1TM1

CRYSTAL STRUCTURE OF THE COMPLEX OF SUBTILISIN BPN' WITH CHYMOTRYPSIN INHIBITOR 2

X-RAY DIFFRACTION

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Crystallization

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

Crystal Properties
Matthews coefficient	Solvent content
3.4	63.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 93.72	α = 90
b = 93.72	β = 90
c = 185.853	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	1.0	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	1.7	81.65	98.2	0.068	13.9	4.8	52791	52791	-3	-3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	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	PDB Entry 1TM3	1.7	81.65	-3	-3	52788	50141	2647	98.16	0.15241	0.15241	0.15085	0.18168	inherited from PDB entry 1TM3	18.044

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]
0.14	0.07		0.14		-0.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.818
r_scangle_it	4.528
r_scbond_it	2.719
r_angle_refined_deg	1.8
r_mcangle_it	1.581
r_mcbond_it	0.939
r_symmetry_vdw_refined	0.4
r_nbd_refined	0.216
r_xyhbond_nbd_refined	0.178
r_symmetry_hbond_refined	0.167
r_chiral_restr	0.135
r_metal_ion_refined	0.077
r_bond_refined_d	0.02
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2560
Nucleic Acid Atoms
Solvent Atoms	511
Heterogen Atoms	82

Software

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