Rab3 GTPase-activating protein non-catalytic subunit

Definition

Regulatory subunit of the Rab3 GTPase-activating (Rab3GAP) complex composed of RAB3GAP1 and RAB3GAP2, which has GTPase-activating protein (GAP) activity towards various Rab3 subfamily members (RAB3A, RAB3B, RAB3C and RAB3D), RAB5A and RAB43, and guanine nucleotide exchange factor (GEF) activity towards RAB18. As part of the Rab3GAP complex, acts as a GAP for Rab3 proteins by converting active RAB3-GTP to the inactive form RAB3-GDP (By similarity). Rab3 proteins are involved in regulated exocytosis of neurotransmitters and hormones (By similarity). The Rab3GAP complex, acts as a GEF for RAB18 by promoting the conversion of inactive RAB18-GDP to the active form RAB18-GTP. Required for recruiting and activating RAB18 at the endoplasmic reticulum (ER) membrane where it maintains proper ER structure. Required for normal eye and brain development (By similarity). May participate in neurodevelopmental processes such as proliferation, migration and differentiation before synapse formation, and non-synaptic vesicular release of neurotransmitters (By similarity).

References:

[1]. Andreas Gerondopoulos, et al. Rab18 and a Rab18 GEF complex are required for normal ER structure. J Cell Biol. 2014 Jun 9;205(5):707-20. [Content Brief]

[2]. F Nagano, et al. Molecular cloning and characterization of the noncatalytic subunit of the Rab3 subfamily-specific GTPase-activating protein. J Biol Chem. 1998 Sep 18;273(38):24781-5. [Content Brief]

生物医学辞典

生物医学辞典は、生物学の学術用語と専門データの包括的で専門的なデータベースです。すべての説明は、権威ある書籍や高いＩＦの文献に基づいており、知りたい生物医学用語の正確な説明を得ることができます。

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

お名前
メール *

	Sorry, but the email address you supplied was invalid.