6NE0

Structure of double-stranded target DNA engaged Csy complex from Pseudomonas aeruginosa (PA-14)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.6 of the entry. See complete history


Literature

Structure Reveals a Mechanism of CRISPR-RNA-Guided Nuclease Recruitment and Anti-CRISPR Viral Mimicry.

Rollins, M.F.Chowdhury, S.Carter, J.Golden, S.M.Miettinen, H.M.Santiago-Frangos, A.Faith, D.Lawrence, C.M.Lander, G.C.Wiedenheft, B.

(2019) Mol Cell 74: 132-142.e5

  • DOI: 10.1016/j.molcel.2019.02.001
  • Primary Citation of Related Structures:  
    6NE0

  • PubMed Abstract: 
  • Bacteria and archaea have evolved sophisticated adaptive immune systems that rely on CRISPR RNA (crRNA)-guided detection and nuclease-mediated elimination of invading nucleic acids. Here, we present the cryo-electron microscopy (cryo-EM) structure of the type I-F crRNA-guided surveillance complex (Csy complex) from Pseudomonas aeruginosa bound to a double-stranded DNA target ...

    Bacteria and archaea have evolved sophisticated adaptive immune systems that rely on CRISPR RNA (crRNA)-guided detection and nuclease-mediated elimination of invading nucleic acids. Here, we present the cryo-electron microscopy (cryo-EM) structure of the type I-F crRNA-guided surveillance complex (Csy complex) from Pseudomonas aeruginosa bound to a double-stranded DNA target. Comparison of this structure to previously determined structures of this complex reveals a ∼180-degree rotation of the C-terminal helical bundle on the "large" Cas8f subunit. We show that the double-stranded DNA (dsDNA)-induced conformational change in Cas8f exposes a Cas2/3 "nuclease recruitment helix" that is structurally homologous to a virally encoded anti-CRISPR protein (AcrIF3). Structural homology between Cas8f and AcrIF3 suggests that AcrIF3 is a mimic of the Cas8f nuclease recruitment helix.


    Organizational Affiliation

    Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA. Electronic address: bwiedenheft@gmail.com.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CRISPR-associated protein Csy1 A434Pseudomonas aeruginosa UCBPP-PA14Mutation(s): 0 
Gene Names: csy1PA14_33330
Find proteins for Q02ML9 (Pseudomonas aeruginosa (strain UCBPP-PA14))
Explore Q02ML9 
Go to UniProtKB:  Q02ML9
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
CRISPR-associated protein Csy2 B327Pseudomonas aeruginosa UCBPP-PA14Mutation(s): 0 
Gene Names: csy2PA14_33320
Find proteins for Q02MM0 (Pseudomonas aeruginosa (strain UCBPP-PA14))
Explore Q02MM0 
Go to UniProtKB:  Q02MM0
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
CRISPR-associated protein Csy3 CDEFGH342Pseudomonas aeruginosa UCBPP-PA14Mutation(s): 0 
Gene Names: csy3csy1-3PA14_33310
Find proteins for Q02MM1 (Pseudomonas aeruginosa (strain UCBPP-PA14))
Explore Q02MM1 
Go to UniProtKB:  Q02MM1
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
CRISPR-associated endonuclease Cas6/Csy4 L189Pseudomonas aeruginosa UCBPP-PA14Mutation(s): 0 
Gene Names: cas6fcsy4PA14_33300
EC: 3.1
Find proteins for Q02MM2 (Pseudomonas aeruginosa (strain UCBPP-PA14))
Explore Q02MM2 
Go to UniProtKB:  Q02MM2
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsLengthOrganismImage
CRISPR RNA (60-MER)M60Pseudomonas aeruginosa UCBPP-PA14
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Entity ID: 6
MoleculeChainsLengthOrganismImage
CRISPR target DNA (44-MER)N44Pseudomonas aeruginosa UCBPP-PA14
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Entity ID: 7
MoleculeChainsLengthOrganismImage
Non-complementary R-loop DNA strandO34Pseudomonas aeruginosa UCBPP-PA14
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesDP2EB020402, P20GM103500, P30GM110732, R01GM110270, R01GM108888,R21AI130670
National Science Foundation (NSF, United States)United StatesEPS-110134

Revision History  (Full details and data files)

  • Version 1.0: 2018-12-26
    Type: Initial release
  • Version 1.1: 2019-01-30
    Changes: Data collection, Structure summary
  • Version 1.2: 2019-03-20
    Changes: Data collection, Database references
  • Version 1.3: 2019-03-27
    Changes: Data collection, Database references
  • Version 1.4: 2019-04-17
    Changes: Data collection, Database references
  • Version 1.5: 2019-11-27
    Changes: Author supporting evidence
  • Version 1.6: 2019-12-25
    Changes: Database references