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8K0T

Crystal structure of theophylline DNA aptamer bound to theophylline

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
DNA (29-MER)polymer298918.71synthetic construct
2B
(A)
THEOPHYLLINEnon-polymer180.21Chemie (TEP)
3C
(A)
POTASSIUM IONnon-polymer39.11Chemie (K)
4D
(A)
IODIDE IONnon-polymer126.91Chemie (IOD)
5E
(A)
SODIUM IONnon-polymer23.01Chemie (NA)
6F
(A)
waterwater18.05Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight8918.7
Non-Polymers*Number of molecules4
Total formula weight369.2
All*Total formula weight9287.9
*Water molecules are not included.

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PDB entries from 2026-01-21

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