+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-31058 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | The Csy-AcrIF14 complex | |||||||||
Map data | ||||||||||
Sample |
| |||||||||
Keywords | inhibitor / complex / IMMUNE SYSTEM / IMMUNE SYSTEM-RNA complex | |||||||||
Function / homology | Function and homology information CRISPR-associated protein Csy1 / CRISPR-associated protein (Cas_Csy1) / CRISPR-associated protein Csy2 / CRISPR-associated protein (Cas_Csy2) / CRISPR-associated protein Csy3 / CRISPR-associated protein (Cas_Csy3) Similarity search - Domain/homology | |||||||||
Biological species | Pseudomonas aeruginosa (bacteria) / Moraxella phage Mcat5 (virus) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.43 Å | |||||||||
Authors | Zhang LX / Feng Y | |||||||||
Citation | Journal: Nucleic Acids Res / Year: 2021 Title: Insights into the dual functions of AcrIF14 during the inhibition of type I-F CRISPR-Cas surveillance complex. Authors: Xi Liu / Laixing Zhang / Yu Xiu / Teng Gao / Ling Huang / Yongchao Xie / Lingguang Yang / Wenhe Wang / Peiyi Wang / Yi Zhang / Maojun Yang / Yue Feng / Abstract: CRISPR-Cas systems are bacterial adaptive immune systems, and phages counteract these systems using many approaches such as producing anti-CRISPR (Acr) proteins. Here, we report the structures of ...CRISPR-Cas systems are bacterial adaptive immune systems, and phages counteract these systems using many approaches such as producing anti-CRISPR (Acr) proteins. Here, we report the structures of both AcrIF14 and its complex with the crRNA-guided surveillance (Csy) complex. Our study demonstrates that apart from interacting with the Csy complex to block the hybridization of target DNA to the crRNA, AcrIF14 also endows the Csy complex with the ability to interact with non-sequence-specific dsDNA as AcrIF9 does. Further structural studies of the Csy-AcrIF14-dsDNA complex and biochemical studies uncover that the PAM recognition loop of the Cas8f subunit of the Csy complex and electropositive patches within the N-terminal domain of AcrIF14 are essential for the non-sequence-specific dsDNA binding to the Csy-AcrIF14 complex, which is different from the mechanism of AcrIF9. Our findings highlight the prevalence of Acr-induced non-specific DNA binding and shed light on future studies into the mechanisms of such Acr proteins. | |||||||||
History |
|
-Structure visualization
Movie |
Movie viewer |
---|---|
Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_31058.map.gz | 4.8 MB | EMDB map data format | |
---|---|---|---|---|
Header (meta data) | emd-31058-v30.xml emd-31058.xml | 16.4 KB 16.4 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_31058_fsc.xml | 7.1 KB | Display | FSC data file |
Images | emd_31058.png | 81.4 KB | ||
Filedesc metadata | emd-31058.cif.gz | 6.1 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-31058 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-31058 | HTTPS FTP |
-Validation report
Summary document | emd_31058_validation.pdf.gz | 465.2 KB | Display | EMDB validaton report |
---|---|---|---|---|
Full document | emd_31058_full_validation.pdf.gz | 464.8 KB | Display | |
Data in XML | emd_31058_validation.xml.gz | 9.3 KB | Display | |
Data in CIF | emd_31058_validation.cif.gz | 12 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31058 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-31058 | HTTPS FTP |
-Related structure data
Related structure data | 7ecvMC 7du0C 7ecwC M: atomic model generated by this map C: citing same article (ref.) |
---|---|
Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
---|
-Map
File | Download / File: emd_31058.map.gz / Format: CCP4 / Size: 30.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.1 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
|
-Supplemental data
-Sample components
-Entire : The Csy-AcrIF14 complex
Entire | Name: The Csy-AcrIF14 complex |
---|---|
Components |
|
-Supramolecule #1: The Csy-AcrIF14 complex
Supramolecule | Name: The Csy-AcrIF14 complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
---|
-Supramolecule #2: Csy
Supramolecule | Name: Csy / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#4, #6 |
---|---|
Source (natural) | Organism: Pseudomonas aeruginosa (bacteria) |
-Supramolecule #3: AcrIF14
Supramolecule | Name: AcrIF14 / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #5 |
---|---|
Source (natural) | Organism: Moraxella phage Mcat5 (virus) |
