IUBMB Enzyme Nomenclature


Accepted name: double-stranded RNA adenine deaminase

Reaction: adenine in double-stranded RNA + H2O = hypoxanthine in double-stranded RNA + NH3

Other name(s): ADAR; double-stranded RNA adenosine deaminase; dsRAD; dsRNA adenosine deaminase; DRADA1; double-stranded RNA-specific adenosine deaminase

Systematic name: double-stranded RNA adenine aminohydrolase

Comments: This eukaryotic enzyme is involved in RNA editing. It destabilizes double-stranded RNA through conversion of adenosine to inosine. Inositol hexakisphosphate is required for activity [4].

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number:


1. Hough, R.F. and Bass, B.L. Purification of the Xenopus laevis double-stranded RNA adenosine deaminase. J. Biol. Chem. 269 (1994) 9933-9939. [PMID: 8144588]

2. O'Connell, M.A., Gerber, A. and Keegan, L.P. Purification of native and recombinant double-stranded RNA-specific adenosine deaminases. Methods 15 (1998) 51-62. [PMID: 9614652]

3. Wong, S.K., Sato, S. and Lazinski, D.W. Substrate recognition by ADAR1 and ADAR2. RNA 7 (2001) 846-858. [PMID: 11421361]

4. Macbeth, M.R., Schubert, H.L., Vandemark, A.P., Lingam, A.T., Hill, C.P. and Bass, B.L. Inositol hexakisphosphate is bound in the ADAR2 core and required for RNA editing. Science 309 (2005) 1534-1539. [PMID: 16141067]

[EC created 2013]

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