Linked Life Data

19187242

Source:http://linkedlifedata.com/resource/pubmed/id/19187242

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2009-3-2
pubmed:abstractText
The retinoid-inducible serine carboxypeptidase 1 (Scpep1; formerly RISC) is a lysosomal matrix protein that was initially identified in a screen for genes induced by retinoic acid. Recently, it has been spotlighted by several proteome analyses of the lysosomal compartment, but its cellular function and properties remain unknown to date. In this study, Scpep1 from mice was analysed with regard to its intracellular processing into a mature dimer consisting of a 35 kDa N-terminal fragment and a so far unknown 18 kDa C-terminal fragment and the glycosylation status of the mature Scpep1 fragment. Although Scpep1 shares notable homology and a number of structural hallmarks with the well-described lysosomal carboxypeptidase protective protein/cathepsin A, the purified recombinant 55 kDa precursor and the homogenates of Scpep1-overexpressing cells do not show proteolytic activity or increased serine carboxypeptidase activity towards artificial serine carboxypeptidase substrates. Hence, we disrupted the Scpep1 gene in mice by a gene trap cassette, resulting in a Scpep1/beta-galactosidase/neomycin phosphotransferase fusion protein. The fusion protein is devoid of the C-terminal half of Scpep1, including two amino acids of the assumed catalytic triad which is indispensable for its predicted serine carboxypeptidase activity. However, Scpep1-deficient mice were viable and fertile, and did not exhibit either lysosomal storage or reduced lysosomal SC activity under any tested condition.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1742-4658
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
276
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1356-69
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Molecular characterization and gene disruption of mouse lysosomal putative serine carboxypeptidase 1.
pubmed:affiliation
Abteilung Biochemie II, Georg-August Universität Göttingen, Göttingen, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't