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- EMDB-30284: COVID-19 RNA-dependent RNA polymerase pre-translocated catalytic ... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-30284 | ||||||||||||||||||||||||
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Title | COVID-19 RNA-dependent RNA polymerase pre-translocated catalytic complex in conformation II | ||||||||||||||||||||||||
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Biological species | ![]() ![]() ![]() ![]() | ||||||||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.12 Å | ||||||||||||||||||||||||
![]() | Wang Q / Gao Y / Ji W / Mu A / Rao Z | ||||||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural Basis for RNA Replication by the SARS-CoV-2 Polymerase. Authors: Quan Wang / Jiqin Wu / Haofeng Wang / Yan Gao / Qiaojie Liu / An Mu / Wenxin Ji / Liming Yan / Yan Zhu / Chen Zhu / Xiang Fang / Xiaobao Yang / Yucen Huang / Hailong Gao / Fengjiang Liu / Ji ...Authors: Quan Wang / Jiqin Wu / Haofeng Wang / Yan Gao / Qiaojie Liu / An Mu / Wenxin Ji / Liming Yan / Yan Zhu / Chen Zhu / Xiang Fang / Xiaobao Yang / Yucen Huang / Hailong Gao / Fengjiang Liu / Ji Ge / Qianqian Sun / Xiuna Yang / Wenqing Xu / Zhijie Liu / Haitao Yang / Zhiyong Lou / Biao Jiang / Luke W Guddat / Peng Gong / Zihe Rao / ![]() ![]() Abstract: Nucleotide analog inhibitors, including broad-spectrum remdesivir and favipiravir, have shown promise in in vitro assays and some clinical studies for COVID-19 treatment, this despite an incomplete ...Nucleotide analog inhibitors, including broad-spectrum remdesivir and favipiravir, have shown promise in in vitro assays and some clinical studies for COVID-19 treatment, this despite an incomplete mechanistic understanding of the viral RNA-dependent RNA polymerase nsp12 drug interactions. Here, we examine the molecular basis of SARS-CoV-2 RNA replication by determining the cryo-EM structures of the stalled pre- and post- translocated polymerase complexes. Compared with the apo complex, the structures show notable structural rearrangements happening to nsp12 and its co-factors nsp7 and nsp8 to accommodate the nucleic acid, whereas there are highly conserved residues in nsp12, positioning the template and primer for an in-line attack on the incoming nucleotide. Furthermore, we investigate the inhibition mechanism of the triphosphate metabolite of remdesivir through structural and kinetic analyses. A transition model from the nsp7-nsp8 hexadecameric primase complex to the nsp12-nsp7-nsp8 polymerase complex is also proposed to provide clues for the understanding of the coronavirus transcription and replication machinery. | ||||||||||||||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 118 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 20.1 KB 20.1 KB | Display Display | ![]() |
Images | ![]() | 95.3 KB | ||
Masks | ![]() | 125 MB | ![]() | |
Others | ![]() ![]() | 116 MB 116 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 79.5 KB | Display | ![]() |
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Full document | ![]() | 78.6 KB | Display | |
Data in XML | ![]() | 494 B | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
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Links
EMDB pages | ![]() ![]() |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Voxel size | X=Y=Z: 0.82 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Mask #1
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_30284_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_30284_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : COVID-19 RNA-dependent RNA polymerase pre-translocated catalytic ...
Entire | Name: COVID-19 RNA-dependent RNA polymerase pre-translocated catalytic complex in conformation II |
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Components |
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-Supramolecule #1: COVID-19 RNA-dependent RNA polymerase pre-translocated catalytic ...
