ADP-ribosylation factor-binding protein GGA3 Golgi-localized, gamma ear-containing, ARF-binding protein 3 GGA3 Synonyms: KIAA0154

GGA3 (also known as ADP-ribosylation factor binding protein GGA3, Golgi-localized, g-ear-containing, ARF-binding protein 3, Gamma-adaptin related protein 3) plays a role in protein sorting and trafficking between the trans-Golgi network (TGN) and endosomes. This protein mediates the ARF-dependent recruitment of clathrin to the TGN and binds ubiquitinated proteins and membrane cargo molecules with a cytosolic acidic cluster-dileucine (AC-LL) motif. GGA1 is a monomeric protein that interacts with SORT1, SORL1, LRP3, GGA binding partner (GGABP) and P200, GGA1 and GGA2 as well as RABEP1, RABGEF1 and type-I membrane proteins M6PR/CD-MPR, IGF2R/CI-MPR and BACE1. GGA3 is a ubiquitously expressed membrane-associated protein that is localized to TGN and endosomes. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene.