1MGR

Crystal structure of RNase Sa3,cytotoxic microbial ribonuclease

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.2	293	sodium acetate, calcium acetate, acetic acid, MPD, ammonium sulphate, pH 4.2, VAPOR DIFFUSION, HANGING DROP at 293K

Crystal Properties
Matthews coefficient	Solvent content
1.9	37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.05	α = 90
b = 34.05	β = 90
c = 147.22	γ = 90

Symmetry
Space Group	P 41 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	293	IMAGE PLATE	MARRESEARCH		1996-11-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7A	0.900	EMBL/DESY, Hamburg	BW7A

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	1.7	20	100	0.036	47.6	6.9		10355			22.2

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)
	1.7	1.71	100		0.119	14	5.8	257

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation 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	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1RGG	1.7	20	10286	10286	498	100	0.186	0.186	0.185	0.224	RANDOM	23.9

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]
-0.205			-0.205		0.411

RMS Deviations
Key	Refinement Restraint Deviation
r_sphericity_free	16.054
r_sphericity_bonded	6.571
p_scangle_it	5.728
r_scangle_it	5.728
r_dihedral_angle_1_deg	5.398
p_scbond_it	3.88
r_scbond_it	3.88
p_mcangle_it	3.129
r_mcangle_it	3.129
p_mcbond_it	2.067
r_mcbond_it	2.067
r_rigid_bond_restr	1.916
p_angle_deg	1.783
p_angle_d	1.783
r_angle_refined_deg	1.783
r_angle_other_deg	0.904
p_hb_or_metal_coord	0.199
p_chiral_restr	0.119
r_chiral_restr	0.119
p_bond_d	0.02
r_bond_refined_d	0.02
r_gen_planes_refined	0.008
r_gen_planes_other	0.002
r_bond_other_d	0.001
p_planar_d
p_plane_restr

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	769
Nucleic Acid Atoms
Solvent Atoms	49
Heterogen Atoms	5

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
REFMAC	refinement