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3E5C

Crystal Structure of the SMK box (SAM-III) Riboswitch with SAM

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
SMK box (SAM-III) Riboswitchpolymer5317402.31
2B, C, D, E, F...
(A)
STRONTIUM IONnon-polymer87.615Chemie (SR)
3Q
(A)
S-ADENOSYLMETHIONINEnon-polymer398.41Chemie (SAM)
4R
(A)
waterwater18.069Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight17402.3
Non-Polymers*Number of molecules16
Total formula weight1712.7
All*Total formula weight19115.1
*Water molecules are not included.

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PDB entries from 2025-06-18

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