4OT4

X-ray Structure of the Adduct formed between cisplatin and Ribonuclease A

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	298	Crystals of RNase A were grown by hanging-drop vapor diffusion technique at 298 K mixing a protein solution containing 20 mg mL-1 of RNase A with equal volumes of reservoir solution. Well diffracting crystals appeared within 15days from the following conditions:20% PEG4000 and 20 mM sodium citrate buffer pH 5.0. , VAPOR DIFFUSION, HANGING DROP

Crystal Properties
Matthews coefficient	Solvent content
1.99	38.28

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 99.767	α = 90
b = 32.463	β = 93.07
c = 67.575	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+			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

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	1.85	50				17075	17075

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 code 1JVT	1.85	30.88	16195	16195	880	91.12	0.192	0.19235	0.18924	0.24709	RANDOM	27.794

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]
0.03		0.24	0.82		-0.85

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.309
r_dihedral_angle_4_deg	17.15
r_dihedral_angle_3_deg	13.064
r_dihedral_angle_1_deg	8.582
r_long_range_B_other	8.194
r_long_range_B_refined	8.161
r_mcangle_it	4.378
r_mcangle_other	4.376
r_scangle_other	4.235
r_mcbond_other	2.814
r_mcbond_it	2.813
r_scbond_it	2.802
r_scbond_other	2.802
r_angle_refined_deg	1.799
r_angle_other_deg	0.913
r_chiral_restr	0.115
r_bond_refined_d	0.018
r_gen_planes_refined	0.009
r_bond_other_d	0.002
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1851
Nucleic Acid Atoms
Solvent Atoms	125
Heterogen Atoms	8

Software

Software
Software Name	Purpose
CrystalClear	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling