APRT GI:4502171 adenine phosphoribosyltransferase isoform a 1 madselqlve qrirsfpdfp tpgvvfrdis pvlkdpasfr aaigllarhl 50 51 kathggridy iagldsrgfl fgpslaqelg lgcvlirkrg klpgptlwas 100 101 ysleygkael eiqkdalepg qrvvvvddll atggtmnaac ellgrlqaev 150 151 lecvslvelt slkgreklap vpffsllqye