Strong n-x stacking interaction between the indole ring and 7-methylguanine base was shown by X-ray crystal analysis of the 7-methylguanosine S-monophosphate-tryptamine complex. This interaction appears to be strengthened by the attachment of ribose and phosphate groups to the base.
7-Methylguanosine 5'-monophosphateTryptamine X-ray analysis n-n stacking interaction Crystal structure
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