1F6H

COMBINED RIETVELD AND STEREOCHEMICAL RESTRAINT REFINEMENT OF A PROTEIN

POWDER DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	grinding	6.37	300	saturated ammonium sulphate, sodium dihydrogen phosphate, dipotassium phosphate, powder slurry in 1.5mm capillary, 4mm long, pH 6.37, grinding, temperature 300K

Crystal Properties
Matthews coefficient	Solvent content
1.9	35.15

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.4113	α = 90
b = 30.1946	β = 105.834
c = 34.9476	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		300	SCINTILLATOR		2MM X 8MM BEAM ANALYZER : GE(111)	1998-03-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X3B1		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	3.31	47.06	100		1	2088	2088

Refinement

Statistics
Diffraction ID	Structure Solution Method	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	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION		3.31	47.06	2088	2088		100	0.035	0.035			R-factor on F**2 extracted from powder data during Rietveld refinement

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-torsion_deg	4.33
o_angle_deg	1.63
o-torsion_pseudopotentials	1.41
o-Hbond (A)	0.199
o-chiral volume A**3	0.153
o-antibump (A)	0.049
o_bond_d	0.023

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1217
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	44

Software

Software
Software Name	Purpose
GSAS	refinement
PROCESS	data scaling

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.