Source:http://linkedlifedata.com/resource/pubmed/id/12453632
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rdf:type | |
lifeskim:mentions | |
pubmed:dateCreated |
2002-11-27
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pubmed:abstractText |
After extraction and purification, the kinetic behavior of the Ca(2+)/calmodulin-dependent protein kinase II (CaM kinase II) from horse brain was investigated as a function of ATP and a synthetic substrate, syntide-2. Both phospho- and dephospho- forms of the enzyme obey a bi-bi random mechanism. The K(M)s for ATP (K(M,ATP)) and syntide-2 (K(M,syntide-2)) were determined as equal to 80 and 30 microM, respectively. However, the maximum reaction yield is decreased by 50% when the enzyme is (auto)phosphorylated. In addition, this phosphorylated form of the enzyme leads to the formation of a totally Ca(2+)-independent state of activity.
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pubmed:language |
eng
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pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Adenosine Triphosphate,
http://linkedlifedata.com/resource/pubmed/chemical/Calcium,
http://linkedlifedata.com/resource/pubmed/chemical/Calcium-Calmodulin-Dependent...,
http://linkedlifedata.com/resource/pubmed/chemical/Calcium-Calmodulin-Dependent...,
http://linkedlifedata.com/resource/pubmed/chemical/Peptides,
http://linkedlifedata.com/resource/pubmed/chemical/syntide-2
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pubmed:status |
MEDLINE
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pubmed:author | |
pubmed:copyrightInfo |
Copyright 2002 Société françcaise de biochimie et biologie moléculaire / Editions scientifiques et médicales Elsevier SAS
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
605-10
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pubmed:dateRevised |
2007-11-15
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pubmed:articleTitle |
Effect of (auto)phosphorylation on the kinetic behavior of the Ca2+/calmodulin-dependent protein kinase II from horse brain.
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pubmed:affiliation |
UPRESA no 6022 du CNRS, Génie Enzymatique et Cellulaire, BP 20529, Université de Compiègne, 60205 Compiègne cedex, France.
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