2NWD

Structure of chemically synthesized human lysozyme at 1 Angstrom resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.9	293	c 6 mg/mL, 60 mM LiCl, 1.25 mM Hepes, 15 mM sodium phosphate, 1.25 M NaCl , pH 4.9, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.92	35.89

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.261	α = 90
b = 61.133	β = 90
c = 32.851	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	100	CCD	ADSC QUANTUM 315		2006-10-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-C	0.97949	APS	24-ID-C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.04	50					53675

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	1JSF, see ref. K. Harada, Y. abe, M. Muraki, Proteins, 1998, 30, 232.	1.04	20	50848	2721	97.35	0.13361	0.13257	0.15222	RANDOM	8.171

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]
-0.37			0.22		0.15

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.339
r_dihedral_angle_4_deg	15.693
r_sphericity_free	14.635
r_dihedral_angle_3_deg	11.198
r_dihedral_angle_1_deg	6.625
r_sphericity_bonded	6.034
r_scangle_it	4.847
r_scbond_it	3.946
r_mcangle_it	3.288
r_mcbond_it	2.853
r_rigid_bond_restr	2.076
r_angle_refined_deg	1.716
r_mcbond_other	1.556
r_angle_other_deg	1.111
r_symmetry_vdw_other	0.365
r_nbd_refined	0.23
r_xyhbond_nbd_refined	0.221
r_nbd_other	0.209
r_nbtor_refined	0.184
r_symmetry_hbond_refined	0.183
r_chiral_restr	0.113
r_symmetry_vdw_refined	0.089
r_nbtor_other	0.087
r_bond_refined_d	0.017
r_gen_planes_refined	0.01
r_bond_other_d	0.005
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2061
Nucleic Acid Atoms
Solvent Atoms	630
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling
CCP4	phasing