Linked Life Data

9630604

Source:http://linkedlifedata.com/resource/pubmed/id/9630604

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1998-8-6
pubmed:abstractText
Holocarboxylase synthetase (HCS) is a key enzyme in biotin utilization in eukaryotic cells. In a previous work from our laboratory, we described the cloning and sequencing of a full-length human HCS cDNA. Due to the presence of three candidate sites for initiation of translation, the identification of full-length HCS proteins remains uncertain. Using antibodies directed against human HCS sequences, we have identified, in human placenta, three cytosolic HCS proteins, of 86, 82 and 76 kDa. Similar results were observed in lysates of cells transfected with an HCS expression vector, as well as with human HCS cDNA transcribed and translated in a cell-free system. When anti-HCS antibodies were tested for their ability to inhibit HCS enzymatic activity, only the antibody directed against a region of HCS from Ile128 to Pro398, and not the antibodies against more proximal N-terminal regions inhibited HCS activity, suggesting that the sequence from Ile128 to Pro398 is essential for the catalytic activity of this enzyme. HCS synthesized in a cell-free system was not translocated into rat liver mitochondria. These results suggest that our human HCS cDNA encodes the cytosolic forms of the enzyme. These results also suggest that mRNA encoding cytosolic HCS can be translated from all three translation initiation codons, Met1, Met7 and Met58.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0006-3002
pubmed:author
pubmed:copyrightInfo
Copyright 1998 Elsevier Science B.V. All rights reserved.
pubmed:issnType
Print
pubmed:day
11
pubmed:volume
1385
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
165-71
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Identification of holocarboxylase synthetase (HCS) proteins in human placenta.
pubmed:affiliation
Department of Biochemical Genetics, Tohoku University School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-77, Japan. mhiratsuka@ped.med.tohoku.ac.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't