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- PDB-8hwg: D5 ATPrS-ADP-ssDNA form -

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Basic information

Entry
Database: PDB / ID: 8hwg
TitleD5 ATPrS-ADP-ssDNA form
Components
  • DNA (5'-D(P*TP*TP*TP*TP*TP*T)-3')
  • Primase D5
KeywordsVIRAL PROTEIN / MPVX
Function / homology
Function and homology information


helicase activity / hydrolase activity / ATP binding
Similarity search - Function
DNA primase/nucleoside triphosphatase, C-terminal / Poxvirus D5 protein-like / Bacteriophage/plasmid primase, P4, C-terminal / D5 N terminal like / Helicase, superfamily 3, DNA virus / Superfamily 3 helicase of DNA viruses domain profile. / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / DNA / Uncoating factor OPG117
Similarity search - Component
Biological speciesMonkeypox virus
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å
AuthorsLi, Y.N. / Zhu, J. / Guo, Y.Y. / Yan, R.H.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)82202517 China
CitationJournal: Nat Struct Mol Biol / Year: 2024
Title: Structural insight into the assembly and working mechanism of helicase-primase D5 from Mpox virus.
Authors: Yaning Li / Jing Zhu / Yingying Guo / Renhong Yan /
Abstract: The Mpox pandemic, caused by the Mpox virus (or monkeypox virus, MPXV), has gained global attention. The D5 protein, a putative helicase-primase found in MPXV, plays a vital role in viral replication ...The Mpox pandemic, caused by the Mpox virus (or monkeypox virus, MPXV), has gained global attention. The D5 protein, a putative helicase-primase found in MPXV, plays a vital role in viral replication and genome uncoating. Here we determined multiple cryo-EM structures of full-length hexameric D5 in diverse states. These states were captured during ATP hydrolysis while moving along the single-stranded DNA (ssDNA) track. Through comprehensive structural analysis combined with the helicase activity system, we revealed that when the primase domain is truncated or the interaction between the primase and helicase domains is disrupted, the double-stranded DNA (dsDNA) unwinds into ssDNA, suggesting a critical regulatory role of the primase domain. Two transition states bound with ssDNA substrate during unwinding reveals that two ATP molecules were consumed to drive DNA moving forward two nucleotides. Collectively, our findings shed light on the molecular mechanism that links ATP hydrolysis to the DNA unwinding in poxviruses.
History
DepositionDec 29, 2022Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Jan 10, 2024Provider: repository / Type: Initial release
Revision 1.1Jan 17, 2024Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.name
Revision 1.2Jan 31, 2024Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
C: Primase D5
B: Primase D5
D: Primase D5
A: Primase D5
F: Primase D5
E: Primase D5
S: DNA (5'-D(P*TP*TP*TP*TP*TP*T)-3')
hetero molecules


Theoretical massNumber of molelcules
Total (without water)547,73119
Polymers544,6387
Non-polymers3,09312
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
Primase D5


Mass: 90476.344 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Monkeypox virus
Gene: E5R, MPXV-COP-096, MPXV-M2940_FCT-100, MPXV-M2957_Lagos-100, MPXV-M3021_Delta-100, MPXV-M5320_M15_Bayelsa-093, MPXV-Nig_SEV71_2_82-095, MPXV-PCH-097, MPXV-Singapore-100, MPXV-SL-096, MPXV-UK_P1- ...Gene: E5R, MPXV-COP-096, MPXV-M2940_FCT-100, MPXV-M2957_Lagos-100, MPXV-M3021_Delta-100, MPXV-M5320_M15_Bayelsa-093, MPXV-Nig_SEV71_2_82-095, MPXV-PCH-097, MPXV-Singapore-100, MPXV-SL-096, MPXV-UK_P1-100, MPXV-UK_P2-100, MPXV-UK_P3-100, MPXV-USA2003_099_GR-100, MPXV-USA2003_206_DM-100, MPXV-USA2003_223_RS-100, MPXV-UTC-091, MPXV-W_Nigeria-095, MPXV-WRAIR096, MPXV298464_082, MPXV_LIB1970_184_107, MPXV_USA2003_039_107, MPXV_USA2003_044_107, PDLMKLCO_00105
Production host: Homo sapiens (human) / References: UniProt: Q5IXS3
#2: DNA chain DNA (5'-D(P*TP*TP*TP*TP*TP*T)-3')


Mass: 1780.199 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)
#3: Chemical
ChemComp-AGS / PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / ATP-GAMMA-S / ADENOSINE 5'-(3-THIOTRIPHOSPHATE) / ADENOSINE 5'-(GAMMA-THIOTRIPHOSPHATE) / ADENOSINE-5'-DIPHOSPHATE MONOTHIOPHOSPHATE


Mass: 523.247 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C10H16N5O12P3S / Feature type: SUBJECT OF INVESTIGATION / Comment: ATP-gamma-S, energy-carrying molecule analogue*YM
#4: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#5: Chemical ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE / Adenosine diphosphate


Mass: 427.201 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Feature type: SUBJECT OF INVESTIGATION / Comment: ADP, energy-carrying molecule*YM
Has ligand of interestY

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Experimental details

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Experiment

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

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Sample preparation

ComponentName: D5 ATPrS-ADP-ssDNA form / Type: COMPLEX / Entity ID: #1-#2 / Source: MULTIPLE SOURCES
Source (natural)Organism: Monkeypox virus
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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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 defocus max: 2200 nm / Nominal defocus min: 1200 nm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: RELION / Version: 3.0.6 / Category: 3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 310318 / Symmetry type: POINT

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