RNAS4_RAT RL3 Rnase4 MDIQRTQSLLLLLLLTLLGLGLVQPSYGQDRMYQRFLRQHVDPEGTGGSDNYCNVMMQRRRMTSTQCKRFNTFIHEDIWNIRSICDTANIPCKNGNMNCHEGIVRVTDCRETGSSVPHNCRYRARASTRRVVIACEGTPEVPVHFDR 147 Ribonuclease 4 This RNase has marked specificity towards the 3' side of uridine nucleotides.