8Y0A | pdb_00008y0a

Crystal structure of LbCas12a in complex with crRNA and 18nt target DNA


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 5XUZ 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP2890.1875 mM lithium sulfate, 75 mM sodium phosphate dibasic, 50 mM citric acid, 16% PEG 1000
Crystal Properties
Matthews coefficientSolvent content
2.754.41

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 121.777α = 90
b = 142.673β = 90
c = 209.126γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray289PIXELDECTRIS PILATUS 6M2022-10-22MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRF BEAMLINE BL18U10.97915SSRFBL18U1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)Rpim I (All)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
13.51501000.113811.34607148.66
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Rpim I (All)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
13.513.581000.292.4510.7

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-Work (Depositor)R-Work (DCC)R-Free (Depositor)R-Free (DCC)Mean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE5XUZ3.5125.872.0344315220996.230.24040.23760.23690.29380.291354.84
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d21.9613
f_angle_d0.696
f_chiral_restr0.0426
f_plane_restr0.004
f_bond_d0.0038
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms19922
Nucleic Acid Atoms3160
Solvent Atoms16
Heterogen Atoms4

Software

Software
Software NamePurpose
PHENIXrefinement
HKL-3000data scaling
HKL-3000data reduction
Cootmodel building
PHENIXphasing