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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
11
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pubmed:dateCreated |
1997-3-13
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pubmed:abstractText |
The aim of this research is to characterize the presence of insulin-degrading enzyme in human colon and ileal mucosal cells. Biochemical studies, including the activity-pH profiles, the effects of enzyme inhibitors, immunoprecipitation and western blots, were conducted. The majority of insulin-degrading activity in colon mucosal cells was localized in the cytosol. In both colon and ileum, cytosolic insulin-degrading activities had a pH optimum at pH 7.5, and were extensively inhibited by each of N-ethylmaleimide, p-chloromercuribenzoate, and 1,10-phenanthroline, but were very weakly affected by each of leupeptin, chymostatin, diisopropyl phosphofluoridate and soybean trypsin inhibitor. In the colon and ileum, more than 93% and 96%, respectively, of cytosolic insulin-degrading activities were removed by the mouse monoclonal antibody to human RBC insulin-degrading enzyme, as compared with less than 20% by the normal mouse IgG for both tissues. Further, a western blot analysis revealed that a cytosolic protein of 110 kD, in both human colon and ileum, reacted with the monoclonal antibody to insulin-degrading enzyme. It is concluded that insulin-degrading enzyme is present in the cytosol of human colon and ileal mucosal cells.
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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 |
Nov
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pubmed:issn |
0022-3573
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
48
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1180-4
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pubmed:dateRevised |
2011-11-17
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pubmed:meshHeading |
pubmed-meshheading:8961169-Animals,
pubmed-meshheading:8961169-Blotting, Western,
pubmed-meshheading:8961169-Caco-2 Cells,
pubmed-meshheading:8961169-Colon,
pubmed-meshheading:8961169-Cytosol,
pubmed-meshheading:8961169-Enzyme Inhibitors,
pubmed-meshheading:8961169-Humans,
pubmed-meshheading:8961169-Hydrogen-Ion Concentration,
pubmed-meshheading:8961169-Ileum,
pubmed-meshheading:8961169-Insulin,
pubmed-meshheading:8961169-Insulin Antagonists,
pubmed-meshheading:8961169-Insulysin,
pubmed-meshheading:8961169-Intestinal Mucosa,
pubmed-meshheading:8961169-Mice
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pubmed:year |
1996
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pubmed:articleTitle |
The presence of insulin-degrading enzyme in human ileal and colonic mucosal cells.
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pubmed:affiliation |
College of Pharmacy, University of Minnesota, Minneapolis 55455, USA.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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