› 6muu

Electron Microscopy
3Å resolution

Cryo-EM structure of Csm-crRNA binary complex in type III-A CRISPR-Cas system

Released:
DOI: 10.2210/pdb6muu/pdb
PDB entry 6muu coloured by chain, front view.
PDB entry 6muu coloured by chain, side view.
PDB entry 6muu coloured by chain, top view.
Source organism: Thermococcus onnurineus
Primary publication:
Type III-A CRISPR-Cas Csm Complexes: Assembly, Periodic RNA Cleavage, DNase Activity Regulation, and Autoimmunity.
Jia N, Mo CY, Wang C, Eng ET, Marraffini LA, Patel DJ
Mol Cell 73 264-277.e5 (2019)
PMID: 30503773
Related structures: EMD-9256

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:
  • not assigned
Sequence domains:

Structure analysis Details

Assembly composition:
hetero heptamer (preferred)
PDBe Complex ID:
PDB-CPX-110421 (preferred)
Entry contents:
5 distinct polypeptide molecules
1 distinct RNA molecule
Macromolecules (6 distinct):
CRISPR system single-strand-specific deoxyribonuclease Cas10/Csm1 (subtype III-A) Chain: A
Molecule details ›
Chain: A
Length: 791 amino acids
Theoretical weight: 89.75 KDa
Source organism: Thermococcus onnurineus
Expression system: Escherichia coli
UniProt:
  • Canonical: B6YWB8 (Residues: 1-777; Coverage: 100%)
Gene names: TON_0893, cas10, csm1
Sequence domains:
CRISPR system Cms protein Csm2 Chain: B
Molecule details ›
Chain: B
Length: 187 amino acids
Theoretical weight: 21.21 KDa
Source organism: Thermococcus onnurineus
Expression system: Escherichia coli
UniProt:
  • Canonical: B6YWB9 (Residues: 1-186; Coverage: 100%)
Gene name: TON_0894
Sequence domains: Csm2 Type III-A
CRISPR system Cms endoribonuclease Csm3 Chains: C, D
Molecule details ›
Chains: C, D
Length: 291 amino acids
Theoretical weight: 32.81 KDa
Source organism: Thermococcus onnurineus
Expression system: Escherichia coli
UniProt:
  • Canonical: B6YWC0 (Residues: 1-290; Coverage: 100%)
Gene name: TON_0895
Sequence domains: RAMP superfamily
CRISPR system Cms protein Csm4 Chain: E
Molecule details ›
Chain: E
Length: 289 amino acids
Theoretical weight: 32.35 KDa
Source organism: Thermococcus onnurineus
Expression system: Escherichia coli
UniProt:
  • Canonical: B6YWC1 (Residues: 1-289; Coverage: 100%)
Gene names: TON_0896, csm4
CRISPR system Cms protein Csm5 Chain: F
Molecule details ›
Chain: F
Length: 403 amino acids
Theoretical weight: 46.09 KDa
Source organism: Thermococcus onnurineus
Expression system: Escherichia coli
UniProt:
  • Canonical: B6YWC2 (Residues: 1-397; Coverage: 100%)
Gene name: TON_0897
Sequence domains: RAMP superfamily
RNA (25-MER) Chain: G
Molecule details ›
Chain: G
Length: 38 nucleotides
Theoretical weight: 12.46 KDa

Ligands and Environments

1 bound ligand:
Ligand ZN 3 x ZN
No modified residues

Experiments and Validation Details

Entry percentile scores
Resolution: 3Å
Relevant EMDB volumes: EMD-9256
Expression system: Escherichia coli

Quick links

Citations

10 review citations

Structure-based functional mechanisms and biotechnology applications of anti-CRISPR proteins.
Jia et al. (2021)
9 more

1 mention without citation

Type III-A CRISPR-Cas Csm Complexes: Assembly, Periodic RNA Cleavage, DNase Activity Regulation, and Autoimmunity.
Jia et al. (2019)