4MXF

X-ray structure of the adduct between bovine pancreatic ribonuclease and Auoxo6, a dinuclear gold(III) complex with -dioxo bridges linking the two metal centers

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	298	20% PEG4000 and 20 mM sodium citrate buffer pH 5.0. Crystals appeared within 7 days. After two weeks, crystals were soaked in a solution of the gold-based drug dissolved in DMSO and in 50 mM sodium citrate buffer pH 5.0. At the final, concentrations of metallodrugs and protein were in at least 1:1 ratio., VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
1.96	37.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 99.595	α = 90
b = 31.297	β = 90.53
c = 69.027	γ = 90

Symmetry
Space Group	C 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	100	CCD	RIGAKU SATURN 944		2013-02-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.54

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.25	23	94.7			9860	9860

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	2.25	2.27	94.9

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 4L55	2.25	23	9349	9349	471	93.67	0.18937	0.18937	0.18542	0.26848	RANDOM	35.251

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]
					-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.195
r_dihedral_angle_3_deg	15.641
r_dihedral_angle_4_deg	14.272
r_dihedral_angle_1_deg	6.571
r_angle_refined_deg	1.489
r_angle_other_deg	0.753
r_chiral_restr	0.083
r_bond_refined_d	0.011
r_gen_planes_refined	0.006
r_bond_other_d	0.001

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.195
r_dihedral_angle_3_deg	15.641
r_dihedral_angle_4_deg	14.272
r_dihedral_angle_1_deg	6.571
r_angle_refined_deg	1.489
r_angle_other_deg	0.753
r_chiral_restr	0.083
r_bond_refined_d	0.011
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1902
Nucleic Acid Atoms
Solvent Atoms	100
Heterogen Atoms	1

Software

Software
Software Name	Purpose
REFMAC	refinement

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.