PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 24501423-1 2014 As early endosomes mature, the SAND-1/CCZ-1 complex acts as a guanine nucleotide exchange factor (GEF) for RAB-7 to promote the activity of its effector, HOPS, which facilitates late endosome-lysosome fusion and the consumption of AP-3-containing vesicles. 3-aminopropyltrimethoxysilane 231-235 RAB family Caenorhabditis elegans 107-112