3ATL

Crystal structure of trypsin complexed with benzamidine

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	277	0.1M TRIS-HCL, 30% PEG 3350, 0.2M LITHIUM SULFATE, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.624	α = 90
b = 58.105	β = 90
c = 66.41	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	IMAGE PLATE	RIGAKU RAXIS IV			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007	1.54

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.74	50	94.4	0.087	0.087	15.6	5.7	21074	21074		-3	17.3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.74	1.8	90.7		0.21	0.21	6.3	5.5	2000

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	3A7T	1.74	19.9	19887	19887	1059	99.44	0.16079	0.16079	0.15935	0.18752	RANDOM	11.713

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]
0.32			-0.82		0.5

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.757
r_dihedral_angle_4_deg	19.505
r_dihedral_angle_3_deg	10.648
r_dihedral_angle_1_deg	6.095
r_scangle_it	1.742
r_scbond_it	1.196
r_angle_refined_deg	1.062
r_angle_other_deg	0.791
r_mcangle_it	0.737
r_mcbond_it	0.502
r_symmetry_vdw_other	0.25
r_nbd_refined	0.234
r_symmetry_vdw_refined	0.197
r_nbd_other	0.19
r_symmetry_hbond_refined	0.184
r_nbtor_refined	0.17
r_xyhbond_nbd_refined	0.11
r_mcbond_other	0.09
r_nbtor_other	0.084
r_chiral_restr	0.064
r_bond_refined_d	0.006
r_gen_planes_refined	0.003
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1629
Nucleic Acid Atoms
Solvent Atoms	317
Heterogen Atoms	22

Software

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