3FA0

Evaulaution at Atomic Resolution of the Role of Strain in Destabilizing the Temperature Sensitive T4 Lysozyme Mutant Arg96-->His

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.7	277	2 M Na/K phosphate, pH 6.7, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.76	55.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.37	α = 90
b = 60.37	β = 90
c = 96.57	γ = 120

Symmetry
Space Group	P 32 2 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	IMAGE PLATE	MAR scanner 345 mm plate		1999-01-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-1	0.9800	SSRL	BL9-1

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	1.09	28	92.35	0.57	0.57	9.42	2.7	78959	64093	4	2	13.5

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)
	1.09	1.12	89.6		0.35	0.35	2.2	2.4	5557

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	AB INITIO	FREE R	1.09	28	4	78959	60825	3964	92.4	0.1639	0.1576	0.1485	0.1883	RANDOM

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
22	1273.9	1510

RMS Deviations
Key	Refinement Restraint Deviation
s_approx_iso_adps	0.094
s_zero_chiral_vol	0.08
s_non_zero_chiral_vol	0.079
s_similar_adp_cmpnt	0.046
s_anti_bump_dis_restr	0.045
s_angle_d	0.029
s_from_restr_planes	0.0245
s_bond_d	0.015
s_rigid_bond_adp_cmpnt	0.006
s_similar_dist

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1308
Nucleic Acid Atoms
Solvent Atoms	235
Heterogen Atoms	25

Software

Software
Software Name	Purpose
MAR345dtb	data collection
SHELX	model building
SHELXL-97	refinement
MOSFLM	data reduction
SCALA	data scaling
SHELX	phasing

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 R01GM157729.