이 유전자는 RAB 게라닐게라닐전달효소 홀로엔자임 성분 A를 코드한다.이합체 홀로엔자임에서 이 서브유닛은 비레닐화 Rab GTPase를 결합시킨 후 이를 촉매 Rab GGTase 서브유닛에 제시하여 제라닐게라닐 전이반응을 일으킨다.Rab GTPases는 정확한 세포 내 [6]막에 국재하기 위해 C 말단에 있는 하나 또는 두 개의 시스테인 잔기에 게라닐제라닐화되어야 한다.
^Rak A, Pylypenko O, Niculae A, Goody RS, Alexandrov K (Jan 2003). "Crystallization and preliminary X-ray diffraction analysis of monoprenylated Rab7 GTPase in complex with Rab escort protein 1". J. Struct. Biol. 141 (1): 93–5. doi:10.1016/S1047-8477(02)00634-2. PMID12576024.
^Alexandrov K, Simon I, Iakovenko A, Holz B, Goody RS, Scheidig AJ (Apr 1998). "Moderate discrimination of REP-1 between Rab7 x GDP and Rab7 x GTP arises from a difference of an order of magnitude in dissociation rates". FEBS Lett. 425 (3): 460–4. doi:10.1016/S0014-5793(98)00290-7. PMID9563513. S2CID39125409.
^Pereira-Leal JB, Strom M, Godfrey RF, Seabra MC (Jan 2003). "Structural determinants of Rab and Rab Escort Protein interaction: Rab family motifs define a conserved binding surface". Biochem. Biophys. Res. Commun. 301 (1): 92–7. doi:10.1016/S0006-291X(02)02963-7. PMID12535645.
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