1AKI

THE STRUCTURE OF THE ORTHORHOMBIC FORM OF HEN EGG-WHITE LYSOZYME AT 1.5 ANGSTROMS RESOLUTION

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2LZH	PDB ENTRY 2LZH

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		4.48		pH 4.48

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.84

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.062	α = 90
b = 68.451	β = 90
c = 30.517	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	IMAGE PLATE	RIGAKU RAXIS IIC		1995-11-22	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH2R

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	15	91.1	0.044	11.7	3.1		20571		1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 2LZH	1.5	10	1	16327		91.1	0.212

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
p_transverse_tor	18.9
p_staggered_tor	17.8
p_planar_tor	7.9
p_scangle_it	3.6
p_scbond_it	3.2
p_mcangle_it	2.9
p_mcbond_it	2.5
p_xyhbond_nbd	0.299
p_chiral_restr	0.212
p_singtor_nbd	0.183
p_multtor_nbd	0.159
p_plane_restr	0.033
p_planar_d	0.024
p_bond_d	0.009
p_angle_d	0.0034
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1001
Nucleic Acid Atoms
Solvent Atoms	78
Heterogen Atoms

Software

Software
Software Name	Purpose
RIGAKU	data collection
bioteX	data reduction
X-PLOR	model building
GPRLSA	refinement
X-PLOR	refinement
RIGAKU	data reduction
bioteX	data scaling
X-PLOR	phasing