. "\"Catalysis of the hydrolysis of ester linkages within ribonucleic acids by creating internal breaks to yield 3'-phosphomonoesters.\" [GOC:ai]" . . "endoribonuclease activity, producing 3'-phosphomonoesters" . "endoribonuclease activity, producing other than 5'-phosphomonoesters" . "EC:3.1.27" . . . . . . . . . . . .