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Open data
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Basic information
Entry | Database: PDB / ID: 8udk | |||||||||
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Title | Human Mitochondrial DNA Polymerase gamma R853A Ternary Complex | |||||||||
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![]() | TRANSFERASE/DNA / Mitochondrial / DNA Polymerase / TRANSFERASE / TRANSFERASE-DNA complex | |||||||||
Function / homology | ![]() gamma DNA polymerase complex / mitochondrial chromosome / mitochondrial DNA replication / positive regulation of DNA-directed DNA polymerase activity / DNA replication proofreading / single-stranded DNA 3'-5' DNA exonuclease activity / Hydrolases; Acting on ester bonds; Exodeoxyribonucleases producing 5'-phosphomonoesters / DNA metabolic process / DNA polymerase processivity factor activity / mitochondrial nucleoid ...gamma DNA polymerase complex / mitochondrial chromosome / mitochondrial DNA replication / positive regulation of DNA-directed DNA polymerase activity / DNA replication proofreading / single-stranded DNA 3'-5' DNA exonuclease activity / Hydrolases; Acting on ester bonds; Exodeoxyribonucleases producing 5'-phosphomonoesters / DNA metabolic process / DNA polymerase processivity factor activity / mitochondrial nucleoid / Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases / 5'-deoxyribose-5-phosphate lyase activity / DNA polymerase binding / base-excision repair, gap-filling / 3'-5' exonuclease activity / Transcriptional activation of mitochondrial biogenesis / base-excision repair / DNA-templated DNA replication / double-stranded DNA binding / protease binding / in utero embryonic development / DNA-directed DNA polymerase / DNA-directed DNA polymerase activity / mitochondrial matrix / intracellular membrane-bounded organelle / chromatin binding / protein-containing complex / mitochondrion / DNA binding / identical protein binding / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() synthetic construct (others) | |||||||||
Method | ![]() ![]() ![]() | |||||||||
![]() | Park, J. / Herrmann, G.K. / Yin, Y.W. | |||||||||
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![]() | ![]() Title: An interaction network in the polymerase active site is a prerequisite for Watson-Crick base pairing in Pol γ. Authors: Joon Park / Geoffrey K Herrmann / Arkanil Roy / Christie K Shumate / G Andrés Cisneros / Y Whitney Yin / ![]() Abstract: The replication accuracy of DNA polymerase gamma (Pol γ) is essential for mitochondrial genome integrity. Mutation of human Pol γ arginine-853 has been linked to neurological diseases. Although not ...The replication accuracy of DNA polymerase gamma (Pol γ) is essential for mitochondrial genome integrity. Mutation of human Pol γ arginine-853 has been linked to neurological diseases. Although not a catalytic residue, Pol γ arginine-853 mutants are void of polymerase activity. To identify the structural basis for the disease, we determined a crystal structure of the Pol γ mutant ternary complex with correct incoming nucleotide 2'-deoxycytidine 5'-triphosphate (dCTP). Opposite to the wild type that undergoes open-to-closed conformational changes when bound to a correct nucleotide that is essential for forming a catalytically competent active site, the mutant complex failed to undergo the conformational change, and the dCTP did not base pair with its Watson-Crick complementary templating residue. Our studies revealed that arginine-853 coordinates an interaction network that aligns the 3'-end of primer and dCTP with the catalytic residues. Disruption of the network precludes the formation of Watson-Crick base pairing and closing of the active site, resulting in an inactive polymerase. | |||||||||
History |
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Structure viewer | Molecule: ![]() ![]() |
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-Validation report
Summary document | ![]() | 801 KB | Display | ![]() |
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Full document | ![]() | 830.4 KB | Display | |
Data in XML | ![]() | 62.7 KB | Display | |
Data in CIF | ![]() | 84.1 KB | Display | |
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-Related structure data
Related structure data | ![]() 8udlC C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Assembly
Deposited unit | ![]()
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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Ens-ID: ens_1
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