5vvj

X-ray diffraction
3.89Å resolution

Cas1-Cas2 bound to half-site intermediate

Released:
Source organism: Escherichia coli K-12
Primary publication:
Structures of the CRISPR genome integration complex.
Science 357 1113-1118 (2017)
PMID: 28729350

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero octamer (preferred)
PDBe Complex ID:
PDB-CPX-119299 (preferred)
Entry contents:
2 distinct polypeptide molecules
2 distinct DNA molecules
Macromolecules (4 distinct):
CRISPR-associated endonuclease Cas1 Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 305 amino acids
Theoretical weight: 33.24 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q46896 (Residues: 1-305; Coverage: 100%)
Gene names: JW2725, b2755, cas1, ygbT
Sequence domains: CRISPR associated protein Cas1
Structure domains:
CRISPR-associated endoribonuclease Cas2 Chains: E, F
Molecule details ›
Chains: E, F
Length: 95 amino acids
Theoretical weight: 10.58 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P45956 (Residues: 1-94; Coverage: 100%)
Gene names: JW5438, b2754, cas2, ygbF
Sequence domains: CRISPR-associated protein (Cas_Cas2CT1978)
DNA (28-MER) Chain: G
Molecule details ›
Chain: G
Length: 28 nucleotides
Theoretical weight: 8.68 KDa
DNA (112-MER) Chain: H
Molecule details ›
Chain: H
Length: 112 nucleotides
Theoretical weight: 34.54 KDa

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 8.3.1
Spacegroup: P212121
Unit cell:
a: 75.067Å b: 183.113Å c: 196.92Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.29 0.288 0.329
Expression system: Escherichia coli BL21(DE3)