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3OVA

How the CCA-adding Enzyme Selects Adenine over Cytosine in Position 76 of tRNA

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
CCA-adding enzymepolymer43551208.81UniProt (A0A101DCH0)
Pfam (PF01909)
Pfam (PF09249)
Pfam (PF21133)
Archaeoglobus fulgidusCCA tRNA nucleotidyltransferase,tRNA CCA-pyrophosphorylase,tRNA adenylyl-/cytidylyl- transferase,tRNA nucleotidyltransferase,tRNA-NT
2B
(C)
RNA (34-MER)polymer3410837.41Synthetic construct
3C
(A)
DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTERnon-polymer505.21Chemie (APC)
4D
(A)
SULFATE IONnon-polymer96.11Chemie (SO4)
5E
(A)
MAGNESIUM IONnon-polymer24.31Chemie (MG)
6F, G, H
(A)
1,2-ETHANEDIOLnon-polymer62.13Chemie (EDO)
7I, J
(A, C)
waterwater18.0219Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight62046.2
Non-Polymers*Number of molecules6
Total formula weight811.8
All*Total formula weight62858.0
*Water molecules are not included.

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PDB entries from 2025-06-18

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