2Q33

Crystal structure of all-D monellin at 1.8 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.2	277	20 MM SODIUM PHOSPHATE BUFFER, 28% PEG 8000, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 277K, pH 7.20

Crystal Properties
Matthews coefficient	Solvent content
2.54	51.59

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 40.4	α = 90
b = 32.94	β = 96.73
c = 41.11	γ = 90

Symmetry
Space Group	P 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	277	IMAGE PLATE	MARRESEARCH	SYNCHROTRON	1994-09-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL7-1		SSRL	BL7-1

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	1.8	35	90	0.042	11	3.5		9511		3	13.6

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.8	1.84	70

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	1.8	6	8665	919	87.7	0.175	0.175	0.215	RANDOM	28.2

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]
-0.67		0.89	0.21		0.46

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	25.6
x_scangle_it	5.29
x_scbond_it	3.48
x_mcangle_it	3.27
x_mcbond_it	1.99
x_angle_deg	1.5
x_improper_angle_d	1.3
x_bond_d	0.009
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	754
Nucleic Acid Atoms
Solvent Atoms	82
Heterogen Atoms

Software

Software
Software Name	Purpose
AMoRE	phasing
X-PLOR	refinement
MAR345	data collection
SCALEPACK	data scaling