PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10608818-1 1999 Sec7 domains catalyze the replacement of GDP by GTP on the G protein ADP-ribosylation factor 1 (myrARF1) by interacting with its switch I and II regions and by destabilizing, through a glutamic finger, the beta-phosphate of the bound GDP. beta-phosphate 206-220 cytohesin 1 Homo sapiens 0-4