2ix6

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{{STRUCTURE_2ix6| PDB=2ix6 | SCENE= }}
{{STRUCTURE_2ix6| PDB=2ix6 | SCENE= }}
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'''SHORT CHAIN SPECIFIC ACYL-COA OXIDASE FROM ARABIDOPSIS THALIANA, ACX4'''
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===SHORT CHAIN SPECIFIC ACYL-COA OXIDASE FROM ARABIDOPSIS THALIANA, ACX4===
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==Overview==
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Plants produce a unique peroxisomal short chain-specific acyl-CoA oxidase (ACX4) for beta-oxidation of lipids. The short chain-specific oxidase has little resemblance to other peroxisomal acyl-CoA oxidases but has an approximately 30% sequence identity to mitochondrial acyl-CoA dehydrogenases. Two biochemical features have been linked to structural properties by comparing the structures of short chain-specific Arabidopsis thaliana ACX4 with and without a substrate analogue bound in the active site to known acyl-CoA oxidases and dehydrogenase structures: (i) a solvent-accessible acyl binding pocket is not required for oxygen reactivity, and (ii) the oligomeric state plays a role in substrate pocket architecture but is not linked to oxygen reactivity. The structures indicate that the acyl-CoA oxidases may encapsulate the electrons for transfer to molecular oxygen by blocking the dehydrogenase substrate interaction site with structural extensions. A small binding pocket observed adjoining the flavin adenine dinucleotide N5 and C4a atoms could increase the number of productive encounters between flavin adenine dinucleotide and O2.
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{{ABSTRACT_PUBMED_16887802}}
==About this Structure==
==About this Structure==
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[[Category: Oxidoreductase]]
[[Category: Oxidoreductase]]
[[Category: Peroxisome]]
[[Category: Peroxisome]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 08:01:22 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 08:52:41 2008''

Revision as of 05:52, 28 July 2008

Image:2ix6.png

Template:STRUCTURE 2ix6

SHORT CHAIN SPECIFIC ACYL-COA OXIDASE FROM ARABIDOPSIS THALIANA, ACX4

Template:ABSTRACT PUBMED 16887802

About this Structure

2IX6 is a Single protein structure of sequence from Arabidopsis thaliana. Full crystallographic information is available from OCA.

Reference

Controlling electron transfer in Acyl-CoA oxidases and dehydrogenases: a structural view., Mackenzie J, Pedersen L, Arent S, Henriksen A, J Biol Chem. 2006 Oct 13;281(41):31012-20. Epub 2006 Aug 3. PMID:16887802

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