Ribonuclease J

UniProtKB accession:  P56185

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UniProtKB description:  An RNase that has 5'-3' exoribonuclease and endoribonuclease activity. Degrades 5'-monophosphorylated ssRNA and dsRNA, considerably more active on ssRNA. Association with RhpA significantly increases the dsRNase activity. Degrades RNA substrate with hairpin structures at both ends with low activity, but presence of RhpA significantly increases the activity on this substrate. Stimulates ATPase activity of RNA helicase RhpA. Involved in stabilization of mRNA but apparently not rRNA.