Function
Intersectin (ITSN) is an endocytic multidomain scaffold protein in neurons and is important regulator of synaptic vescicles replenishment at hippocampal synapses. The replenishment is needed in order to sustain neurotransmission during periods of elevated activity. ITSN interacts with synapsin I through its SH3 domains[1].
Relevance
ITSN 2 might be a potential biomarker for discrimination of severe acute pancreatitis to improve the prognosis of patients[2]. Overexpression of ITSN 1 is implicated for human neurodegenerative diseases such as Down's syndrome and Alzheimer's disease[3].
Structural highlights
The 3D structure of the complex between the SH3 domains of ITSN 1 and FCHSD2 shows extensive contact surface composed mainly of hydrophobic interactions[4].