obsolete ribonuclease G activity (obsolete GO:0008996)
OBSOLETE. Catalysis of the cleavage of single-stranded RNA that is monophosphorylated at its 5'-end; cleavage occurs predominantly at positions 5 and 6 nucleotides from the 5'-end and in A + U-rich regions, and is blocked by the presence of a 5'-triphosphate group.