FEATURES

FAMILY

DESCRIPTION

Also known as TGFA1_HUMAN, TGFBRAP1. Plays a role in the TGF-beta/activin signaling pathway. It associates with inactive heteromeric TGF-beta and activin receptor complexes, mainly through the type II receptor, and is released upon activation of signaling. May recruit SMAD4 to the vicinity of the receptor complex and facilitate its interaction with receptor-regulated Smads, such as SMAD2., Plays a role in vesicle-mediated protein trafficking of the endocytic membrane transport pathway. Believed to act as a component of the putative CORVET endosomal tethering complexes which is proposed to be involved in the Rab5-to-Rab7 endosome conversion probably implicating MON1A/B, and via binding SNAREs and SNARE complexes to mediate tethering and docking events during SNARE-mediated membrane fusion. The CORVET complex is proposed to function as a Rab5 effector to mediate early endosome fusion probably in specific endosome subpopulations (PubMed:25266290). Functions predominantly in APPL1-containing endosomes and in degradative but not recycling trafficking of endocytosed cargo (PubMed:25266290). Interacts with TGFBR2 and ACVR2B; in the absence of ligand stimulation. Interacts with TGFBR1, ACVRL1, BMPR1A and ACVR1B; in the absence of ligand stimulation and to a less extent. Interacts with SMAD4; the interaction seems to be mutually exclusive with the interaction of SMAD4 and phosphorylated SMAD2 (PubMed:9545258, PubMed:11278302). May interact with ALOX5 (PubMed:10051563). Interacts with RAB5C (By similarity). Interacts with VPS8, VPS11 and VPS16. Component of the putative class C core vacuole/endosome tethering (CORVET) complex; the core of which composed of the class C Vps proteins VPS11, VPS16, VPS18 and VPS33A, is associated with VPS8 and TGFBRAP1 (PubMed:25266290).

EXTERNAL LINKS

TGFBRAP1

Transforming growth factor-beta receptor-associated protein 1

TGFBRAP1

Molecular Synopsis