Experiment: 4EHA

Allosteric Modulation of Caspase-3 through Mutagenesis

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	291	Protein solution: 8 mg/ml protein in 10 mM Tris-HCl, pH 8.5, 10 mM DTT, and 3 mM NaN3. Reservoir solution: 100 mM sodium citrate, pH 5.0, 3 mM NaN3, 10 mM DTT, and 10% -16% PEG 6000. Drop: 4ul protein Solution: 4 ul reservoir solution, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.29	46.37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 109.908	α = 90
b = 96.768	β = 127.19
c = 69.783	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	MARMOSAIC 300 mm CCD	Crystal	2007-12-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.0	APS	22-ID

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	1.696	35	86			75258	54629	3	3

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	1.7	1.76	96.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	1.696	24.157	1.34	54629	54485	1988	84.72	0.1988	0.1975	0.1967	0.2332	0.2339	Random

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]
1.1002		-0.7554	-2.9788		1.8786

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.325
f_angle_d	1.145
f_chiral_restr	0.082
f_bond_d	0.007
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3814
Nucleic Acid Atoms
Solvent Atoms	386
Heterogen Atoms

Software

Software
Software Name	Purpose
MAR345	data collection
SERGUI	data collection
PHENIX	model building
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing