2ci4

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{{STRUCTURE_2ci4| PDB=2ci4 | SCENE= }}
{{STRUCTURE_2ci4| PDB=2ci4 | SCENE= }}
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'''CRYSTAL STRUCTURE OF DIMETHYLARGININE DIMETHYLAMINOHYDROLASE I CRYSTAL FORM II'''
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===CRYSTAL STRUCTURE OF DIMETHYLARGININE DIMETHYLAMINOHYDROLASE I CRYSTAL FORM II===
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==Overview==
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Dimethylarginine dimethylaminohydrolase (DDAH) is involved in the regulation of nitric oxide synthase (NOS) by metabolizing the free endogenous arginine derivatives N(omega)-methyl-L-arginine (MMA) and N(omega),N(omega)-dimethyl-L-arginine (ADMA), which are competitive inhibitors of NOS. Here, we present high-resolution crystal structures of DDAH isoform 1 (DDAH-1) isolated from bovine brain in complex with different inhibitors, including S-nitroso-L-homocysteine and Zn2+, a regulator of this mammalian enzyme. The structure of DDAH-1 consists of a propeller-like fold similar to other arginine-modifying enzymes and a flexible loop, which adopts different conformations and acts as a lid at the entrance of the active site. The orientation and interaction mode of inhibitors in the active site give insight into the regulation and the molecular mechanism of the enzyme. The presented structures provide a basis for the structure-based development of specific DDAH-1 inhibitors that might be useful in the therapeutic treatment of NOS dysfunction-related diseases.
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{{ABSTRACT_PUBMED_16698551}}
==About this Structure==
==About this Structure==
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[[Category: S-nitrosylation]]
[[Category: S-nitrosylation]]
[[Category: Zinc]]
[[Category: Zinc]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 22:12:04 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 15:57:47 2008''

Revision as of 12:57, 27 July 2008

Image:2ci4.png

Template:STRUCTURE 2ci4

CRYSTAL STRUCTURE OF DIMETHYLARGININE DIMETHYLAMINOHYDROLASE I CRYSTAL FORM II

Template:ABSTRACT PUBMED 16698551

About this Structure

2CI4 is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.

Reference

Structure of the mammalian NOS regulator dimethylarginine dimethylaminohydrolase: A basis for the design of specific inhibitors., Frey D, Braun O, Briand C, Vasak M, Grutter MG, Structure. 2006 May;14(5):901-11. PMID:16698551

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