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3KGD

Crystal structure of E. coli RNA 3' cyclase

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C, D
(A, B, C, D)
RNA 3'-terminal phosphate cyclasepolymer35838344.64UniProt (P46849)
Pfam (PF01137)
Pfam (PF05189)
Escherichia coliRNA-3'-phosphate cyclase, RNA cyclase
2E, L, R, Z
(A, B, C, D)
ADENOSINE MONOPHOSPHATEnon-polymer347.24Chemie (AMP)
3AA, BA, CA, F, G...
(D, A, B, C)
GLYCEROLnon-polymer92.110Chemie (GOL)
4DA, H, O, V, W
(D, A, B, C)
SODIUM IONnon-polymer23.05Chemie (NA)
5EA, I, J, K, P...
(D, A, B, C)
SULFATE IONnon-polymer96.18Chemie (SO4)
6FA, GA, HA, IA
(A, B, C, D)
waterwater18.01508Chemie (HOH)
Sequence modifications
A, B, C, D: 2 - 339 (UniProt: P46849)
PDBExternal DatabaseDetails
Gly -18-expression tag
His -17-expression tag
His -16-expression tag
His -15-expression tag
His -14-expression tag
His -13-expression tag
His -12-expression tag
His -11-expression tag
His -10-expression tag
His -9-expression tag
His -8-expression tag
Ser -7-expression tag
Ser -6-expression tag
Gly -5-expression tag
His -4-expression tag
Ile -3-expression tag
Glu -2-expression tag
Gly -1-expression tag
Arg 0-expression tag
His 1-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight153378.5
Non-Polymers*Number of molecules27
Total formula weight3193.3
All*Total formula weight156571.8
*Water molecules are not included.

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PDB entries from 2025-07-02

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