[English] 日本語
Yorodumi
- PDB-8d33: Human mitochondrial DNA polymerase gamma ternary complex with GC ... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 8d33
TitleHuman mitochondrial DNA polymerase gamma ternary complex with GC basepair
Components
  • (DNA polymerase subunit gamma- ...) x 2
  • DNA (25-MER)
  • DNA (5'-D(P*AP*AP*AP*AP*CP*GP*AP*CP*GP*GP*CP*CP*AP*GP*TP*GP*CP*CP*AP*TP*AP*C)-3')
KeywordsTRANSFERASE/DNA / DNA-binding protein / DNA polymerase / TRANSFERASE-DNA complex
Function / homology
Function and homology information


gamma DNA polymerase complex / 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 ...gamma DNA polymerase complex / 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 / DNA-templated DNA replication / double-stranded DNA binding / in utero embryonic development / protease binding / 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
DNA-directed DNA-polymerase, family A, mitochondria / DNA mitochondrial polymerase, exonuclease domain / : / DNA mitochondrial polymerase exonuclease domain / POLG2, C-terminal / Glycyl-tRNA synthetase/DNA polymerase subunit gamma-2 / Anticodon-binding / Anticodon binding domain / DNA-directed DNA polymerase, family A, conserved site / DNA polymerase family A signature. ...DNA-directed DNA-polymerase, family A, mitochondria / DNA mitochondrial polymerase, exonuclease domain / : / DNA mitochondrial polymerase exonuclease domain / POLG2, C-terminal / Glycyl-tRNA synthetase/DNA polymerase subunit gamma-2 / Anticodon-binding / Anticodon binding domain / DNA-directed DNA polymerase, family A, conserved site / DNA polymerase family A signature. / DNA-directed DNA polymerase, family A, palm domain / DNA polymerase A domain / Anticodon-binding domain superfamily / Class II Aminoacyl-tRNA synthetase/Biotinyl protein ligase (BPL) and lipoyl protein ligase (LPL) / Ribonuclease H-like superfamily / DNA/RNA polymerase superfamily
Similarity search - Domain/homology
2'-DEOXYCYTIDINE-5'-TRIPHOSPHATE / DNA / DNA (> 10) / DNA polymerase subunit gamma-1 / DNA polymerase subunit gamma-2
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.46 Å
AuthorsPark, J. / Yin, Y.W.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI134611 United States
CitationJournal: Nat Struct Mol Biol / Year: 2023
Title: Polγ coordinates DNA synthesis and proofreading to ensure mitochondrial genome integrity.
Authors: Joon Park / Geoffrey K Herrmann / Patrick G Mitchell / Michael B Sherman / Y Whitney Yin /
Abstract: Accurate replication of mitochondrial DNA (mtDNA) by DNA polymerase γ (Polγ) is essential for maintaining cellular energy supplies, metabolism, and cell cycle control. To illustrate the structural ...Accurate replication of mitochondrial DNA (mtDNA) by DNA polymerase γ (Polγ) is essential for maintaining cellular energy supplies, metabolism, and cell cycle control. To illustrate the structural mechanism for Polγ coordinating polymerase (pol) and exonuclease (exo) activities to ensure rapid and accurate DNA synthesis, we determined four cryo-EM structures of Polγ captured after accurate or erroneous incorporation to a resolution of 2.4-3.0 Å. The structures show that Polγ employs a dual-checkpoint mechanism to sense nucleotide misincorporation and initiate proofreading. The transition from replication to error editing is accompanied by increased dynamics in both DNA and enzyme, in which the polymerase relaxes its processivity and the primer-template DNA unwinds, rotates, and backtracks to shuttle the mismatch-containing primer terminus 32 Å to the exo site for editing. Our structural and functional studies also provide a foundation for analyses of Polγ mutation-induced human diseases and aging.
History
DepositionMay 31, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 24, 2023Provider: repository / Type: Initial release
Revision 1.1May 31, 2023Group: Database references / Category: citation / Item: _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Jul 5, 2023Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: DNA polymerase subunit gamma-1
B: DNA polymerase subunit gamma-2, mitochondrial
C: DNA polymerase subunit gamma-2, mitochondrial
P: DNA (5'-D(P*AP*AP*AP*AP*CP*GP*AP*CP*GP*GP*CP*CP*AP*GP*TP*GP*CP*CP*AP*TP*AP*C)-3')
T: DNA (25-MER)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)268,7097
Polymers268,2025
Non-polymers5072
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

-
Components

-
DNA polymerase subunit gamma- ... , 2 types, 3 molecules ABC

#1: Protein DNA polymerase subunit gamma-1 / / Mitochondrial DNA polymerase catalytic subunit / PolG-alpha


Mass: 140559.547 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: POLG, MDP1, POLG1, POLGA
Production host: Insect cell expression vector pTIE1 (others)
References: UniProt: P54098, DNA-directed DNA polymerase
#2: Protein DNA polymerase subunit gamma-2, mitochondrial / / DNA polymerase gamma accessory 55 kDa subunit / p55 / Mitochondrial DNA polymerase accessory ...DNA polymerase gamma accessory 55 kDa subunit / p55 / Mitochondrial DNA polymerase accessory subunit / MtPolB / PolG-beta


Mass: 55819.867 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: POLG2, MTPOLB
Production host: Insect cell expression vector pTIE1 (others)
References: UniProt: Q9UHN1

-
DNA chain , 2 types, 2 molecules PT

#3: DNA chain DNA (5'-D(P*AP*AP*AP*AP*CP*GP*AP*CP*GP*GP*CP*CP*AP*GP*TP*GP*CP*CP*AP*TP*AP*C)-3')


Mass: 7357.771 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#4: DNA chain DNA (25-MER)


Mass: 8644.536 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

-
Non-polymers , 2 types, 2 molecules

#5: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca / Feature type: SUBJECT OF INVESTIGATION
#6: Chemical ChemComp-DCP / 2'-DEOXYCYTIDINE-5'-TRIPHOSPHATE / Deoxycytidine triphosphate


Mass: 467.157 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C9H16N3O13P3 / Feature type: SUBJECT OF INVESTIGATION

-
Details

Has ligand of interestY

-
Experimental details

-
Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

-
Sample preparation

ComponentName: Human mitochondrial DNA polymerase gamma ternary complex with GC basepair
Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Insect cell expression vector pTIE1 (others)
Buffer solutionpH: 7.2
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R2/1
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE

-
Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 105000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 1500 nm / Cs: 2.7 mm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

-
Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
EM software
IDNameVersionCategory
4cryoSPARC3.3.2CTF correction
9cryoSPARC3.3.2initial Euler assignment
10cryoSPARC3.3.2final Euler assignment
12cryoSPARC3.3.23D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 2.46 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 4494991 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00215754
ELECTRON MICROSCOPYf_angle_d0.46221553
ELECTRON MICROSCOPYf_dihedral_angle_d13.0225902
ELECTRON MICROSCOPYf_chiral_restr0.0382322
ELECTRON MICROSCOPYf_plane_restr0.0032605

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more