Viswamitra, MA and Post, ML and Kennard, O (1979) The crystal structure of the dipotassium salt of uridine 5'-diphosphate. In: Acta Crystallographica Section B, 35 . pp. 1089-1094.
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C9H12N2Ot2P22-. 2K + .3H20 is orthorhombic, P2~2~2p with a = 18.977 (5), b - 22.597 (6), c = 8.995 (2) A, Z = 8. The structure was refined to R = 0.059 for 2587 observed reflexions. The two molecules of the asymmetric unit have very similar conformations with a 2'- endo sugar pucker and a folded pyrophosphate chain. They form a dimer, coordinated by the K + ions but without direct bridging between the base and the pyrophosphate within each individual molecule. One uracil base has the keto-enol and the other the diketo form. The extended structure shows alternating hydrophobic and hydrophilic regions.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to International Union of Crystallography.|
|Department/Centre:||Division of Biological Sciences > Microbiology & Cell Biology
Division of Physical & Mathematical Sciences > Physics
|Date Deposited:||15 Dec 2010 04:46|
|Last Modified:||08 Jul 2011 07:53|
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