2NQG

Calpain 1 proteolytic core inactivated by WR18(S,S), an epoxysuccinyl-type inhibitor.

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2G8J	PDB entry 2G8J

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	298	Expansion around 1.1-1.7 M NaCl, 10 mM CaCl2, and 0.1 M MES (pH 6.0), VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.03	39.45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 40.554	α = 90
b = 70.588	β = 90
c = 110.186	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MARRESEARCH	OSMIC CONFOCAL MIRROR	2006-04-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	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	2.04	110.43	88.1	0.079	14.6			17455			19.4

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)
	2.04	2.12	59.4		0.325	0.325	4.1		1848

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 2G8J	2.04	23.1	17455	927	88.07	0.18374	0.1801	0.25118	RANDOM	18.387

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]
-0.51			0.34		0.17

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.727
r_dihedral_angle_4_deg	17.962
r_dihedral_angle_3_deg	16.211
r_dihedral_angle_1_deg	7.207
r_scangle_it	3.778
r_scbond_it	2.515
r_mcangle_it	1.756
r_angle_refined_deg	1.675
r_mcbond_it	1.085
r_nbtor_refined	0.306
r_metal_ion_refined	0.303
r_nbd_refined	0.221
r_symmetry_vdw_refined	0.218
r_symmetry_hbond_refined	0.185
r_xyhbond_nbd_refined	0.156
r_chiral_restr	0.123
r_bond_refined_d	0.019
r_gen_planes_refined	0.007
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2631
Nucleic Acid Atoms
Solvent Atoms	126
Heterogen Atoms	46

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345	data collection
MOSFLM	data reduction
CCP4	data scaling
MOLREP	phasing