Nucleic Acid Standards
Sugar and Phosphate Constituents
Bond Lengths and Angles in the Phosphodiester Linkage in Dinucleoside Monophosphates and Trinucleoside Diphosphates
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bond mean esd N
value
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P-O1P/O2P 1.485 (0.017, 30)
P-O3' 1.607 (0.012, 13)
P-O5' 1.593 (0.010, 15)
(P)O5'-C5' 1.440 (0.016, 14)
(P)O3'-C3' 1.433 (0.019, 13)
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angle mean esd N
value
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O1P-P-O2P 119.6 (1.5, 15)
O5'-P-O1P/O2P large* 110.7 (1.2, 16)
O5'-P-O1P/O2P small** 105.7 (0.9, 16)
O3'-P-O5' 104.0 (1.9, 13)
P-O5'-C5' 120.9 (1.6, 15)
C3'-O3'-P 119.7 (1.2, 13)
O3'-P-O1P/O2P large* 110.5 (1.1, 13)
O3'-P-O1P/O2P small** 105.2 (2.2, 13)
(P)O5'-C5'-C4' 109.4 (0.8, 14)
(P)O3'-C3'-C4' 109.3 (1.5, 13)
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*Geometries for the subset with large Ox-P-O1P/O2P angles,
where x = 3' or 5'.
**Geometries for the subset with small Ox-P-O1P/O2P angles,
where x = 3' or5'.