Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/103301
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Type: Journal article
Title: Molecular cloning of cDNA encoding a novel platelet-endothelial cell tetra-span antigen, PETA-3
Author: Fitter, S.
Tetaz, T.
Berndt, M.
Ashman, L.
Citation: Blood, 1995; 86(4):1348-1355
Publisher: American Society of Hematology
Issue Date: 1995
ISSN: 0006-4971
1528-0020
Statement of
Responsibility: 
Stephen Fitter, Tim J. Tetaz, Michael C. Berndt, and Leonie K. Ashman
Abstract: Platelet-endothelial cell tetra-span antigen (PETA-3) was originally identified as a novel human platelet surface glycoprotein, gp27, which was detected by a monoclonal antibody (MoAb), 14A2.H1. Although this glycoprotein is present in low abundance on the platelet surface, MoAb 14A2.H1 stimulates platelet aggregation and mediator release. We now report isolation of a cDNA clone encoding PETA-3 from a library derived from the megakaryoblastic leukemia cell line MO7e. The clone encodes an open reading frame of 253 amino acids that displays 25% to 30% amino acid sequence identity with several members of the newly defined Tetraspan, or Transmembrane 4 superfamily. These proteins consist of four conserved putative transmembrane domains with a large divergent extracellular loop between the third and fourth membrane-spanning regions. PETA-3 has a single consensus sequence for N-linked glycosylation located in this extracellular loop. A single PETA-3 RNA transcript (1.6 kb) was detected in RNA isolated from MO7e cells, bone marrow stromal cells, the C11 endothelial cell line, and several myeloid leukemia cell lines. No transcript was detected in the lymphoblastoid cell lines MOLT-4 and BALM-1. This pattern correlates well with previous protein expression data. Northern blot analysis of RNA from a range of human tissues indicated that the transcript was present in most tissues, the notable exception being brain.
Keywords: Blood Platelets; Humans; Platelet Membrane Glycoproteins; DNA, Complementary; RNA, Messenger; DNA Primers; Antigens, CD; Cloning, Molecular; Sequence Alignment; Gene Expression; Amino Acid Sequence; Base Sequence; Sequence Homology, Amino Acid; Solubility; Molecular Sequence Data
Rights: © 1995 by The American Society of Hematology.
RMID: 0030062331
DOI: 10.1182/blood.V86.4.1348.bloodjournal8641348
Published version: http://www.bloodjournal.org.proxy.library.adelaide.edu.au/content/86/4/1348
Appears in Collections:Anthropology & Development Studies publications

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