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Tripeptidyl-peptidase II: a multi-purpose peptidase.
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Biochemistry. Department of Biochemistry and Organic Chemistry, Biochemistry.
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Chemistry, Department of Biochemistry. Department of Biochemistry and Organic Chemistry, Biochemistry.
2005 (English)In: Int J Biochem Cell Biol, ISSN 1357-2725, Vol. 37, no 10, 1933-7 p.Article, review/survey (Other (popular scientific, debate etc.)) Published
Abstract [en]

Tripeptidyl-peptidase II is a high-molecular weight peptidase with a widespread distribution in eukaryotic cells. The enzyme sequentially removes tripeptides from a free N-terminus of longer peptides and also displays a low endopeptidase activity. A role for tripeptidyl-peptidase II in the formation of peptides for antigen presentation has recently become evident, and the enzyme also appears to be important for the degradation of some specific substrates, e.g. the neuropeptide cholecystokinin. However, it is likely that the main biological function of tripeptidyl-peptidase II is to participate in a general intracellular protein turnover. This peptidase may act on oligopeptides generated by the proteasome, or other endopeptidases, and the tripeptides formed would subsequently be good substrates for other exopeptidases. The fact that tripeptidyl-peptidase II activity is increased in sepsis-induced muscle wasting, a situation of enhanced protein turnover, corroborates this biological role.

Place, publisher, year, edition, pages
2005. Vol. 37, no 10, 1933-7 p.
Keyword [en]
Animals, Gene Expression Regulation, Humans, Models; Biological, Proteasome Endopeptidase Complex/metabolism, Research Support; Non-U.S. Gov't, Serine Endopeptidases/chemistry/metabolism/physiology
National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Identifiers
URN: urn:nbn:se:uu:diva-76757PubMedID: 16125107OAI: oai:DiVA.org:uu-76757DiVA: diva2:104669
Available from: 2006-03-07 Created: 2006-03-07 Last updated: 2011-01-11

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Tomkinson, BirgittaLindås, Ann-Christin

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