3A3O

Crystal structure of complex between SA-subtilisin and Tk-propeptide with deletion of the five C-terminal residues

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	293	0.1M Sodium Cacodylate, 0.2M Zinc Acetate, 2%(w/v) PEG4000, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.99	38.34

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.478	α = 90
b = 68.494	β = 90
c = 73.874	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	CCD	Bruker DIP-6040		2008-07-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL44XU	1.0	SPring-8	BL44XU

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	1.9	50	99.8	0.101	35.5			26709

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	1.9	1.97	100		0.37	8.7

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	2Z30	1.9	30.25	25020	1319	99.76	0.16565	0.16341	0.20763	RANDOM	19.463

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]
-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.245
r_dihedral_angle_4_deg	19.84
r_dihedral_angle_3_deg	15.643
r_dihedral_angle_1_deg	5.936
r_scangle_it	3.601
r_scbond_it	2.307
r_angle_refined_deg	1.432
r_mcangle_it	1.429
r_mcbond_it	0.878
r_nbtor_refined	0.306
r_metal_ion_refined	0.277
r_symmetry_vdw_refined	0.277
r_symmetry_metal_ion_refined	0.244
r_nbd_refined	0.223
r_symmetry_hbond_refined	0.173
r_xyhbond_nbd_refined	0.164
r_chiral_restr	0.117
r_bond_refined_d	0.015
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2777
Nucleic Acid Atoms
Solvent Atoms	270
Heterogen Atoms	8

Software

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