Synaptophysin (SYP) Antibody – Rabbit Polyclonal

This gene encodes an integral membrane protein of small synaptic vesicles in brain and endocrine cells. The protein also binds cholesterol and is thought to direct targeting of vesicle-associated membrane protein 2 (synaptobrevin) to intracellular compartments. Mutations in this gene are associated with X-linked mental retardation (XLMR). [provided by RefSeq, Aug 2011]

SYP: Possibly involved in structural functions as organizing other membrane components or in targeting the vesicles to the plasma membrane. Involved in the regulation of short-term and long-term synaptic plasticity. Homohexamer or homotetramer. Interacts with SRCIN1. Characteristic of a type of small (30-80 nm) neurosecretory vesicles, including presynaptic vesicles, but also vesicles of various neuroendocrine cells of both neuronal and epithelial phenotype. Belongs to the synaptophysin/synaptobrevin family.

Protein type: Membrane protein, integral; Vesicle; Membrane protein, multi-pass

Chromosomal Location of Human Ortholog: Xp11.23-p11.22

Cellular Component: presynaptic membrane; synaptic vesicle; neuron projection; protein complex; synaptic vesicle membrane; presynaptic active zone; excitatory synapse; cell junction; integral to synaptic vesicle membrane

Molecular Function: identical protein binding; protein self-association; transporter activity; syntaxin-1 binding; protein complex binding; cholesterol binding; SH2 domain binding

Biological Process: regulation of long-term neuronal synaptic plasticity; synaptic vesicle maturation; synaptic vesicle membrane organization and biogenesis; endocytosis; regulation of short-term neuronal synaptic plasticity; regulation of neuronal synaptic plasticity

Disease: Mental Retardation, X-linked 96