6NY2

CasX-gRNA-DNA(45bp) state I


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

CasX enzymes comprise a distinct family of RNA-guided genome editors.

Liu, J.J.Orlova, N.Oakes, B.L.Ma, E.Spinner, H.B.Baney, K.L.M.Chuck, J.Tan, D.Knott, G.J.Harrington, L.B.Al-Shayeb, B.Wagner, A.Brotzmann, J.Staahl, B.T.Taylor, K.L.Desmarais, J.Nogales, E.Doudna, J.A.

(2019) Nature 566: 218-223

  • DOI: 10.1038/s41586-019-0908-x
  • Primary Citation of Related Structures:  
    6NY1, 6NY2, 6NY3

  • PubMed Abstract: 
  • The RNA-guided CRISPR-associated (Cas) proteins Cas9 and Cas12a provide adaptive immunity against invading nucleic acids, and function as powerful tools for genome editing in a wide range of organisms. Here we reveal the underlying mechanisms of a third, fundamentally distinct RNA-guided genome-editing platform named CRISPR-CasX, which uses unique structures for programmable double-stranded DNA binding and cleavage ...

    The RNA-guided CRISPR-associated (Cas) proteins Cas9 and Cas12a provide adaptive immunity against invading nucleic acids, and function as powerful tools for genome editing in a wide range of organisms. Here we reveal the underlying mechanisms of a third, fundamentally distinct RNA-guided genome-editing platform named CRISPR-CasX, which uses unique structures for programmable double-stranded DNA binding and cleavage. Biochemical and in vivo data demonstrate that CasX is active for Escherichia coli and human genome modification. Eight cryo-electron microscopy structures of CasX in different states of assembly with its guide RNA and double-stranded DNA substrates reveal an extensive RNA scaffold and a domain required for DNA unwinding. These data demonstrate how CasX activity arose through convergent evolution to establish an enzyme family that is functionally separate from both Cas9 and Cas12a.


    Organizational Affiliation

    Gladstone Institutes, San Francisco, CA, USA. doudna@berkeley.edu.



Macromolecules

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
CasXC [auth Y]986Deltaproteobacteria bacteriumMutation(s): 0 
Gene Names: DD725_10130
UniProt
Find proteins for A0A357BT59 (Deltaproteobacteria bacterium)
Explore A0A357BT59 
Go to UniProtKB:  A0A357BT59
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A357BT59
Protein Feature View
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Entity ID: 1
MoleculeChainsLengthOrganismImage
DNA target strandA [auth C]45Deltaproteobacteria bacterium
Protein Feature View
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Entity ID: 2
MoleculeChainsLengthOrganismImage
DNA Non-target strandB [auth D]45Deltaproteobacteria bacterium
Protein Feature View
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Entity ID: 4
MoleculeChainsLengthOrganismImage
RNA (110-MER)D [auth B]122Deltaproteobacteria bacterium
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 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 Human Genome Research Institute (NIH/NHGRI)United Statesp01

Revision History  (Full details and data files)

  • Version 1.0: 2019-02-27
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Author supporting evidence
  • Version 1.2: 2019-12-25
    Changes: Database references