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Genomic organization, chromosomal localization, alternative splicing,and isoforms of the human synaptosome-associated protein-23 gene implicated in vesicle-membrane fusion processes

AuthorsLazo, Pedro A. ; Nadal, Marga; Ferrer, Milagros; Area, Estela; Hernández-Torres, Javier; Nabokina, S. M.; Mollinedo, Faustino ; Estivill, Xavier
Issue Date6-Mar-2001
CitationHuman Genetics 108(3): 211–215 (2001)
AbstractSynaptosome-associated protein-23 (SNAP23) is a component of the cellular mechanism required for specific membrane fusion and targetting of intracellular vesicles. We have cloned the full-length human cDNA and the SNAP23 gene. The SNAP23 gene has eight exons, with the initiation codon located in exon 2, and maps to the human chromosome 15q21–22 region. The human SNAP23 gene can generate two types of message, the full-length message (SNAP23A) and a shorter message (SNAP23B). The latter is the result of alternative splicing where exon 5 is joined to exon 7 and the skipping of exon 6; it thus lacks a region that is required for non-specific binding to plasma membranes. The two isoforms, expressed as fusion proteins with glutathione-S-transferase, interact in vitro with human syntaxin 6, thus retaining the specific protein interaction required for membrane fusion. Alterations in the SNAP23 gene might be involved in neurological and other diseases with defects in vesicle-membrane fusion processes that map to 15q15–21.
Description5 pages, 2 figures.-- PMID: 11354632 [PubMed].-- Related research antibodies (Cytoskeleton antibodies, anti-SNAP23, anti-syntaxin 6 and anti-glutathione-S-transferase) available at http://www.antibodies-online.com/
Publisher version (URL)http://dx.doi.org/10.1007/s004390100480
Appears in Collections:(IBMCC) Artículos
(CNB) Artículos
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