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A human synaptic vesicle monoamine transporter cDNA predicts posttranslational modifications, reveals chromosome 10
C K Surratt1, A M Persico, X D Yang
1Molecular Neurobiology, Addiction Research Center, NIDA, NIH, Baltimore, MD 21224.
Abstract:
A human vesicular monoamine transporter cDNA has been identified by screening a human brainstem library using sequences from the rat brain synaptic vesicle monoamine transporter (SVMT) [(1992) Cell 70, 539-551; (1992) Proc. Natl. Acad. Sci. USA 89, 10993-10997]. The hSVMT shares 92% amino acid identity with the rat sequence, but displays one less consensus site for asparagine N-linked glycosylation and one more consensus site for phosphorylation by protein kinase C. The human SVMT gene maps to chromosome 10q25 using Southern blotting analysis of human/rodent hybrid cell lines and fluorescent in situ hybridization approaches. The cDNA, and a subclone, recognize TaqI polymorphisms that may prove useful to assess this gene's involvement in neuropsychiatric disorders involving monoaminergic brain systems.