1wnt
From Proteopedia
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|PDB= 1wnt |SIZE=350|CAPTION= <scene name='initialview01'>1wnt</scene>, resolution 2.30Å | |PDB= 1wnt |SIZE=350|CAPTION= <scene name='initialview01'>1wnt</scene>, resolution 2.30Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=NAP:NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE'>NAP</scene> | + | |LIGAND= <scene name='pdbligand=NAP:NADP+NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NAP</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/L-xylulose_reductase L-xylulose reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.1.10 1.1.1.10] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/L-xylulose_reductase L-xylulose reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.1.10 1.1.1.10] </span> |
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1pr9|1PR9]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1wnt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1wnt OCA], [http://www.ebi.ac.uk/pdbsum/1wnt PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1wnt RCSB]</span> | ||
}} | }} | ||
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[[Category: Hara, A.]] | [[Category: Hara, A.]] | ||
[[Category: Ishikura, S.]] | [[Category: Ishikura, S.]] | ||
| - | [[Category: NAP]] | ||
[[Category: 6 alpha helice]] | [[Category: 6 alpha helice]] | ||
[[Category: 7 stranded parallel beta sheet]] | [[Category: 7 stranded parallel beta sheet]] | ||
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[[Category: rossmann fold]] | [[Category: rossmann fold]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 00:38:45 2008'' |
Revision as of 21:38, 30 March 2008
| |||||||
| , resolution 2.30Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Activity: | L-xylulose reductase, with EC number 1.1.1.10 | ||||||
| Related: | 1PR9
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Strucutre of the tetrameric form of Human L-Xylulose Reductase
Overview
L-Xylulose reductase (XR) is a member of the short-chain dehydrogenase/reductase (SDR) superfamily. In this study we report the structure of the biological tetramer of human XR in complex with NADP(+) and a competitive inhibitor solved at 2.3 A resolution. A single subunit of human XR is formed by a centrally positioned, seven-stranded, parallel beta-sheet surrounded on either side by two arrays of three alpha-helices. Two helices located away from the main body of the protein form the variable substrate-binding cleft, while the dinucleotide coenzyme-binding motif is formed by a classical Rossmann fold. The tetrameric structure of XR, which is held together via salt bridges formed by the guanidino group of Arg203 from one monomer and the carboxylate group of the C-terminal residue Cys244 from the neighboring monomer, explains the ability of human XR to prevent the cold inactivation seen in the rodent forms of the enzyme. The orientations of Arg203 and Cys244 are maintained by a network of hydrogen bonds and main-chain interactions of Gln137, Glu238, Phe241, and Trp242. These interactions are similar to those defining the quaternary structure of the closely related carbonyl reductase from mouse lung. Molecular modeling and site-directed mutagenesis identified the active site residues His146 and Trp191 as forming essential contacts with inhibitors of XR. These results could provide a structural basis in the design of potent and specific inhibitors for human XR.
About this Structure
1WNT is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structure of the tetrameric form of human L-Xylulose reductase: probing the inhibitor-binding site with molecular modeling and site-directed mutagenesis., El-Kabbani O, Carbone V, Darmanin C, Ishikura S, Hara A, Proteins. 2005 Aug 15;60(3):424-32. PMID:15906319
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