PDBe 4oo8

X-ray diffraction
2.5Å resolution

Crystal structure of Streptococcus pyogenes Cas9 in complex with guide RNA and target DNA


Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
Entry contents:
1 distinct polypeptide molecule
1 distinct DNA molecule
1 distinct RNA molecule
Macromolecules (3 distinct):
CRISPR-associated endonuclease Cas9/Csn1 Chains: A, D
Molecule details ›
Chains: A, D
Length: 1372 amino acids
Theoretical weight: 158.96 KDa
Source organism: Streptococcus pyogenes serotype M1
Expression system: Escherichia coli
  • Canonical: Q99ZW2 (Residues: 1-1368; Coverage: 100%)
Gene names: SPy_1046, cas9, csn1
Sequence domains:
Molecule details ›
Chains: C, F
Length: 23 nucleotides
Theoretical weight: 6.93 KDa
Source organism: Synthetic construct
Expression system: Not provided
RNA (97-MER) Chains: B, E
Molecule details ›
Chains: B, E
Length: 98 nucleotides
Theoretical weight: 31.69 KDa
Source organism: Synthetic construct
Expression system: Not provided

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL32XU
Spacegroup: P1
Unit cell:
a: 76.713Å b: 105.694Å c: 126.817Å
α: 97.68° β: 98.43° γ: 100.31°
R R work R free
0.224 0.222 0.254
Expression systems:
  • Escherichia coli
  • Not provided