{{Infobox enzyme | Name = Exoribonuclease II | EC_number = 3.1.13.1 | CAS_number = 37288-24-7 | GO_code = | image = | width = | caption = }} '''Exoribonuclease II''' ({{EC number|3.1.13.1}}, ''ribonuclease II'', ''ribonuclease Q'', ''BN ribonuclease'', ''Escherichia coli exo-RNase II'', ''RNase II'', ''exoribonuclease (misleading)'', ''5'-exoribonuclease'') is an enzyme.<ref>{{cite journal | vauthors = Nossal NG, Singer MF | title = The processive degradation of individual polyribonucleotide chains. I. Escherichia coli ribonuclease II | journal = The Journal of Biological Chemistry | volume = 243 | issue = 5 | pages = 913–22 | date = March 1968 | doi = 10.1016/S0021-9258(18)93603-3 | doi-access = free | pmid = 4867942 }}</ref><ref>{{cite journal | vauthors = Schmidt FJ, McClain WH | title = An Escherichia coli ribonuclease which removes an extra nucleotide from a biosynthetic intermediate of bacteriophage T4 proline transfer RNA | journal = Nucleic Acids Research | volume = 5 | issue = 11 | pages = 4129–39 | date = November 1978 | pmid = 364422 | pmc = 342738 | doi = 10.1093/nar/5.11.4129 }}</ref><ref>{{cite journal | vauthors = Shimura Y, Sakano H, Nagawa F | title = Specific ribonucleases involved in processing of tRNA precursors of Escherichia coli. Partial purification and some properties | journal = European Journal of Biochemistry | volume = 86 | issue = 1 | pages = 267–81 | date = May 1978 | pmid = 350582 | doi = 10.1111/j.1432-1033.1978.tb12308.x | doi-access = free }}</ref><ref>{{cite journal | vauthors = Sporn MB, Lazarus HM, Smith JM, Henderson WR | title = Studies on nuclear exoribonucleases. 3. Isolation and properties of the enzyme from normal and malignant tissues of the mouse | journal = Biochemistry | volume = 8 | issue = 4 | pages = 1698–706 | date = April 1969 | pmid = 5805304 | doi = 10.1021/bi00832a053 }}</ref> This enzyme catalyses the following chemical reaction
: Exonucleolytic cleavage in the 3'- to 5'-direction to yield nucleoside 5'-phosphates
This enzyme has preference for single-stranded RNA.
== See also == * 5'-3' exoribonuclease 2
== References == {{reflist}}
== External links == * {{MeshName|Exoribonuclease+II}}
{{Esterases}} {{Enzymes}} {{Portal bar|Biology|border=no}}
Category:EC 3.1.13