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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1994-5-5
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pubmed:databankReference | |
pubmed:abstractText |
A new serine proteinase inhibitor, rapeseed trypsin inhibitor (RTI), has been isolated from rapeseed (Brassica napus var. oleifera) seed. The protein inhibits the catalytic activity of bovine beta-trypsin and bovine alpha-chymotrypsin with apparent dissociation constants of 3.0 x 10(-10) M and 4.1 x 10(-7) M, at pH 8.0 and 21 degrees C, respectively. The stoichiometry of both proteinase-inhibitor complexes is 1:1. The amino acid sequence of RTI consists of 60 amino acid residues, corresponding to an M(r) of about 6.7 kDa. The P1-P1' reactive site bond has been tentatively identified at position Arg20-Ile21. RTI shows no similarity to other serine proteinase inhibitors except the low molecular weight mustard trypsin inhibitor (MTI-2). RTI and MTI-2 could be members of a new class of plant serine proteinase inhibitors.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Apr
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pubmed:issn |
0014-5793
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
4
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pubmed:volume |
342
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
221-4
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:8143882-Amino Acid Sequence,
pubmed-meshheading:8143882-Binding Sites,
pubmed-meshheading:8143882-Brassica,
pubmed-meshheading:8143882-Molecular Sequence Data,
pubmed-meshheading:8143882-Mustard Plant,
pubmed-meshheading:8143882-Plant Proteins,
pubmed-meshheading:8143882-Plants, Medicinal,
pubmed-meshheading:8143882-Seeds,
pubmed-meshheading:8143882-Sequence Homology, Amino Acid,
pubmed-meshheading:8143882-Trypsin Inhibitors
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pubmed:year |
1994
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pubmed:articleTitle |
Purification, inhibitory properties, amino acid sequence and identification of the reactive site of a new serine proteinase inhibitor from oil-rape (Brassica napus) seed.
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pubmed:affiliation |
Istituto di Fisiologia Veterinaria e Biochimica, Università di Milano, Italy.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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