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Open data
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Basic information
Entry | ![]() | |||||||||
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Title | F8-A22-E4 complex of MPXV in trimeric form | |||||||||
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![]() | MPXV / complex / RECOMBINATION / REPLICATION | |||||||||
Function / homology | ![]() viral DNA genome replication / uracil DNA N-glycosylase activity / nucleotide-excision repair, DNA gap filling / DNA replication proofreading / 3'-5'-DNA exonuclease activity / SOS response / base-excision repair, gap-filling / DNA recombination / DNA replication / DNA-directed DNA polymerase ...viral DNA genome replication / uracil DNA N-glycosylase activity / nucleotide-excision repair, DNA gap filling / DNA replication proofreading / 3'-5'-DNA exonuclease activity / SOS response / base-excision repair, gap-filling / DNA recombination / DNA replication / DNA-directed DNA polymerase / DNA-directed DNA polymerase activity / DNA repair / nucleotide binding / DNA binding Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
![]() | Li YN / Shen YP / Hu ZW / Yan RH | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural basis for the assembly of the DNA polymerase holoenzyme from a monkeypox virus variant. Authors: Yaning Li / Yaping Shen / Ziwei Hu / Renhong Yan / ![]() Abstract: The ongoing global pandemic caused by a variant of the monkeypox (or mpox) virus (MPXV) has prompted widespread concern. The MPXV DNA polymerase holoenzyme, consisting of F8, A22, and E4, is vital ...The ongoing global pandemic caused by a variant of the monkeypox (or mpox) virus (MPXV) has prompted widespread concern. The MPXV DNA polymerase holoenzyme, consisting of F8, A22, and E4, is vital for replicating the viral genome and represents a crucial target for the development of antiviral drugs. However, the assembly and working mechanism for the DNA polymerase holoenzyme of MPXV remains elusive. Here, we present the cryo-electron microscopy (cryo-EM) structure of the DNA polymerase holoenzyme at an overall resolution of 3.5 Å. Unexpectedly, the holoenzyme is assembled as a dimer of heterotrimers, of which the extra interface between the thumb domain of F8 and A22 shows a clash between A22 and substrate DNA, suggesting an autoinhibition state. Addition of exogenous double-stranded DNA shifts the hexamer into trimer exposing DNA binding sites, potentially representing a more active state. Our findings provide crucial steps toward developing targeted antiviral therapies for MPXV and related viruses. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 59.6 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 18.4 KB 18.4 KB | Display Display | ![]() |
Images | ![]() | 39.1 KB | ||
Filedesc metadata | ![]() | 6.7 KB | ||
Others | ![]() ![]() | 49.6 MB 49.6 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 706.1 KB | Display | ![]() |
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Full document | ![]() | 705.7 KB | Display | |
Data in XML | ![]() | 12 KB | Display | |
Data in CIF | ![]() | 14.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8hm0MC ![]() 8hlzC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Voxel size | X=Y=Z: 1.072 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #1
File | emd_34887_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_34887_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : F8-A22-E4 complex of MPXV in trimeric form
Entire | Name: F8-A22-E4 complex of MPXV in trimeric form |
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Components |
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-Supramolecule #1: F8-A22-E4 complex of MPXV in trimeric form
Supramolecule | Name: F8-A22-E4 complex of MPXV in trimeric form / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() |
-Supramolecule #2: DNA polymerase processivity factor component A20
Supramolecule | Name: DNA polymerase processivity factor component A20 / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() |
