<p> This entry represents a conserved site for the ribonuclease II family. Proteins with this signature include characterised and related sequences to exoribonuclease II (RNase II) [<cite idref="PUB00045119"/>] and ribonuclease R, a bacterial 3' --> 5' exoribonuclease homologous to RNase II [<cite idref="PUB00015537"/>,<cite idref="PUB00017190"/>,<cite idref="PUB00017191"/>].</p>