4G4C

Room temperature X-ray diffraction study of carboplatin binding to HEWL in DMSO media after 13 months of crystal storage

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2W1Y	PDB ENTRY 2W1Y

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	BATCH	4.7	295	HEWL co-crystallized with carboplatin (with DMSO added) in 1 mL 10% sodium chloride + 1 ml 0.04 M sodium acetate, pH 4.7, BATCH, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.07	40.71

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 79.231	α = 90
b = 79.231	β = 90
c = 37.89	γ = 90

Symmetry
Space Group	P 43 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	295	CCD	APEX II CCD		2012-01-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	BRUKER AXS MICROSTAR	1.5418

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	2	56.025	52	0.157	18	18.3	15602	8170	4	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	2	2.03	97.5		0.855	4.1	10

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 2W1Y	2	56.025	2	4	15602	8170	404	99.83	0.16249	0.16061	0.20319	RANDOM	19.186

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]
-0.17			-0.17		0.33

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.262
r_dihedral_angle_4_deg	21.899
r_dihedral_angle_3_deg	16.098
r_dihedral_angle_1_deg	6.76
r_angle_refined_deg	1.831
r_angle_other_deg	1.096
r_chiral_restr	0.122
r_bond_refined_d	0.018
r_gen_planes_refined	0.008
r_bond_other_d	0.005
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_mcbond_it
r_mcbond_other
r_mcangle_it
r_scbond_it
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	1001
Nucleic Acid Atoms
Solvent Atoms	46
Heterogen Atoms	17

Software

Software
Software Name	Purpose
APEX	data collection
PHASER	phasing
REFMAC	refinement
EVAL15	data reduction
EVAL15	data scaling