-Macromolecule #1: Type I-F CRISPR-associated endoribonuclease Cas6/Csy4
Macromolecule | Name: Type I-F CRISPR-associated endoribonuclease Cas6/Csy4 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: Pseudomonas aeruginosa (bacteria) |
Molecular weight | Theoretical: 21.399451 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: MDHYLDIRLR PDPEFPPAQL MSVLFGKLHQ ALVAQGGDRI GVSFPDLDES RSRLGERLRI HASADDLRAL LARPWLEGLR DHLQFGEPA VVPHPTPYRQ VSRVQAKSNP ERLRRRLMRR HDLSEEEARK RIPDTVARAL DLPFVTLRSQ STGQHFRLFI R HGPLQATA EEGGFTCYGL SKGGFVPWF UniProtKB: UNIPROTKB: A0A7G9X1S4 |
-Macromolecule #2: Type I-F CRISPR-associated protein Csy1
Macromolecule | Name: Type I-F CRISPR-associated protein Csy1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: Pseudomonas aeruginosa (bacteria) |
Molecular weight | Theoretical: 49.313254 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: MTSPLPTPTW QELRQFIESF IQERLQGKLD KLHPDEDDKR QTLLATHRRE AWLADAARRV GQLQLVTHTL KPIHPDARGS NLHSLPQAP GQPGLAGSHE LGDRLVSDVV GNAAALDVFK FLSLQYQGKN LLNWLTEDSA EAVQALSDNA EQAREWRQAF I GITAVKGA ...String: MTSPLPTPTW QELRQFIESF IQERLQGKLD KLHPDEDDKR QTLLATHRRE AWLADAARRV GQLQLVTHTL KPIHPDARGS NLHSLPQAP GQPGLAGSHE LGDRLVSDVV GNAAALDVFK FLSLQYQGKN LLNWLTEDSA EAVQALSDNA EQAREWRQAF I GITAVKGA PASHSLAKQL YFPLPGSGYH LLAPLFPTSL VHHVHALLRE ARFGDAAKAA REARSRQESW PHGFSEYPNL AI QKFGGTK PQNISQLNSE RYGENWLLPS LPPHWQRQDQ RAPIRHSSVF EHDFGRSPEV SRLTRTLQRL LAKTRHNNFT IRR YRAQLV GQICDEALQY AARLRELEPG WSATPGCQLH DAEQLWLDPL RAQTDETFLQ RRLRGDWPAE VGNRFANWLN RAVS SDSQI LGSPEAAQWS QELSKELTMF KEILEDERD UniProtKB: Uncharacterized protein |
-Macromolecule #3: CRISPR type I-F/YPEST-associated protein Csy2
Macromolecule | Name: CRISPR type I-F/YPEST-associated protein Csy2 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: Pseudomonas aeruginosa (bacteria) |
Molecular weight | Theoretical: 36.244074 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: MSVTDPEALL LLPRLSIQNA NAISSPLTWG FPSPGAFTGF VHALQRRVGI SLDIELDGVG IVCHRFEAQI SQPAGKRTKV FNLTRNPLN RDGSTAAIVE EGRAHLEVSL LLGVHGDGLD DHPAQEIARQ VQEQAGAMRL AGGSILPWCN ERFPAPNAEL L MLGGSDEQ ...String: MSVTDPEALL LLPRLSIQNA NAISSPLTWG FPSPGAFTGF VHALQRRVGI SLDIELDGVG IVCHRFEAQI SQPAGKRTKV FNLTRNPLN RDGSTAAIVE EGRAHLEVSL LLGVHGDGLD DHPAQEIARQ VQEQAGAMRL AGGSILPWCN ERFPAPNAEL L MLGGSDEQ RRKNQRRLTR RLLPGFALVS REALLQQHLE TLRTTLPEAT TLDALLDLCR INFEPPATSS EEEASPPDAA WQ VRDKPGW LVPIPAGYNA LSPLYLPGEV RNARDRETPL RFVENLFGLG EWLSPHRVAA LSDLLWYHHA EPDKGLYRWS TPR FVEHAI A UniProtKB: Uncharacterized protein |
-Macromolecule #4: CRISPR-associated protein Csy3
Macromolecule | Name: CRISPR-associated protein Csy3 / type: protein_or_peptide / ID: 4 / Number of copies: 6 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: Pseudomonas aeruginosa (bacteria) |
Molecular weight | Theoretical: 37.623324 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: MSKPILSTAS VLAFERKLDP SDALMSAGAW AQRDASQEWP AVTVREKSVR GTISNRLKTK DRDPAKLDAS IQSPNLQTVD VANLPSDAD TLKVRFTLRV LGGAGTPSAC NDAAYRDKLL QTVATYVNEQ GFAELARRYA HNLANARFLW RNRVGAEAVE V RINHIRQG ...String: MSKPILSTAS VLAFERKLDP SDALMSAGAW AQRDASQEWP AVTVREKSVR GTISNRLKTK DRDPAKLDAS IQSPNLQTVD VANLPSDAD TLKVRFTLRV LGGAGTPSAC NDAAYRDKLL QTVATYVNEQ GFAELARRYA HNLANARFLW RNRVGAEAVE V RINHIRQG EVARTWRFDA LAIGLRDFKA DAELDALAEL IASGLSGSGH VLLEVVAFAR IGDGQEVFPS QELILDKGDK KG QKSKTLY SVRDAAAIHS QKIGNALRTI DTWYPDEDGL GPIAVEPYGS VTSQGKAYRQ PKQKLDFYTL LDNWVLRDEA PAV EQQHYV IANLIRGGVF GEAEEK UniProtKB: CRISPR-associated protein Csy3 |
-Macromolecule #5: AcrIF14
Macromolecule | Name: AcrIF14 / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: Moraxella phage Mcat5 (virus) |
Molecular weight | Theoretical: 14.297373 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: MKKIEMIEIS QNRQNLTAFL HISEIKAINA KLADGVDVDK KSFDEICSIV LEQYQAKQIS NKQASEIFET LAKANKSFKI EKFRCSHGY NEIYKYSPDH EAYLFYCKGG QGQLNKLIAE NGRFM UniProtKB: Tail protein |
-Macromolecule #6: RNA (60-MER)
Macromolecule | Name: RNA (60-MER) / type: rna / ID: 6 / Number of copies: 1 |
---|---|
Source (natural) | Organism: Pseudomonas aeruginosa (bacteria) |
Molecular weight | Theoretical: 19.265404 KDa |
Sequence | String: CUAAGAAAUU CACGGCGGGC UUGAUGUCCG CGUCUACCUG GUUCACUGCC GUGUAGGCAG GENBANK: GENBANK: HQ326201.1 |
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7 |
---|---|
Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN |
---|---|
Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: OTHER / Imaging mode: DARK FIELD |