GDP Dissociation Inhibitor 1 (GDI1) Human Recombinant Protein

GDP dissociation inhibitors are proteins that regulate the GDP-GTP exchange reaction of members of the rab family, small GTP-binding proteins of the ras superfamily, that are involved in vesicular trafficking of molecules between cellular organelles. GDIs slow the rate of dissociation of GDP from rab proteins and release GDP from membrane-bound rabs. GDI1 is expressed primarily in neural and sensory tissues. Mutations in GDI1 have been linked to X-linked nonspecific mental retardation. [provided by RefSeq, Jul 2008]

GDI1: a GDP dissociation inhibitor protein expressed primarily in neural and sensory tissues. GDP dissociation inhibitors are proteins that regulate the GDP-GTP exchange reaction of members of the Rab family, small GTP-binding proteins of the Ras superfamily, that are involved in vesicular trafficking of molecules between cellular organelles. GDIs slow the rate of dissociation of GDP from Rab proteins and release GDP from membrane-bound Rabs. Mutations have been linked to X-linked nonspecific mental retardation.

Protein type: Motility/polarity/chemotaxis; G protein regulator, misc.

Chromosomal Location of Human Ortholog: Xq28

Cellular Component: Golgi apparatus; neuron projection; protein complex; cytoplasm; midbody; cytosol

Molecular Function: protein binding; GDP-dissociation inhibitor activity; Rab GDP-dissociation inhibitor activity; GTPase activator activity; Rab GTPase binding

Biological Process: protein transport; regulation of small GTPase mediated signal transduction; small GTPase mediated signal transduction; negative regulation of axonogenesis; response to calcium ion; Rab protein signal transduction; signal transduction; positive regulation of GTPase activity

Disease: Mental Retardation, X-linked 41