in order to estimate the size of the active site of guanylic acid specific rnases ( rnase t1 from aspergillus oryzae and rnase st from streptomyces erythreus ) and guanine-preferential rnase ( rnase ms from a. saitoi ) , the depolymerization reaction of oligoinosinic acid , ( ip ) ni greater than p , having various chain lengths was studied .
C0018364
rnase t1
C0014241
rnase