4PHK

The Structural Basis of Differential Inhibition of Human Calpain by Indole and Phenyl alpha-Mercaptoacrylic Acids. The complex with (Z)-3-(4-chlorophenyl)-2-mercaptoacrylic acid

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293	PROTEIN WAS CRYSTALLIZED FROM 12% PEG6000, 20 MM CACL2, 50 MM CACODYLATE BUFFER, PH7.4

Crystal Properties
Matthews coefficient	Solvent content
2.82	56.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.54	α = 90
b = 80.09	β = 91.33
c = 56.89	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	100	PIXEL	DECTRIS PILATUS 2M		2013-09-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I03	0.9673	Diamond	I03

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	2.05	80.09	91.8	0.062	10.8	3.4	87320	25589

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	2.05	2.1	70		0.603	2.3	2.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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		THROUGHOUT	2.05	80.09	24048	1289	90.71	0.23333	0.23073	0.27936	RANDOM	39.244

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]
-0.89		-1.03	1.24		-0.3

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.958
r_dihedral_angle_3_deg	18.106
r_dihedral_angle_4_deg	13.575
r_long_range_B_refined	6.648
r_long_range_B_other	6.613
r_dihedral_angle_1_deg	6.143
r_scangle_other	3.8
r_mcangle_it	2.895
r_mcangle_other	2.895
r_scbond_it	2.471
r_scbond_other	2.47
r_mcbond_it	1.934
r_mcbond_other	1.933
r_angle_refined_deg	1.742
r_angle_other_deg	0.933
r_chiral_restr	0.114
r_bond_refined_d	0.016
r_gen_planes_refined	0.008
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	2806
Nucleic Acid Atoms
Solvent Atoms	140
Heterogen Atoms	34

Software

Software
Software Name	Purpose
REFMAC	refinement