Experiment: 4MHQ

Crystal structure of human primase catalytic subunit

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.5	294	0.1M Na-acetate, 0.2M Tri-Na-citrate, 20% PEG3350, 0.1M Na-acetate , pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.63	53.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 84.762	α = 90
b = 84.762	β = 90
c = 147.622	γ = 90

Symmetry
Space Group	P 43 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	90	CCD	RIGAKU SATURN A200		2013-01-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL26B1	1.28262	SPring-8	BL26B1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.2	50	89.6	0.076	0.076	9.5	8.9	27910	25240

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.24	91.5		0.976	0.976	1.506	4.7	1263

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 (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.2	38.06	27910	21310	1135	79.92	0.17871	0.1757	0.23305	0.2116	RANDOM	38.961

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]
-0.92			-0.92		1.84

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.757
r_dihedral_angle_3_deg	16.846
r_dihedral_angle_4_deg	15.557
r_dihedral_angle_1_deg	6.096
r_angle_refined_deg	1.182
r_chiral_restr	0.088
r_bond_refined_d	0.007
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3353
Nucleic Acid Atoms
Solvent Atoms	221
Heterogen Atoms	14

Software

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