Experiment: 4DZD

Crystal structure of the CRISPR-associated protein Cas6e from Escherichia coli str. K-12

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1WJ9

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	289	0.1M Bis-Tris, 0.2M ammonium acetate, 25% PEG3350, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K

Crystal Properties
Matthews coefficient	Solvent content
2.37	48.08

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.9	α = 90
b = 59.9	β = 90
c = 128.66	γ = 90

Symmetry
Space Group	P 41 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315		2010-09-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL17U	0.9792	SSRF	BL17U

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.999	50	99.9	0.1			16585	16585		21.5	24.12

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.03	99.5		0.371	7.2	8.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	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 DIFFRACTION	MOLECULAR REPLACEMENT	1WJ9	1.999	35.376	16524	827	99.78	0.2042	0.2019	0.2064	0.2461	0.2418	29.5102

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]
2.7229			2.7229		-5.4457

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	15.371
f_angle_d	0.986
f_chiral_restr	0.069
f_bond_d	0.006
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1523
Nucleic Acid Atoms
Solvent Atoms	143
Heterogen Atoms	6

Software

Software
Software Name	Purpose
ADSC	data collection
CNS	refinement
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing