Exoribonuclease II

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Exoribonuclease II
EC number
CAS number 37288-24-7
IntEnz IntEnz view
ExPASy NiceZyme view
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Exoribonuclease II (EC, ribonuclease II, ribonuclease Q, BN ribonuclease, Escherichia coli exo-RNase II, RNase II, exoribonuclease (misleading), 5'-exoribonuclease) is an enzyme.[1][2][3][4] 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[edit]


  1. ^ Nossal, N.G.; Singer, M. (1968). "The processive degradation of individual polyribonucleotide chains. I. Escherichia coli ribonuclease II". J. Biol. Chem. 243: 913–922. PMID 4867942. 
  2. ^ Schmidt, F.J.; McClain, W.H. (1978). "An Escherichia coli ribonuclease which removes an extra nucleotide from a biosynthetic intermediate of bacteriophage T4 proline transfer RNA". Nucleic Acids Res. 5: 4129–4139. doi:10.1093/nar/5.11.4129. PMC 342738Freely accessible. PMID 364422. 
  3. ^ Shimura, Y.; Sakano, H.; Nagawa, F. (1978). "Specific ribonucleases involved in processing of tRNA precursors of Escherichia coli. Partial purification and some properties". Eur. J. Biochem. 86: 267–281. doi:10.1111/j.1432-1033.1978.tb12308.x. PMID 350582. 
  4. ^ Sporn, M.B.; Lazarus, H.M.; Smith, J.M.; Henderson, W.R. (1969). "Studies on nuclear exoribonucleases. 3. Isolation and properties of the enzyme from normal and malignant tissues of the mouse". Biochemistry. 8: 1698–1706. doi:10.1021/bi00832a053. PMID 5805304. 

External links[edit]