Extended synaptotagmin-like protein 1 is a human gene encoded by the symbol, ESYT1. It may also be known as: Extended synaptotagmin-1; E-Syt1; Membrane-bound C2 domain-containing protein; FAM62A; MBC2. The encoded protein has an amino acid length of 1104 and a mass of 122.9 kDa. Other isoforms may exist. Extended synaptotagmin-like protein 1 is a member of the Extended synaptotagmin family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Frog, Chicken.