YPR095C SYT1 SGDID:S000006299, Chr XVI from 724717-721037, Genome Release 64-1-1, reverse complement, Verified ORF, "Guanine nucleotide exchange factor (GEF) for Arf proteins; promotes activation of Arl1p, which recruits Imh1p to the Golgi; involved in vesicular transport; member of the Sec7-domain family; contains a PH domain"