8QWE

Ternary complex of ReChb - crRNA - target dsDNA

• PDB DOI: https://doi.org/10.2210/pdb8QWE/pdb
• EM Map EMD-18693: EMDB EMDataResource
• NAKB: 8QWE

• Classification: BIOSYNTHETIC PROTEIN
• Organism(s): synthetic construct
• Expression System: Escherichia coli BL21(DE3), synthetic construct
• Mutation(s): No 


• Deposited: 2023-10-19 Released: 2024-10-02 
• Deposition Author(s): Lopez-Alonso, J.P., Ubarretxena-Belandia, I., Tascon, I.
• Funding Organization(s): Other government

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.14 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: other

Literature

A resurrected ancestor of Cas12a expands target access and substrate 2 recognition for nucleic-acid editing and detection

Jabalera, Y., Tascon, I., Samperio, S., Lopez-Alonso, J.P., Gonzalez-Lopez, M., Aransay, A.M., Abascal-Palacios, G., Beisel, C.L., Ubarretxena-Belandia, I., Jimenez-Perez, R.

(2024) Nature Biotechnology 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 185.78 kDa 
• Atom Count: 11,721 
• Modelled Residue Count: 1,273 
• Deposited Residue Count: 1,379 
• Unique protein chains: 1
• Unique nucleic acid chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ReChb	A	1,261	synthetic construct	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Length	Organism	Image
crRNA	B [auth C]	40	synthetic construct

Entity ID: 3
Molecule	Chains	Length	Organism	Image
target DNA	C [auth T]	39	synthetic construct

Entity ID: 4
Molecule	Chains	Length	Organism	Image
non target DNA	D [auth N]	39	synthetic construct

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MG	E [auth A], F [auth A], G [auth A], H [auth A], I [auth C]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.14 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC	3.4.0
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-10-02 
Deposition Author(s): Lopez-Alonso, J.P., Ubarretxena-Belandia, I., Tascon, I.

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Funding Organization	Location	Grant Number
Other government		--

Revision History  

• Version 1.0: 2024-10-02
  Type: Initial release