Zhang P, et al. (2000) Cloning and characterization of human VPS35 and mouse Vps35 and mapping of VPS35 to human chromosome 16q13-q21. Genomics 70(2):253-7
Abstract: Maintenance of different organelles in eukaryotic cells depends on sorting proteins, which ensure the proper delivery of organelle-specific proteins. The studies on yeast (Saccharomyces cerevisiae) VPS35, a hydrophilic membrane protein having a direct role in the retrieval of cargo proteins, suggest a mechanism underlying a possible lysosomal protein-sorting pathway in mammalian cells. Here, we report the isolation of human and mouse VPS35 cDNAs, which are 3208 and 3186 bp in length, respectively. The deduced proteins of the two cDNAs, which are both composed of 796 amino acids and share 99% identity, show homology to yeast VPS35 and other VPS35 homologues of various sources ranging from Schizosaccharomyces pombe to Drosophila melanogaster (31-56% identity and 49-71% similarity), especially in their amino- and carboxyl-termini. The conservation of VPS35 suggests that the function of this class of protein is important. The results of Northern hybridization of human VPS35 in 16 tissues showed that one transcript of 3.6 kb was highly expressed in brain, heart, testis, ovary, small intestine, spleen, skeletal muscle, and placenta and expressed at moderate or low levels in other tissues. Another transcript of 3.0 kb was also expressed with proportionally lower levels than the 3.6-kb transcript in all the tissues except that the 3.0-kb transcript was not detected in brain. Mouse Vps35 was widely expressed as a 3.4-kb transcript. In addition, human VPS35 was assigned to human chromosome 16q13-q21 by radiation hybrid mapping. Copyright 2000 Academic Press.
|Status: Published||Type: Journal Article||PubMed ID: 11112353|
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