1hqg
From Proteopedia
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|PDB= 1hqg |SIZE=350|CAPTION= <scene name='initialview01'>1hqg</scene>, resolution 2.Å | |PDB= 1hqg |SIZE=350|CAPTION= <scene name='initialview01'>1hqg</scene>, resolution 2.Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=ORN:ORNITHINE'>ORN</scene> | + | |LIGAND= <scene name='pdbligand=CME:S,S-(2-HYDROXYETHYL)THIOCYSTEINE'>CME</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=ORN:ORNITHINE'>ORN</scene>, <scene name='pdbligand=URE:UREA'>URE</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/Arginase Arginase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.3.1 3.5.3.1] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Arginase Arginase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.3.1 3.5.3.1] </span> |
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1rla|1rla]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1hqg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1hqg OCA], [http://www.ebi.ac.uk/pdbsum/1hqg PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1hqg RCSB]</span> | ||
}} | }} | ||
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[[Category: Colleluori, D M.]] | [[Category: Colleluori, D M.]] | ||
[[Category: Cox, J D.]] | [[Category: Cox, J D.]] | ||
| - | [[Category: MN]] | ||
| - | [[Category: ORN]] | ||
| - | [[Category: URE]] | ||
[[Category: binuclear manganese cluster]] | [[Category: binuclear manganese cluster]] | ||
[[Category: product]] | [[Category: product]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:09:03 2008'' |
Revision as of 18:09, 30 March 2008
| |||||||
| , resolution 2.Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , , | ||||||
| Activity: | Arginase, with EC number 3.5.3.1 | ||||||
| Related: | 1rla
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURE OF THE H141C ARGINASE VARIANT COMPLEXED WITH PRODUCTS ORNITHINE AND UREA
Overview
Arginase is a binuclear Mn(2+) metalloenzyme that catalyzes the hydrolysis of L-arginine to L-ornithine and urea. X-ray crystal structures of arginase complexed to substrate analogues N(omega)-hydroxy-L-arginine and N(omega)-hydroxy-nor-L-arginine, as well as the products L-ornithine and urea, complete a set of structural "snapshots" along the reaction coordinate of arginase catalysis when interpreted along with the X-ray crystal structure of the arginase-transition-state analogue complex described in Kim et al. [Kim, N. N., Cox, J. D., Baggio, R. F., Emig, F. A., Mistry, S., Harper, S. L., Speicher, D. W., Morris, Jr., S. M., Ash, D. E., Traish, A. M., and Christianson, D. W. (2001) Biochemistry 40, 2678-2688]. Taken together, these structures render important insight on the structural determinants of tight binding inhibitors. Furthermore, we demonstrate for the first time the structural mechanistic link between arginase and NO synthase through their respective complexes with N(omega)-hydroxy-L-arginine. That N(omega)-hydroxy-L-arginine is a catalytic intermediate for NO synthase and an inhibitor of arginase reflects the reciprocal metabolic relationship between these two critical enzymes of L-arginine catabolism.
About this Structure
1HQG is a Single protein structure of sequence from Rattus norvegicus. Full crystallographic information is available from OCA.
Reference
Mechanistic and metabolic inferences from the binding of substrate analogues and products to arginase., Cox JD, Cama E, Colleluori DM, Pethe S, Boucher JL, Mansuy D, Ash DE, Christianson DW, Biochemistry. 2001 Mar 6;40(9):2689-701. PMID:11258880
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