8kag

Crystal structure of SpyCas9 in complex with sgRNA and target RNA

Method: X-RAY DIFFRACTION Dmax: 132.8 Å Quality: GOOD

1. Protein Identity and Related Structures Protein Identity & Related Structures

CRISPR-associated endonuclease Cas9/Csn1

Streptococcus pyogenes serotype M1

UniProt Q99ZW2

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–RNA Monomer Protein × 1 RNA 2 PDB declaration: trimeric(3) Consistent with all polymer counts Chain B; UniProt 1–1368 Mutation:A10D,A840H RNA (98-MER) × 1 ;RNA (5'-R(*CP*CP*AP*CP*UP*UP*CP*AP*AP*UP*UP*AP*GP*AP*AP*CP*AP*CP*GP*GP*AP*CP*C)-3') ; × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;289 K;1.7 M Ammonium citrate tribasic, 0.1 M HEPES pH 7.0 Resolution 3.88 Å R-free 0.320

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

134 other PDB entries and 146 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CAS9_STRP1
Isoform
PDB entities 1
Chains and sequence ranges Author chain B; PDBConstruct 1–1368; UniProt 1–1368

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 8kag

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8kag
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8kag
Deposition date deposition_date2023-08-03
Structure title titleCrystal structure of SpyCas9 in complex with sgRNA and target RNA
Keywords keywordsNuclease, RNA BINDING PROTEIN/RNA, RNA BINDING PROTEIN-RNA complex; RNA BINDING PROTEIN/RNA
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier39.99
Radius of gyration Rg (electron density) rg_electron39.66
Forward intensity I(0) i0709750000.00
Molecular weight molecular_weight192970.0 kDa
Excluded volume excluded_volume231040 ų
Envelope volume envelope_volume340690 ų
Hydration-shell volume shell_volume69526 ų
Envelope diameter envelope_diameter139.8
Shell Rg shell_rg47.32
Envelope Rg envelope_rg38.61
Shape Rg shape_rg39.66
Total Rg total_rg40.03
Total atoms total_atoms13444
Residues n_residues1464
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax132.8
Rg (real space) rg_real39.72
Rg uncertainty (real space) rg_real_error1.02
I(0) (real space) i0_real7.0970e+08
I(0) uncertainty (real space) i0_real_error1.2410e+07
Rg (reciprocal space) rg_reciprocal39.89
I(0) (reciprocal space) i0_reciprocal709900000.0000
Solution quality estimate total_estimate0.8875
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary53.1
Skewness Skewness skewness0.122
Kurtosis Kurtosis kurtosis-0.484
Angular range angular_range— – 0.2000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha75220000.0000
Real-space data points n_real_points41
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.848; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.995; Smooth: 0.992

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

8. Citations (1)

9. Files and Curves (10)