Naming of phosphate oxygens in nucleotides

Ton Rullmann rull at
Thu Nov 23 10:43:34 EST 1995

A draft-proposal "Recommendations for presentations of NMR structures of
proteins and nucleic acids", prepared by a IUPAC-IUBMB-IUPAB Interunion
Task Group says:

The phosphorus-bound oxygens are named O3', O5', OP1 and OP2, such that, when
looking down the O3'-P bond, the clockwise order of atoms is: O5', OP1, OP2.

The proposal refers to the recommendations published in
Eur. J. Biochem. (1982) 131: 9-15.
but possibly the statement given above is not from that paper (I did not

Ton Rullmann

J.A.C. Rullmann       
Bijvoet Center for Biomolecular Research          E-mail : rull at
Utrecht University, Padualaan 8,                   Phone : int+31.30.2533641
3584 CH Utrecht, the Netherlands                   Fax   : int+31.30.2537623
                         NOTE: phone numbers have changed - insert a 2

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