Length:114
Number of Molecules:4
Biological Source:PSEUDOMONAS AERUGINOSA

UniProt ID:Q9HYN5 Pfam ID:PF07472

Ligand Molecules

ARW

SO4

Primary Citation

Binding of Different Monosaccharides by Lectin Pa-Iil from Pseudoman Aeruginosa: Thermodynamics Data Correlated with X-Ray Structures.

Sabin, C.D, Mitchell, E.P, Pokarna, M, Gautier, C, Utille, J.-P, Wimmerova, M, Imberty, A, Mitchell, E, Sabin, C.D, Snajdrova, L, Pokorna, M, Perret, S, Gautier, C, Hofr, C, Gilboa-Garber, N, Koca, J, Wimmerova, M, Imberty, A.Show

FEBS Lett. 580 982 ? (2006)

PMID: 16438968 DOI: 10.1016/J.FEBSLET.2006.01.030

Abstact

The lectin from Pseudomonas aeruginosa (PA-IIL) is involved in host recognition and biofilm formation. Lectin not only displays an unusually high affinity for fucose but also binds to L-fucose, L-galactose and D-arabinose that differ only by the group at position 5 of the sugar ring. Isothermal calorimetry experiments provided precise determination of affinity for the three methyl-glycosides and revealed a large enthalpy contribution. The crystal structures of the complexes of PA-IIL with L-galactose and Met-beta-D-arabinoside have been determined and compared with the PA-IIL/fucose complex described previously. A combination of the structures and thermodynamics provided clues for the role of the hydrophobic group in affinity.

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Primary Citation of related structures