IQSEC2

IQ motif and Sec7 domain 2 is a protein that in humans is encoded by the "IQSEC2" gene.
Function.
The IQSEC2 gene encodes a guanine nucleotide exchange factor for the ARF family of GTP-binding proteins (see for example ARF1).
Clinical significance.
It is associated with X-Linked mental retardation 1.