1Y3F

Crystal structure of the complex of subtilisin BPN' with chymotrypsin inhibitor 2 F69A mutant

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1TM3

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	277	sodium citrate, isopropanol, PEG 4000, 3% xylitol, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.7	54.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 93.583	α = 90
b = 93.583	β = 90
c = 187.044	γ = 120

Symmetry
Space Group	P 65 2 2

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	ADSC QUANTUM 4		2002-06-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1	1.000	ALS	8.3.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	1.72	81.65	99.6	0.101	10.7	4.7	51924	49329		-3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1TM3	1.72	81.65	51923	49329	2594	99.57	0.1644	0.1644	0.16303	0.1902	inherited from 1TM3	20.315

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]
0.45	0.22		0.45		-0.67

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.83
r_scangle_it	4.621
r_scbond_it	2.777
r_angle_refined_deg	1.818
r_mcangle_it	1.558
r_mcbond_it	0.946
r_symmetry_vdw_refined	0.399
r_nbd_refined	0.214
r_symmetry_hbond_refined	0.204
r_xyhbond_nbd_refined	0.173
r_chiral_restr	0.139
r_metal_ion_refined	0.048
r_bond_refined_d	0.021
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2550
Nucleic Acid Atoms
Solvent Atoms	490
Heterogen Atoms	81

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
TRUNCATE	data reduction
EPMR	phasing
REFMAC	refinement
CCP4	data scaling
TRUNCATE	data scaling