PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 14709332-4 2004 These ATRA-induced events are independent on the guanine nucleotide exchange activity of Vav. Guanine Nucleotides 49-67 vav guanine nucleotide exchange factor 1 Homo sapiens 89-92