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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1979-9-17
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pubmed:abstractText |
Rat muscle was extracted at pH 4 and submitted to gel-filtration on Sephadex G-75 and to chromatography on DEAE-Sephadex. Gel-filtration gave a large peak of activity towards Bz-Arg-NNap with an estimated molecular weight of 25,500. Activity towards Bz-Arg-NH2 was present in this peak and in another peak of molecular weight 45,000. The second peak also hydrolysed benzoyl-glycyl-L-arginine. DEAE-Sephadex gave five peaks of Bz-Arg-NNap hydrolysing activity; all showed thiol dependence. Peaks III, IV and V hydrolysed Z-Ala-Arg-Arg-NNap-OMe rapidly; they also inactivated aldolase and were strongly inhibited by leupeptin. They are probably isoenzymes of cathepsin B1. Peak I showed these properties to a relatively small extent. 7-(N-Benzoyl-DL-argininamide)-4-methylcoumarin appears to be an alternative substrate for cathepsin B1; it was hydrolysed also by peak I, but relatively less rapidly. Peaks I and II were inhibited more than peaks III, IV and V by a muscle extract. Total activity of the Bz-Arg-NH2-hydrolysing enzyme in extensor digitorum longus muscle increased after denervation.
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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 |
0006-3002
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
25
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pubmed:volume |
577
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
253-66
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:454646-Animals,
pubmed-meshheading:454646-Cathepsins,
pubmed-meshheading:454646-Chromatography, Gel,
pubmed-meshheading:454646-Chromatography, Ion Exchange,
pubmed-meshheading:454646-Female,
pubmed-meshheading:454646-Muscle Denervation,
pubmed-meshheading:454646-Muscles,
pubmed-meshheading:454646-Rats
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pubmed:year |
1979
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pubmed:articleTitle |
Separation of cathepsin B1 and related enzymes from rat skeletal muscle.
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pubmed:publicationType |
Journal Article
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