GRP GI:60498997 gastrin-releasing peptide isoform 2 preproprotein 1 mrgrelplvl lalvlclapr gravplpagg gtvltkmypr gnhwavghlm 50 51 gkkstgesss vsergslkqq lreyirweea arnllgliea kenrnhqppq 100 101 pkalgnqqps wdsedssnfk dvgskgkgsq regrnpqlnq q