Source:http://linkedlifedata.com/resource/pubmed/id/10610793
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
2000-1-13
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pubmed:abstractText |
The 2.4 A crystal structure of the vitamin B6-dependent enzyme 1-aminocyclopropane-1-carboxylate (ACC) synthase is described. This enzyme catalyses the committed step in the biosynthesis of ethylene, a plant hormone that is responsible for the initiation of fruit ripening and for regulating many other developmental processes. ACC synthase has 15 % sequence identity with the well-studied aspartate aminotransferase, and a completely different catalytic activity yet the overall folds and the active sites are very similar. The new structure together with available biochemical data enables a comparative mechanistic analysis that largely explains the catalytic roles of the conserved and non-conserved active site residues. An external aldimine reaction intermediate (external aldimine with ACC, i.e. with the product) has been modeled. The new structure provides a basis for the rational design of inhibitors with broad agricultural applications.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/1-aminocyclopropanecarboxylate...,
http://linkedlifedata.com/resource/pubmed/chemical/Aspartate Aminotransferases,
http://linkedlifedata.com/resource/pubmed/chemical/Enzyme Inhibitors,
http://linkedlifedata.com/resource/pubmed/chemical/Ethylenes,
http://linkedlifedata.com/resource/pubmed/chemical/Lyases,
http://linkedlifedata.com/resource/pubmed/chemical/ethylene
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pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
0022-2836
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pubmed:author | |
pubmed:copyrightInfo |
Copyright 1999 Academic Press.
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pubmed:issnType |
Print
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pubmed:day |
3
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pubmed:volume |
294
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
745-56
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:10610793-Amino Acid Sequence,
pubmed-meshheading:10610793-Aspartate Aminotransferases,
pubmed-meshheading:10610793-Binding Sites,
pubmed-meshheading:10610793-Crystallography, X-Ray,
pubmed-meshheading:10610793-Dimerization,
pubmed-meshheading:10610793-Drug Design,
pubmed-meshheading:10610793-Enzyme Inhibitors,
pubmed-meshheading:10610793-Ethylenes,
pubmed-meshheading:10610793-Lyases,
pubmed-meshheading:10610793-Models, Molecular,
pubmed-meshheading:10610793-Molecular Sequence Data,
pubmed-meshheading:10610793-Plants,
pubmed-meshheading:10610793-Protein Conformation
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pubmed:year |
1999
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pubmed:articleTitle |
Structure of 1-aminocyclopropane-1-carboxylate synthase, a key enzyme in the biosynthesis of the plant hormone ethylene.
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pubmed:affiliation |
Structural Biology Division Biozentrum, University of Basel, Basel, CH-4056, Switzerland. capitani@biocfebs.unizh.ch
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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