2. Academic Validation
  3. Cloning and genomic characterization of sytdep, a new synaptotagmin XIV-related gene

Cloning and genomic characterization of sytdep, a new synaptotagmin XIV-related gene

  • Biochem Biophys Res Commun. 2006 Feb 10;340(2):386-94. doi: 10.1016/j.bbrc.2005.11.184.
M Javier Herrero-Turrión 1,  Mitsunori Fukuda,  Faustino Mollinedo
Affiliations

Affiliation

  • 1 Centro de Investigación del Cáncer, Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (C.S.I.C.)-Universidad de Salamanca, Campus Miguel de Unamuno, E-37007 Salamanca, Spain.
PMID: 16376304 DOI: 10.1016/j.bbrc.2005.11.184
Abstract

We have identified a new human gene coined sytdep (synaptotagmin XIV-derived protein) in human neutrophils. Sytdep encodes a 188-amino acid sequence with a 21.435kDa deduced molecular mass, showing 75% identity to human synaptotagmin (syt) XIV. Human neutrophils express sytdep, but not syt XIV. Sytdep was upregulated during HL-60 neutrophil differentiation. Sytdep gene is located in human chromosome 4 and contains a unique exon, whereas syt XIV gene, located in chromosome 1, comprises 10 exons with 9 introns. Mouse genome did not contain sytdep. The N-terminal region of sytdep shows no homology with any known protein and, unlike synaptotagmin XIV isoforms, sytdep shows a unique C-terminal C2B domain. Polyclonal Antibodies against the C2B domain of syt XIV recognized sytdep as a 27-kDa protein in human neutrophils. Genomic analyses suggest that human sytdep could derive from a retrotranslocation of a syt XIV transcript into chromosome 4.

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