1JA7

BINDING OF N-ACETYLGLUCOSAMINE TO CHICKEN EGG LYSOZYME: A POWDER DIFFRACTION STUDY

POWDER DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	precipitation	5.1	296	rapid precipitation from 0.5M NACL IN PH 6.0 0.05M NA2HPO4/KH2PO4 BUFFER, at 296K, pH 5.1

Crystal Properties
Matthews coefficient	Solvent content
2.08	40.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.963	α = 90
b = 78.963	β = 90
c = 38.215	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	296	SCINTILLATOR		2MM X 8MM BEAM	2000-10-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X3B1	0.699842	NSLS	X3B1

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	2.98	40.1	100			2758	2758

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1RFP	2.98	40.1	2758	2758		100	0.0495	0.0495			23.69

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
o_angle_deg	1.66
o_bond_d	0.026

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1001
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	15

Software

Software
Software Name	Purpose
PROCESS	data reduction
GSAS	model building
GSAS	refinement
PROCESS	data scaling
GSAS	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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.