-Supramolecule #3: DNA polymerase
Supramolecule | Name: DNA polymerase / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2 |
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Source (natural) | Organism: ![]() |
-Supramolecule #4: E4R
Supramolecule | Name: E4R / type: complex / ID: 4 / Parent: 1 / Macromolecule list: #3 |
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-Macromolecule #1: DNA polymerase processivity factor component A20
Macromolecule | Name: DNA polymerase processivity factor component A20 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 49.203926 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MTSSADLTNL KELLSLYKSL RFSDSVAIEK YNSLVEWGTS TYWKIGVQKV TNVETSISDY YDEVKNKPFN IDPGYYIFLP VYFGSVFIY SKGKNMVELG SGNSFQIPDE IRSACNKVLD SDNGIDFLRF VLLNNRWIME DAISKYQSPV NIFKLASEYG L NIPNYLEI ...String: MTSSADLTNL KELLSLYKSL RFSDSVAIEK YNSLVEWGTS TYWKIGVQKV TNVETSISDY YDEVKNKPFN IDPGYYIFLP VYFGSVFIY SKGKNMVELG SGNSFQIPDE IRSACNKVLD SDNGIDFLRF VLLNNRWIME DAISKYQSPV NIFKLASEYG L NIPNYLEI EIEEDTLFDD ELYSIMERSF DDTFPKISIS YIKLGELKRQ VVDFFKFSFM YIESIKVDRI GDNIFIPSVI TK SGKKILV KDVDHLIRSK VREHTFVKVK KKNTFSILYD YDGNGTETRG EVIKRIIDTI GRDYYVNGKY FSKVGIAGLK QLT NKLDIN ECATVDELVD EINKSGTVKR KIKNQSVFDL SRECLGYPEA DFITLVNNMR FKIENCKVVN FNIENTNCLN NPSI ETIYG NFNQFVSIFN TVTDVKKRLF E UniProtKB: DNA polymerase processivity factor |
-Macromolecule #2: DNA polymerase
Macromolecule | Name: DNA polymerase / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA-directed DNA polymerase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 117.147102 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MDVRCINWFE SHGENRFLYL KSRCRNGETV FIRFPHYFYY VVTDEIYQSL SPPPFNARPM GKMRTIDIDE TISYNLDIKD RKCSVADMW LIEEPKKRSI QNATMDEFFN ISWFYISNGI SPDGCYSLDE QYLTKINNGC YHCDDPRNCF AKEIPRFDIP R SYLFLDIE ...String: MDVRCINWFE SHGENRFLYL KSRCRNGETV FIRFPHYFYY VVTDEIYQSL SPPPFNARPM GKMRTIDIDE TISYNLDIKD RKCSVADMW LIEEPKKRSI QNATMDEFFN ISWFYISNGI SPDGCYSLDE QYLTKINNGC YHCDDPRNCF AKEIPRFDIP R SYLFLDIE CHFDKKFPSV FINPISHTSY CYIDLSGKRL LFTLINEEML TEQEIQEAVD RGCLRIQSLM EMDYERELVL CS EIVLLRI AKQLLELTFD YVVTFNGHNF DLRYITNRLE LLTGEKIIFR SPDKKEAVHL CIYERNQSSH KGVCGMANTT FHV NNNNGT IFFDLYSFIQ KSEKLDSYKL DSISKNAFSC MGKVLNRGVR EMTFIGDDTT DAKGKADTFA KVLTTGNYVT VDED IICKV IRKDILENGF KVVLSCPTLP NDIYKLSFGK DDIDLAQMYK DYNLNIALDM ARYCIHDACL CQYLWEYYGV ETKTD AGAA TYVLPQSMVF EYRASTIIKG PLLKLLLETK TILVRSETKQ KFPYEGGKVF APKQKMFSNN VLIFDYNSLY PNVCIF GNL SPETLVGVVV STNRLEEEIN NQLLLQKYPP PRYITVHCEP RLPNLISEIA IFDRSIEGTI PRLLRTFLAE RARYKKM LK QATSSTEKAI YDSMQYTYKI VANSVYGLMG FRNSALYSYA SAKSCTSIGR RMILYLESVL NGAELSNGML RFANTLSN P FYMDDRDINP IVKTSLPIDY RFRFRSVYGD TDSVFTEIDS QDVDKSIEIA KELERLINSR VLFNNFKIEF EAVYKNLIM QSKKKYTTMK YSASSNSKSV PERINKGTSE TRRDVSKFHK NMIKTYKTRL SEMLSEGRMN SNQVCIDILR SLETDLRSEF DSRSSPLEL FMLSRMHHSN YKSADNPNMY LVTEYNKNNP ETIELGERYY FAYICPANVP WTKKLVNIKT YETIIDRSFK L GSNQRIFY EVYFKRLTSE IVNLLDNKVL CISFFQRMFG SRPTFYEA UniProtKB: DNA polymerase |
-Macromolecule #3: E4R
Macromolecule | Name: E4R / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO / EC number: uracil-DNA glycosylase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 25.107742 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MNSVTISHAP YTITYHDDWE PVMSQLVEFY NEVASWLLRD ETSPIPDKFF IQLKQPLRNK RVCVCGIDPY PKDGTGVPFE SPNFTKKSI KEIASSISRL TGVIDYKGYN LNIIDGVIPW NYYLSCKLGE TKSHAIYWDK ISKLLLQHIT KHVSVLYCLG K TDFSNIRA ...String: MNSVTISHAP YTITYHDDWE PVMSQLVEFY NEVASWLLRD ETSPIPDKFF IQLKQPLRNK RVCVCGIDPY PKDGTGVPFE SPNFTKKSI KEIASSISRL TGVIDYKGYN LNIIDGVIPW NYYLSCKLGE TKSHAIYWDK ISKLLLQHIT KHVSVLYCLG K TDFSNIRA KLESPVTTIV GYHPAARDHQ FEKDRSFEII NVLLELDNKT PINWAQGFIY UniProtKB: Uracil-DNA glycosylase |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.8 µm / Nominal defocus min: 1.4000000000000001 µm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: OTHER |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0.6) / Number images used: 854700 |
Initial angle assignment | Type: ANGULAR RECONSTITUTION |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |