Source:http://linkedlifedata.com/resource/pubmed/id/11888318
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
2002-3-12
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pubmed:abstractText |
Protease-catalyzed polymerization and copolymerization of L-glutamic acid diethyl ester hydrochloride (1) have been performed in a buffer of high concentration. Papain and bromelain showed high catalytic activity toward the polymerization. H-H COSY NMR analysis of the product showed the exclusive formation of poly(alpha-peptide), which was further confirmed by comparison with NMR spectra of poly(alpha-methyl gamma-L-glutamate). The papain-catalyzed polymerization of gamma-methyl L-glutamate did not occur under the similar reaction conditions, supporting the regioselective production of the polymer having an alpha-peptide linkage from 1. The effects of the reaction parameters have been systematically investigated. The copolymerization of 1 with various amino acid esters took place by the papain catalyst to give peptide copolymers.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Amino Acids,
http://linkedlifedata.com/resource/pubmed/chemical/Bromelains,
http://linkedlifedata.com/resource/pubmed/chemical/Endopeptidases,
http://linkedlifedata.com/resource/pubmed/chemical/Glutamates,
http://linkedlifedata.com/resource/pubmed/chemical/Papain,
http://linkedlifedata.com/resource/pubmed/chemical/Polyglutamic Acid,
http://linkedlifedata.com/resource/pubmed/chemical/Polymers,
http://linkedlifedata.com/resource/pubmed/chemical/glutamic acid diethyl ester,
http://linkedlifedata.com/resource/pubmed/chemical/poly-gamma-methylglutamate
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pubmed:status |
MEDLINE
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pubmed:issn |
1525-7797
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
3
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
318-23
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:11888318-Amino Acids,
pubmed-meshheading:11888318-Bromelains,
pubmed-meshheading:11888318-Endopeptidases,
pubmed-meshheading:11888318-Glutamates,
pubmed-meshheading:11888318-Magnetic Resonance Spectroscopy,
pubmed-meshheading:11888318-Models, Chemical,
pubmed-meshheading:11888318-Papain,
pubmed-meshheading:11888318-Polyglutamic Acid,
pubmed-meshheading:11888318-Polymers
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pubmed:articleTitle |
Protease-catalyzed regioselective polymerization and copolymerization of glutamic acid diethyl ester.
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pubmed:affiliation |
Department of Materials Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, Non-U.S. Gov't
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