5B7I

Cas3-AcrF3 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural basis of Cas3 inhibition by the bacteriophage protein AcrF3

Wang, X.Yao, D.Xu, J.G.Li, A.R.Xu, J.Fu, P.Zhou, Y.Zhu, Y.

(2016) Nat.Struct.Mol.Biol. 23: 868-870

  • DOI: 10.1038/nsmb.3269

  • PubMed Abstract: 
  • Bacteriophages express proteins that inactivate the CRISPR-Cas bacterial immune system. Here we report the crystal structure of the anti-CRISPR protein AcrF3 in complex with Pseudomonas aeruginosa Cas3 (PaCas3). AcrF3 forms a homodimer that locks PaC ...

    Bacteriophages express proteins that inactivate the CRISPR-Cas bacterial immune system. Here we report the crystal structure of the anti-CRISPR protein AcrF3 in complex with Pseudomonas aeruginosa Cas3 (PaCas3). AcrF3 forms a homodimer that locks PaCas3 in an ADP-bound form, blocks the entrance of the DNA-binding tunnel in the helicase domain, and masks the linker region and C-terminal domain of PaCas3, thereby preventing recruitment by Cascade and inhibiting the type I-F CRISPR-Cas system.


    Organizational Affiliation

    Life Sciences Institute and Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CRISPR-associated nuclease/helicase Cas3 subtype I-F/YPEST
A
1082Pseudomonas aeruginosa (strain UCBPP-PA14)Mutation(s): 0 
Gene Names: cas3
EC: 3.1.-.-, 3.6.4.-
Find proteins for Q02ML8 (Pseudomonas aeruginosa (strain UCBPP-PA14))
Go to UniProtKB:  Q02ML8
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Uncharacterized protein AcrF3
B, C
153Pseudomonas phage JBD5Mutation(s): 0 
Find proteins for L7P7R7 (Pseudomonas phage JBD5)
Go to UniProtKB:  L7P7R7
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
A
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.204 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 97.304α = 90.00
b = 127.197β = 90.00
c = 218.455γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2016-06-07 
  • Released Date: 2016-07-06 
  • Deposition Author(s): Wang, X., Zhu, Y.

Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina81322024
National Natural Science Foundation of ChinaChina81561130162
National Natural Science Foundation of ChinaChina31370722
National Natural Science Foundation of ChinaChina81530068
National Natural Science Foundation of ChinaChina81501717
Natural Science Foundation of Zhejiang province, ChinaChinaLR13C05001

Revision History 

  • Version 1.0: 2016-07-06
    Type: Initial release
  • Version 1.1: 2016-08-10
    Type: Database references
  • Version 1.2: 2016-09-21
    Type: Database references
  • Version 1.3: 2017-10-04
    Type: Data collection, Derived calculations