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Protein extracts derived from bone can initiate the process that begins with cartilage formation and ends in de novo bone formation. The critical components of this extract, termed bone morphogenetic protein (BMP), that direct cartilage and bone formation as well as the constitutive elements supplied by the animal during this process have long remained(More)
We report the cloning and expression of a cDNA encoding a high molecular weight (85.2 kd) cytosolic phospholipase A2 (cPLA2) that has no detectable sequence homology with the secreted forms of PLA2. We show that cPLA2 selectively cleaves arachidonic acid from natural membrane vesicles and demonstrate that cPLA2 translocates to membrane vesicles in response(More)
A cDNA clone encoding a novel hematopoietic growth factor activity produced by a gibbon T cell line has been identified using a mammalian cell expression cloning system. The sequence of this cDNA proved to have significant homology to the sequence encoding murine interleukin 3 (IL-3). The human gene, which was readily identified because of its high degree(More)
The production of the second messenger molecules diacylglycerol and inositol 1,4,5-trisphosphate is mediated by activated phosphatidylinositol-specific phospholipase C (PLC) enzymes. Here we report the cloning of a bovine brain complementary DNA encoding an enzyme PLC-148 that is characterized by calcium-dependent and phosphatidylinositol-specific(More)
We describe a simple, rapid technique for simultaneously isolating large numbers of cDNAs encoding secreted proteins. The technique makes use of a facile genetic selection performed in a strain of Saccharomyces cerevisiae deleted for its endogenous invertase gene. A cDNA cloning vector which carries a modified invertase gene lacking its leader sequence is(More)
cDNA clones encoding human factor V have been isolated from an oligo(dT)-primed human fetal liver cDNA library prepared with vector Charon 21A. The cDNA sequence of factor V from three overlapping clones includes a 6672-base-pair (bp) coding region, a 90-bp 5' untranslated region, and a 163-bp 3' untranslated region within which is a poly(A) tail. The(More)
A wide range of growth and differentiation processes are regulated by the signalling of receptor tyrosine kinases (RTKs). We have developed a nested polymerase chain reaction (PCR) procedure with degenerate primers, and used it to identify RTKs expressed in murine fetal thymus. A novel RTK, called FLT4, and the murine homologue of FLT were found, and their(More)
PKC-epsilon was isolated from a murine brain cDNA library. The clone, lambda 61PKC-epsilon, encoded a polypeptide of 737 amino acids that is homologous to other PKCs. Northern analysis showed that the 7 kb mRNA for this cDNA is widely expressed. The protein when expressed in COS-1 cells displayed phorbol ester-binding activity. However in order to detect(More)
We have cloned the cDNA encoding human GDP-mannose 4,6-dehydratase, the first enzyme in the pathway converting GDP-mannose to GDP-fucose. The message is expressed in all tissues and cell lines examined, and the cDNA complements Lec13, a Chinese Hamster Ovary cell line deficient in GDP-mannose 4,6-dehydratase activity. The human GDP-mannose 4,6-dehydratase(More)