8D69

Crystal structure of hen egg white lysozyme at 175 Kelvin

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.6	295	1.2 M NaCl and 100 mM AcONa pH 4.6

Crystal Properties
Matthews coefficient	Solvent content
2.01	38.73

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.753	α = 90
b = 78.753	β = 90
c = 37.11	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	175	CMOS	BRUKER PHOTON 100		2020-11-03	L	LAUE

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	BRUKER TURBO X-RAY SOURCE	1.54184

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	CC (Half)	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	22.28	99.69	0.841	9.31	1.9		19316

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.5	22.28			0.841

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 (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	3A8Z	1.5	22.28	19316	988	99.685	0.189	0.1869	0.2195	12.317

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]
-0.002			-0.002		0.004

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.638
r_dihedral_angle_4_deg	20.119
r_dihedral_angle_3_deg	13.687
r_dihedral_angle_1_deg	7.097
r_lrange_it	3.865
r_lrange_other	3.858
r_scangle_it	2.978
r_scangle_other	2.976
r_scbond_it	2.074
r_scbond_other	2.073
r_angle_refined_deg	1.882
r_mcangle_it	1.709
r_mcangle_other	1.708
r_angle_other_deg	1.609
r_mcbond_it	1.222
r_mcbond_other	1.168
r_nbd_refined	0.238
r_symmetry_nbd_other	0.201
r_nbd_other	0.178
r_nbtor_refined	0.175
r_symmetry_nbd_refined	0.118
r_xyhbond_nbd_refined	0.114
r_symmetry_nbtor_other	0.093
r_chiral_restr	0.091
r_metal_ion_refined	0.089
r_symmetry_xyhbond_nbd_refined	0.076
r_bond_refined_d	0.013
r_gen_planes_refined	0.011
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1001
Nucleic Acid Atoms
Solvent Atoms	99
Heterogen Atoms	20

Software

Software
Software Name	Purpose
REFMAC	refinement
SAINT	data reduction