2ZOP

X-ray crystal structure of a CRISPR-associated Cmr5 family protein from Thermus thermophilus HB8

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.6	293	0.1M sodium acetate, 1.7M ammonium sulfate, 0.03M DTT, pH 4.6, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.29	46.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 102.122	α = 90
b = 114.801	β = 90
c = 122.845	γ = 90

Symmetry
Space Group	I 2 2 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	MARMOSAIC 225 mm CCD	A fixed exit Si double crystal monochromator followed by a two dimensional focusing mirror which is coated in rhodium.	2007-09-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL26B2	0.9790	SPring-8	BL26B2

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	2.05	50	99.9	0.064	51.1	10.4	45600	45600			21.2

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)
	2.05	2.12	100		0.314	9.4	10.6	4488

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.1	43.62	42225	42225	4261	99.4	0.236	0.235	0.235	0.249	RANDOM	31.1

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]
4.23			-5.22		1

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	15.4
c_scangle_it	4.87
c_scbond_it	3.36
c_mcangle_it	2.93
c_mcbond_it	2.21
c_angle_deg	1
c_improper_angle_d	0.63
c_bond_d	0.006
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5293
Nucleic Acid Atoms
Solvent Atoms	217
Heterogen Atoms	35

Software

Software
Software Name	Purpose
CNS	refinement
BSS	data collection
HKL-2000	data reduction
HKL-2000	data scaling
SOLVE	phasing