ISDA

Entry Detail

PDB ID:

3WLU

Keywords:

SUGAR BINDING PROTEIN

Title:

Crystal Structure of human galectin-9 NCRD with Selenolactose

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2013-11-14

Release Date:

2014-11-05

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.40 Å

R-Value Free:

0.19

R-Value Work:

0.17

R-Value Observed:

0.17

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Galectin-9
Chain IDs:A, B, C, D
Chain Length:144
Number of Molecules:4
Biological Source:Homo sapiens

UniProt ID:O00182 Pfam ID:PF00337

Ligand Molecules

LSE

Primary Citation

Expanded potential of seleno-carbohydrates as a molecular tool for X-ray structural determination of a carbohydrate-protein complex with single/multi-wavelength anomalous dispersion phasing

Suzuki, T, Makyio, H, Ando, H, Komura, N, Menjo, M, Yamada, Y, Imamura, A, Ishida, H, Wakatsuki, S, Kato, R, Kiso, M.Show

Bioorg.Med.Chem. 22 2090 2101 (2014)

PMID: 24631362 DOI: 10.1016/j.bmc.2014.02.023

Abstact

Seleno-lactoses have been successfully synthesized as candidates for mimicking carbohydrate ligands for human galectin-9 N-terminal carbohydrate recognition domain (NCRD). Selenium was introduced into the mono- or di-saccharides using p-methylselenobenzoic anhydride (Tol2Se) as a novel selenating reagent. The TolSe-substituted monosaccharides were converted into selenoglycosyl donors or acceptors, which were reacted with coupling partners to afford seleno-lactoses. The seleno-lactoses were converted to the target compounds. The structure of human galectin-9 NCRD co-crystallized with 6-MeSe-lactose was determined with single/multi-wavelength anomalous dispersion (SAD/MAD) phasing and was similar to that of the co-crystal with natural lactose.

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Protein

Chemical

Disease

Primary Citation of related structures