2ZOI

Neutron Crystal Structure of Photoactive Yellow Protein, Wild type, at 295K

NEUTRON DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP, MICROSEEDING	9	295	AMMONIUM SULPHATE, SODIUM CHLORIDE, SODIUM DIDEUTERIUM PHOSPHATE, DISODIUM DEUTERIUM PHOSPHATE, pH 9.0, VAPOR DIFFUSION, HANGING DROP, MICROSEEDING, temperature 295K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.145	α = 90
b = 67.145	β = 90
c = 41.119	γ = 120

Symmetry
Space Group	P 63

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	295	IMAGE PLATE	MACSCIENCE DIP SCANNER FOR NEUTRONS		2007-03-31	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	NUCLEAR REACTOR		2.6

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.5	100	89.6	0.109	7.4	2.6		15293			9.644

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.5	1.55	72.8		0.324	2.91	2	1234

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
NEUTRON DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2ZOH	1.5	70	1	15283	757	89.5	0.192	0.219	RANDOM	14.7

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
c_dihedral_angle_d	24.4
c_scangle_it	5.94
c_scbond_it	5.14
c_mcangle_it	3.71
c_mcbond_it	2.78
c_angle_deg	1.7
c_improper_angle_d	1.68
c_bond_d	0.013
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	976
Nucleic Acid Atoms
Solvent Atoms	73
Heterogen Atoms	11

Software

Software
Software Name	Purpose
AMoRE	phasing
CNS	refinement
MACSCIENCE	data collection
DENZO	data reduction
SCALEPACK	data scaling