2H5Z

Crystallographic structure of digestive lysozyme 1 from Musca domestica bound to chitotetraose at 1.92 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	291	1% PEG 400, 0.1M sodium Hepes, 1.4M ammonium sulfate, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.24	45.14

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 35.953	α = 90
b = 78.809	β = 102.16
c = 44.792	γ = 90

Symmetry
Space Group	P 1 21 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	CCD	MAR CCD 165 mm	mirror	2006-02-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	LNLS BEAMLINE D03B-MX1	1.427	LNLS	D03B-MX1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.92	30	88.1	0.078	16.2	3.8	16455	16455

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.92	1.99	82		0.307	2.4	2.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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 2FBD	1.92	30	15980	15152	828	85.57	0.17843	0.17483	0.24247	RANDOM	36.122

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]
1.19		-0.62	-1.83		0.38

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.484
r_dihedral_angle_4_deg	19.561
r_dihedral_angle_3_deg	12.894
r_dihedral_angle_1_deg	6.763
r_scangle_it	3.235
r_scbond_it	2.395
r_angle_refined_deg	1.66
r_mcangle_it	1.476
r_mcbond_it	0.884
r_nbtor_refined	0.322
r_symmetry_vdw_refined	0.243
r_nbd_refined	0.238
r_xyhbond_nbd_refined	0.167
r_symmetry_hbond_refined	0.128
r_chiral_restr	0.107
r_bond_refined_d	0.018
r_gen_planes_refined	0.007
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1937
Nucleic Acid Atoms
Solvent Atoms	173
Heterogen Atoms	43

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345	data collection
HKL-2000	data scaling
MOLREP	phasing