SCAMP

Ubiquitous integral membrane protein of secretory and transport vesicles

General Information

SCAMPs (secretory carrier membrane proteins) are general markers of membranes that function in cell surface recycling such as secretory vesicles, pancreatic granules, etc. They have four conserved transmembrane regions (TMRs) suggesting a "core" function in membrane traffic.
Five isoforms (SCAMP 1-5) have been described. SCAMP 1-3 contain NPF repeats that interact with EH-domain proteins which are involved in the budding of transport vesicles from the plasma membrane or the Golgi complex. SCAMP 4 and SCAMP 5 lack the NPF repeats.
SCAMP 1-4 are ubiquitously expressed whereas SCAMP 5 is expressed exclusively in brain during late development.