5HUR

Crystal structure of Staphylococcal nuclease variant Delta+PHS L25T/I92K at cryogenic temperature

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9	277	20% MPD, 25 mM potassium phosphate, calcium chloride, pdTp

Crystal Properties
Matthews coefficient	Solvent content
2.22	44.49

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 31.072	α = 90
b = 60.479	β = 93.62
c = 38.157	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M		2013-01-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25	1.1000	NSLS	X25

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	1.5	50	99.3	0.052	19.9	5.9	22450	22450			29.85

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	1.5	1.53	97.5		0.212	5.54	3.9	1109

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 3BDC	1.5	38.08	21351	1080	99.25	0.1853	0.1831	0.231	RANDOM	27.617

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]
-1.46		0.31	-1.47		2.87

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.911
r_dihedral_angle_3_deg	16.844
r_dihedral_angle_4_deg	10.839
r_dihedral_angle_1_deg	6.207
r_scbond_it	2.843
r_mcangle_it	2.116
r_angle_refined_deg	1.849
r_mcbond_it	1.646
r_chiral_restr	0.135
r_gen_planes_refined	0.019

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.911
r_dihedral_angle_3_deg	16.844
r_dihedral_angle_4_deg	10.839
r_dihedral_angle_1_deg	6.207
r_scbond_it	2.843
r_mcangle_it	2.116
r_angle_refined_deg	1.849
r_mcbond_it	1.646
r_chiral_restr	0.135
r_gen_planes_refined	0.019
r_bond_refined_d	0.014

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1033
Nucleic Acid Atoms
Solvent Atoms	86
Heterogen Atoms	26

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction
HKL-2000	data reduction
Coot	model building

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.