Synaptotagmin-13 is a protein that in humans is encoded by the SYT13 gene.

SYT13 belongs to the large synaptotagmin protein family. All synaptotagmins show type I membrane topology, with an extracellular N terminus, a single transmembrane region, and a cytoplasmic C terminus containing tandem C2 domains. Major functions of synaptotagmins include vesicular traffic, exocytosis, and secretion.[supplied by OMIM, Apr 2004]. Sequence Note: This RefSeq record was created from transcript and genomic sequence data because no single transcript was available for the full length of the gene. The extent of this transcript is supported by transcript alignments and orthologous data.
Function: May be involved in transport vesicle docking to the plasma membrane (By similarity).