Experiment: 4AOR

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2XTT	PDB ENTRY 2XTT

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		292	TRYPSIN (SIGMA T1426) WAS DUSIKVED UB 1MM HCL (PH 2.0), 10 MM CACL2, PURIFIED ON A SUPERDEX 75 16/60 COLUMN (BUFFER: 25 MM MES PH 5.5, 50 MM NACL AND 10 MM CACL2). CRYSTALS GREW FROM EQUAL VOL. OF TRYPSIN (11.5 MG/ML) INCUBATED WITH LYOPHILIZED SOTI-III (2.5 MM) AND PRECIPITANT SOLUTION (0.1 M IMIDAZOLE PH 7.5, 12 % (W/V) PEG 8K) IN HANGING DROP CRYSTALLIZATION PLATES AT 19C.

Crystal Properties
Matthews coefficient	Solvent content
2.04	39.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.35	α = 90
b = 66.82	β = 90.17
c = 108.89	γ = 90

Symmetry
Space Group	P 1 21 1

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	MARMOSAIC 225 mm CCD		2010-11-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1		BESSY	14.1

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	1.7	15	97.3	0.08	11.6	3.8		75899		2	13.88

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	1.7	1.8	93.7		0.49	2.85	3.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 2XTT	1.702	32.04	1.99	75888	3794	97.72	0.1808	0.1787	0.2209

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]
2.6926		-0.6891	0.6962		-3.3888

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.606
f_angle_d	1.304
f_chiral_restr	0.09
f_bond_d	0.01
f_plane_restr	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5600
Nucleic Acid Atoms
Solvent Atoms	580
Heterogen Atoms	89

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
PHASER	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.