1lxy
From Proteopedia
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| - | [[Image:1lxy.gif|left|200px]] | + | [[Image:1lxy.gif|left|200px]] |
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| - | '''Crystal Structure of Arginine Deiminase covalently linked with L-citrulline''' | + | {{Structure |
| + | |PDB= 1lxy |SIZE=350|CAPTION= <scene name='initialview01'>1lxy</scene>, resolution 2.00Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=CIR:CITRULLINE'>CIR</scene> and <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene> | ||
| + | |ACTIVITY= [http://en.wikipedia.org/wiki/Arginine_deiminase Arginine deiminase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.5.3.6 3.5.3.6] | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''Crystal Structure of Arginine Deiminase covalently linked with L-citrulline''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1LXY is a [ | + | 1LXY is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mycoplasma_arginini Mycoplasma arginini]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LXY OCA]. |
==Reference== | ==Reference== | ||
| - | Crystal structures of arginine deiminase with covalent reaction intermediates; implications for catalytic mechanism., Das K, Butler GH, Kwiatkowski V, Clark AD Jr, Yadav P, Arnold E, Structure. 2004 Apr;12(4):657-67. PMID:[http:// | + | Crystal structures of arginine deiminase with covalent reaction intermediates; implications for catalytic mechanism., Das K, Butler GH, Kwiatkowski V, Clark AD Jr, Yadav P, Arnold E, Structure. 2004 Apr;12(4):657-67. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15062088 15062088] |
[[Category: Arginine deiminase]] | [[Category: Arginine deiminase]] | ||
[[Category: Mycoplasma arginini]] | [[Category: Mycoplasma arginini]] | ||
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[[Category: deiminase; hydrolase; 5-fold pseudo-symmetric domain; 5-helix bundle domain]] | [[Category: deiminase; hydrolase; 5-fold pseudo-symmetric domain; 5-helix bundle domain]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:36:25 2008'' |
Revision as of 10:36, 20 March 2008
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| , resolution 2.00Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | and | ||||||
| Activity: | Arginine deiminase, with EC number 3.5.3.6 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of Arginine Deiminase covalently linked with L-citrulline
Overview
Arginine deiminase (ADI), an enzyme that hydrolyzes arginine to generate energy in many parasitic microorganisms, has potent anticancer activities and can halt growth of solid tumors. We determined the crystal structure of ADI from Mycoplasma arginini in two different forms (1.6 and 2.0 A resolution) using multiple isomorphous replacement. ADI shares common structural features with the arginine-catabolizing enzymes Arg:Gly amidinotransferase and dimethylarginine dimethyl-aminohydrolase; ADI contains an additional domain of five helices. The scissile C-N bonds of the substrates and the catalytic triads (Cys398-His269-Glu213 of ADI) for the three enzymes superimpose on each other. The ADI structure from form I crystals corresponds to a tetrahedral intermediate with four heteroatoms (1S, 2N, 1O) covalently bonded to the reaction-center carbon. The structure from form II crystals represents an amidino-enzyme complex; the reaction-center carbon is covalently bonded to Cys398 sulfur and two nitrogens, and the reacting water molecule is only 2.54 A away.
About this Structure
1LXY is a Single protein structure of sequence from Mycoplasma arginini. Full crystallographic information is available from OCA.
Reference
Crystal structures of arginine deiminase with covalent reaction intermediates; implications for catalytic mechanism., Das K, Butler GH, Kwiatkowski V, Clark AD Jr, Yadav P, Arnold E, Structure. 2004 Apr;12(4):657-67. PMID:15062088
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