1RNZ

RIBONUCLEASE A CRYSTALLIZED FROM 2.5M SODIUM CHLORIDE, 3.3M SODIUM FORMATE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.5		CRYSTALLIZED FROM 2.5M SODIUM CHLORIDE, 3.3M SODIUM FORMATE, pH 5.5

Crystal Properties
Matthews coefficient	Solvent content
2.87	57

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.562	α = 90
b = 64.562	β = 90
c = 65.149	γ = 120

Symmetry
Space Group	P 32 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	290	AREA DETECTOR	SIEMENS		1993-04-19	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE

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	1.9	27.9	89	0.049	17.04	2.19		11350

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		1.9	8	2	10380		82.7	0.167		22.9

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
p_transverse_tor	17.6
p_staggered_tor	17
p_scangle_it	3.95
p_scbond_it	2.48
p_mcangle_it	2.29
p_planar_tor	1.6
p_mcbond_it	1.32
p_xyhbond_nbd	0.236
p_multtor_nbd	0.198
p_singtor_nbd	0.172
p_chiral_restr	0.114
p_planar_d	0.039
p_angle_d	0.03
p_bond_d	0.011
p_plane_restr	0.011
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	951
Nucleic Acid Atoms
Solvent Atoms	95
Heterogen Atoms	3

Software

Software
Software Name	Purpose
XDS	data scaling
X-PLOR	model building
PROFFT	refinement
X-PLOR	refinement
XDS	data reduction
X-PLOR	phasing