3ovb

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

Structural highlights

3ovb is a 4 chain structure with sequence from Archaeoglobus fulgidus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.95Å
Ligands:, , , ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CCA_ARCFU Catalyzes the addition and repair of the essential 3'-terminal CCA sequence in tRNAs without using a nucleic acid template. Adds these three nucleotides in the order of C, C, and A to the tRNA nucleotide-73, using CTP and ATP as substrates and producing inorganic pyrophosphate.[1]

See Also

References

  1. Okabe M, Tomita K, Ishitani R, Ishii R, Takeuchi N, Arisaka F, Nureki O, Yokoyama S. Divergent evolutions of trinucleotide polymerization revealed by an archaeal CCA-adding enzyme structure. EMBO J. 2003 Nov 3;22(21):5918-27. PMID:14592988 doi:http://dx.doi.org/10.1093/emboj/cdg563

3ovb, resolution 1.95Å

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OCA