eF-site ID 1ykq-ABCD PDB Code 1ykq Chain A, B, C, D click to enlarge Title Crystal structure of Diels-Alder ribozyme Classification RNA Compound Diels-Alder ribozyme Source (1YKQ) Sequence A:  GGAGCUCGCCC B:  GGGCGAGGCCGUGCCAGCUCUUCGGAGCAAUACUCGGC C:  GGAGCUCGCCC D:  GGGCGAGGCCGUGCCAGCUCUUCGGAGCAAUACUCGGC Description Functional site 1) chain B residue 234 type sequence U description BINDING SITE FOR RESIDUE MG B 240 source : AC1 2) chain B residue 236 type sequence G description BINDING SITE FOR RESIDUE MG B 240 source : AC1 3) chain B residue 233 type sequence C description BINDING SITE FOR RESIDUE MG B 241 source : AC2 4) chain B residue 216 type sequence A description BINDING SITE FOR RESIDUE CD B 242 source : AC3 5) chain B residue 217 type sequence G description BINDING SITE FOR RESIDUE CD B 242 source : AC3 6) chain B residue 201 type sequence G description BINDING SITE FOR RESIDUE CD B 243 source : AC4 7) chain B residue 213 type sequence G description BINDING SITE FOR RESIDUE MG B 246 source : AC5 8) chain D residue 213 type sequence G description BINDING SITE FOR RESIDUE MG B 246 source : AC5 9) chain A residue 101 type sequence G description BINDING SITE FOR RESIDUE CD A 249 source : AC6 10) chain D residue 234 type sequence U description BINDING SITE FOR RESIDUE MG D 340 source : AC7 11) chain D residue 233 type sequence C description BINDING SITE FOR RESIDUE MG D 341 source : AC8 12) chain D residue 216 type sequence A description BINDING SITE FOR RESIDUE CD D 342 source : AC9 13) chain D residue 201 type sequence G description BINDING SITE FOR RESIDUE CD D 343 source : BC1 14) chain D residue 225 type sequence G description BINDING SITE FOR RESIDUE MG D 348 source : BC2 15) chain C residue 101 type sequence G description BINDING SITE FOR RESIDUE MG C 349 source : BC3

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