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2q6u

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[[Image:2q6u.jpg|left|200px]]
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{{Seed}}
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[[Image:2q6u.png|left|200px]]
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{{STRUCTURE_2q6u| PDB=2q6u | SCENE= }}
{{STRUCTURE_2q6u| PDB=2q6u | SCENE= }}
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'''SeMet-substituted form of NikD'''
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===SeMet-substituted form of NikD===
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==Overview==
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NikD is an unusual amino-acid-oxidizing enzyme that contains covalently bound FAD, catalyzes a 4-electron oxidation of piperideine-2-carboxylic acid to picolinate, and plays a critical role in the biosynthesis of nikkomycin antibiotics. Crystal structures of closed and open forms of nikD, a two-domain enzyme, have been determined to resolutions of 1.15 and 1.9 A, respectively. The two forms differ by an 11 degrees rotation of the catalytic domain with respect to the FAD-binding domain. The active site is inaccessible to solvent in the closed form; an endogenous ligand, believed to be picolinate, is bound close to and parallel with the flavin ring, an orientation compatible with redox catalysis. The active site is solvent accessible in the open form, but the picolinate ligand is approximately perpendicular to the flavin ring and a tryptophan is stacked above the flavin ring. NikD also contains a mobile cation binding loop.
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(as it appears on PubMed at http://www.pubmed.gov), where 17697998 is the PubMed ID number.
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{{ABSTRACT_PUBMED_17697998}}
==About this Structure==
==About this Structure==
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[[Category: Flavoprotein]]
[[Category: Flavoprotein]]
[[Category: Rossmann fold]]
[[Category: Rossmann fold]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 14:27:27 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 04:39:28 2008''

Revision as of 01:39, 28 July 2008

Image:2q6u.png

Template:STRUCTURE 2q6u

SeMet-substituted form of NikD

Template:ABSTRACT PUBMED 17697998

About this Structure

2Q6U is a Single protein structure of sequence from Streptomyces tendae. Full crystallographic information is available from OCA.

Reference

NikD, an unusual amino acid oxidase essential for nikkomycin biosynthesis: structures of closed and open forms at 1.15 and 1.90 A resolution., Carrell CJ, Bruckner RC, Venci D, Zhao G, Jorns MS, Mathews FS, Structure. 2007 Aug;15(8):928-41. PMID:17697998

Page seeded by OCA on Mon Jul 28 04:39:28 2008

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