This domain is found in Golgi associated RAB2 interactor proteins and it is likely a Rab2B-binding domain [1-3]. Some members included in this entry, such as GAR1A/B and GAR2, are RAB2B effector proteins required for accurate acrosome formation and normal male fertility [1,3]. GARI-L4 is a RAB2B effector protein required for the compacted Golgi morphology [2]. GARIL5 is a Rab2B effector protein which promotes cytosolic DNA-induced innate immune responses [4].

1: The expression characteristics of FAM71D and its association with sperm motility. Ma Q, Li Y, Luo M, Guo H, Lin S, Chen J, Du Y, Jiang Z, Gui Y; Hum Reprod. 2017;32:2178-2187. PMID:29025071

2: Small GTPase Rab2B and Its Specific Binding Protein Golgi-associated Rab2B Interactor-like 4 (GARI-L4) Regulate Golgi Morphology. Aizawa M, Fukuda M; J Biol Chem. 2015;290:22250-22261. PMID:26209634

3: FAM71F1 binds to RAB2A and RAB2B and is essential for acrosome formation and male fertility in mice. Morohoshi A, Miyata H, Oyama Y, Oura S, Noda T, Ikawa M; Development. 2021; [Epub ahead of print] PMID:34714330

4: The RAB2B-GARIL5 Complex Promotes Cytosolic DNA-Induced Innate Immune Responses. Takahama M, Fukuda M, Ohbayashi N, Kozaki T, Misawa T, Okamoto T, Matsuura Y, Akira S, Saitoh T; Cell Rep. 2017;20:2944-2954. PMID:28930687