1M07

RESIDUES INVOLVED IN THE CATALYSIS AND BASE SPECIFICITY OF CYTOTOXIC RIBONUCLEASE FROM BULLFROG (RANA CATESBEIANA)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	298	0.1 M potassium sodium tartrate tetrahydrate, 24 % PEG 8000, 0.05 M sodium citrate, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.02	38.66

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 28.629	α = 90
b = 53.566	β = 98.31
c = 72.203	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	x-ray	298	CCD	ADSC QUANTUM 4	KOHZU double crystal monochromator	2000-08-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4A	1.05	NSLS	X4A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	1.79	19.68	90.1	0.073	0.073	11.1	6.81	20226	18075			14.8

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.8	1.83	90.5		0.18	0.18	6.2	2.1	894

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	PDB ENTRY 1KM8	1.8	19.68	20134	17518	1369	87	0.227	0.227	0.189	0.228	RANDOM	25.29

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]
15.03		2.85	-7.76		-7.27

RMS Deviations
Key	Refinement Restraint Deviation
x_torsion_deg	26.4
x_dihedral_angle_d	26.4
x_torsion_impr_deg	4.3
x_improper_angle_d	4.3
x_scangle_it	3.14
x_angle_deg	2.5
x_scbond_it	2.09
x_mcangle_it	1.84
x_mcbond_it	1.27
x_bond_d	0.016

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1736
Nucleic Acid Atoms	160
Solvent Atoms	323
Heterogen Atoms

Software

Software
Software Name	Purpose
CNS	refinement
ADSC	data collection
SCALEPACK	data scaling
CNS	phasing

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.