6LNB

CryoEM structure of Cascade-TniQ-dsDNA complex

• PDB DOI: https://doi.org/10.2210/pdb6LNB/pdb
• EM Map EMD-0929: EMDB EMDataResource
• NAKB: 6LNB

• Classification: IMMUNE SYSTEM
• Organism(s): Vibrio cholerae, Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2019-12-28 Released: 2020-02-19 
• Deposition Author(s): Wang, B., Xu, W., Yang, H.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.18 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural basis of a Tn7-like transposase recruitment and DNA loading to CRISPR-Cas surveillance complex.

Wang, B., Xu, W., Yang, H.

(2020) Cell Res 30: 185-187

• PubMed: 31913359 
• DOI: https://doi.org/10.1038/s41422-020-0274-0
• Primary Citation of Related Structures:  
  6LNB, 6LNC, 6LND

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Organizational Affiliation: 

State Key Laboratory of Molecular Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 10-mer - A6B2C1D1 

Local Symmetry: Helical - H  (Explore in 3D)
Local Stoichiometry: Homo 6-mer - A6 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - B2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 477.47 kDa 
• Atom Count: 29,583 
• Modelled Residue Count: 3,525 
• Deposited Residue Count: 3,913 
• Unique protein chains: 4
• Unique nucleic acid chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CRISPR-associated protein Cas7	A [auth G], B [auth F], C [auth E], D, E [auth C], F [auth B]	354	Vibrio cholerae	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
CRISPR-associated protein Cas8	G [auth H]	640	Vibrio cholerae	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
CRISPR-associated protein Cas6	H [auth A]	199	Vibrio cholerae	Mutation(s): 0

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Transposition protein TniQ	I [auth J], M [auth I]	394	Vibrio cholerae	Mutation(s): 0

Entity ID: 5
Molecule	Chains	Length	Organism	Image
CRISPR RNA (60-MER)	J [auth M]	60	Vibrio cholerae

Entity ID: 6
Molecule	Chains	Length	Organism	Image
Target DNA strand (51-MER)	K [auth N]	51	Escherichia coli

Entity ID: 7
Molecule	Chains	Length	Organism	Image
Non-target DNA strand (51-MER)	L [auth O]	51	Escherichia coli

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.18 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2020-02-19 
Deposition Author(s): Wang, B., Xu, W., Yang, H.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	31971135

Revision History  

• Version 1.0: 2020-02-19
  Type: Initial release
  
• Version 1.1: 2024-03-27
  Changes: Data collection, Database references