3GXR

The crystal structure of g-type lysozyme from Atlantic cod (Gadus morhua L.) in complex with NAG oligomers sheds new light on substrate binding and the catalytic mechanism. Structure with NAG to 1.7

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	48-53% ammonium sulphate, 5mM CoCl2, 0.1M BisTris, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
1.95	36.97

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 110.19	α = 90
b = 75.52	β = 93.25
c = 78.29	γ = 90

Symmetry
Space Group	C 1 2 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	MARMOSAIC 225 mm CCD		2008-10-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.2	0.91841	BESSY	14.2

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	34	99.3	0.062	0.062	7.8	3.7	70454	69961	2	2	22.34

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.7	1.79	95.6		0.353	0.353	2.9	3.4

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	3GXK	1.7	34	66412	3525	99.25	0.20611	0.20369	0.25231	RANDOM	21.496

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]
0.53		-1.68	-0.84		0.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.893
r_dihedral_angle_4_deg	18.932
r_dihedral_angle_3_deg	16.427
r_dihedral_angle_1_deg	6.235
r_scangle_it	4.431
r_scbond_it	2.924
r_mcangle_it	1.824
r_angle_refined_deg	1.823
r_mcbond_it	1.107
r_chiral_restr	0.141

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.893
r_dihedral_angle_4_deg	18.932
r_dihedral_angle_3_deg	16.427
r_dihedral_angle_1_deg	6.235
r_scangle_it	4.431
r_scbond_it	2.924
r_mcangle_it	1.824
r_angle_refined_deg	1.823
r_mcbond_it	1.107
r_chiral_restr	0.141
r_bond_refined_d	0.02
r_gen_planes_refined	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5731
Nucleic Acid Atoms
Solvent Atoms	293
Heterogen Atoms	187

Software

Software
Software Name	Purpose
MAR345	data collection
MOLREP	phasing
REFMAC	refinement
XDS	data reduction
SCALA	data scaling

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.