tgfbr1.S( African Clawed Frog ) Entrez Gene 399295 Entrez Gene 399295 transforming growth factor beta receptor I S homeolog Alias TrR-1|aat5|acvrlk4|alk-5|alk5|lds1a|lds2a|skr4|tgfbr1|tgfr-1|x-trr1|xTrR-1