2WUW

Crystallographic analysis of counter-ion effects on subtilisin enzymatic action in acetonitrile (native data)

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1SCA	PDB ENTRY 1SCA

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				SUBTILISIN WAS CRYSTALLIZED BY THE BATCH METHOD FROM BUFFER SOLUTION SATURATED WITH NA2SO4 ABOUT 13% (W/V) AS PRECIPITANT (PETSKO AND TSERNOGLOU 1976).

Crystal Properties
Matthews coefficient	Solvent content
2.03	30.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.668	α = 90
b = 55.314	β = 90
c = 75.989	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	287	CCD	MARRESEARCH			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX10.1		SRS	PX10.1

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	2.23	44.72	98.2	0.13	16.6	12.2		10557		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	2.23	2.31	9.2		0.27	9.2	9.9

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 1SCA	2.23	44.72	10557	542	98.22	0.18531	0.18205	0.24922	RANDOM	34.705

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]
4.08			-1.57		-2.51

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.53
r_dihedral_angle_3_deg	15.563
r_dihedral_angle_4_deg	15.071
r_dihedral_angle_1_deg	5.718
r_scangle_it	4.34
r_scbond_it	2.893
r_angle_refined_deg	1.856
r_mcangle_it	1.535
r_mcbond_it	0.855
r_chiral_restr	0.13
r_bond_refined_d	0.019
r_gen_planes_refined	0.009
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
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_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1920
Nucleic Acid Atoms
Solvent Atoms	125
Heterogen Atoms	23

Software

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