1BWJ

THE 1.8 A STRUCTURE OF MICROGRAVITY GROWN TETRAGONAL HEN EGG WHITE LYSOZYME

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	microgravity experiment	4.7	293	CRYSTALLISATION TOOK PLACE IN THE EUROPEAN SPACE AGENCY (ESA) ADVANCED PROTEIN CRYSTALLISATION FACILITY (APCF) ONBOARD THE NASA SPACE SHUTTLE'S LIFE AND MICROGRAVITY SPACELAB (LMS) MISSION (STS-78). A SOLUTION OF 21 MG OF HEN EGG WHITE LYSOZYME (3 X CRYSTALLIZED, DIALYSED AND LYOPHILIZED POWDER OF CHICKEN EGG WHITE LYSOZYME SUPPLIED BY SIGMA, L-6876 BATCH NUMBER, LOT 53H7145) DISSOLVED IN 250 UL 0.04 M ACETATE BUFFER (PH 4.7) WAS USED TO FILL THE PROTEIN CHAMBER (188 UL). THE SALT CHAMBERS (541 UL) WERE FILLED WITH 1.35 M NACL AND THE BUFFER CHAMBER (59 UL) WITH 0.04 M ACETATE BUFFER (PH 4.7). SODIUM AZIDE WAS ALSO ADDED TO THE PROTEIN AND BUFFER SOLUTION AS AN ANTI-FUNGAL AGENT (1.92 MG PER 188 UL). CRYSTALLISATION TOOK PLACE AT 20+/-0.1 C., microgravity experiment, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.08	40.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 79.245	α = 90
b = 79.245	β = 90
c = 38.021	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	293	IMAGE PLATE	RIGAKU RAXIS IIC			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

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	1.7	99	85.5	0.072	0.075	19.8	4.9		11846

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 193L	1.8	20	10719		94	0.173	0.173	0.213	RANDOM	22.7

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]

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	22.34
x_angle_deg	1.904
x_improper_angle_d	1.248
x_bond_d	0.009
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1001
Nucleic Acid Atoms
Solvent Atoms	104
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	refinement