Supramolecule | Name: COVID-19 RNA-dependent RNA polymerase pre-translocated catalytic complex in conformation II type: complex / ID: 1 / Parent: 0 / Macromolecule list: all Details: full-length COVID-19 nsp12 (residues S1-Q932) was incubated with nsp7 (residues S1-Q83) and nsp8 (A1-Q198), and in complex with RNA template and product. |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() ![]() |
-Macromolecule #1: RNA-directed RNA polymerase
Macromolecule | Name: RNA-directed RNA polymerase / type: protein_or_peptide / ID: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MGSADAQSFL NRVCGVSAAR LTPCGTGTST DVVYRAFDIY NDKVAGFAKF LKTNCCRFQE KDEDDNLIDS YFVVKRHTFS NYQHEETIY NLLKDCPAVA KHDFFKFRID GDMVPHISRQ RLTKYTMADL VYALRHFDEG NCDTLKEILV TYNCCDDDYF N KKDWYDFV ...String: MGSADAQSFL NRVCGVSAAR LTPCGTGTST DVVYRAFDIY NDKVAGFAKF LKTNCCRFQE KDEDDNLIDS YFVVKRHTFS NYQHEETIY NLLKDCPAVA KHDFFKFRID GDMVPHISRQ RLTKYTMADL VYALRHFDEG NCDTLKEILV TYNCCDDDYF N KKDWYDFV ENPDILRVYA NLGERVRQAL LKTVQFCDAM RNAGIVGVLT LDNQDLNGNW YDFGDFIQTT PGSGVPVVDS YY SLLMPIL TLTRALTAES HVDTDLTKPY IKWDLLKYDF TEERLKLFDR YFKYWDQTYH PNCVNCLDDR CILHCANFNV LFS TVFPPT SFGPLVRKIF VDGVPFVVST GYHFRELGVV HNQDVNLHSS RLSFKELLVY AADPAMHAAS GNLLLDKRTT CFSV AALTN NVAFQTVKPG NFNKDFYDFA VSKGFFKEGS SVELKHFFFA QDGNAAISDY DYYRYNLPTM CDIRQLLFVV EVVDK YFDC YDGGCINANQ VIVNNLDKSA GFPFNKWGKA RLYYDSMSYE DQDALFAYTK RNVIPTITQM NLKYAISAKN RARTVA GVS ICSTMTNRQF HQKLLKSIAA TRGATVVIGT SKFYGGWHNM LKTVYSDVEN PHLMGWDYPK CDRAMPNMLR IMASLVL AR KHTTCCSLSH RFYRLANECA QVLSEMVMCG GSLYVKPGGT SSGDATTAYA NSVFNICQAV TANVNALLST DGNKIADK Y VRNLQHRLYE CLYRNRDVDT DFVNEFYAYL RKHFSMMILS DDAVVCFNST YASQGLVASI KNFKSVLYYQ NNVFMSEAK CWTETDLTKG PHEFCSQHTM LVKQGDDYVY LPYPDPSRIL GAGCFVDDIV KTDGTLMIER FVSLAIDAYP LTKHPNQEYA DVFHLYLQY IRKLHDELTG HMLDMYSVML TNDNTSRYWE PEFYEAMYTP HTVLQHHHHH HHHHH |
-Macromolecule #2: Non-structural protein 8
Macromolecule | Name: Non-structural protein 8 / type: protein_or_peptide / ID: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GPAIASEFSS LPSYAAFATA QEAYEQAVAN GDSEVVLKKL KKSLNVAKSE FDRDAAMQRK LEKMADQAMT QMYKQARSED KRAKVTSAM QTMLFTMLRK LDNDALNNII NNARDGCVPL NIIPLTTAAK LMVVIPDYNT YKNTCDGTTF TYASALWEIQ Q VVDADSKI ...String: GPAIASEFSS LPSYAAFATA QEAYEQAVAN GDSEVVLKKL KKSLNVAKSE FDRDAAMQRK LEKMADQAMT QMYKQARSED KRAKVTSAM QTMLFTMLRK LDNDALNNII NNARDGCVPL NIIPLTTAAK LMVVIPDYNT YKNTCDGTTF TYASALWEIQ Q VVDADSKI VQLSEISMDN SPNLAWPLIV TALRANSAVK LQ |
-Macromolecule #3: Non-structural protein 7
Macromolecule | Name: Non-structural protein 7 / type: protein_or_peptide / ID: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GPSKMSDVKC TSVVLLSVLQ QLRVESSSKL WAQCVQLHND ILLAKDTTEA FEKMVSLLSV LLSMQGAVDI NKLCEEMLDN RATLQ |
-Macromolecule #4: RNA (5'-R(P*GP*GP*GP*AP*GP*CP*UP*CP*CP*UP*CP*CP*UP*GP*UP*GP*UP*CP...
Macromolecule | Name: RNA (5'-R(P*GP*GP*GP*AP*GP*CP*UP*CP*CP*UP*CP*CP*UP*GP*UP*GP*UP*CP*GP*U)-3') type: rna / ID: 4 |
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Source (natural) | Organism: ![]() ![]() |
Sequence | String: GGGAGAUGUC UCCUCCUGUG UCGUCGAAA |
-Macromolecule #5: RNA (5'-R(P*AP*CP*GP*AP*CP*AP*CP*AP*GP*G*(GS4)P*G)-3')
Macromolecule | Name: RNA (5'-R(P*AP*CP*GP*AP*CP*AP*CP*AP*GP*G*(GS4)P*G)-3') type: rna / ID: 5 |
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Source (natural) | Organism: ![]() ![]() |
Sequence | String: UGUUCGACGA CACAGG(GS4)G |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 5 mg/mL |
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Buffer | pH: 7.5 |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | #0 - Image recording ID: 1 / #0 - Film or detector model: GATAN K2 QUANTUM (4k x 4k) / #0 - Detector mode: SUPER-RESOLUTION / #0 - Average electron dose: 60.0 e/Å2 / #1 - Image recording ID: 2 / #1 - Film or detector model: GATAN K2 QUANTUM (4k x 4k) / #1 - Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |