5MOO

Joint X-ray/neutron structure of cationic trypsin in complex with aniline

X-RAY DIFFRACTION - NEUTRON DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4I8H

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	277	0.2 M ammonium sulfate, 0.1 M Hepes pH 7.5, 16.5-17.0% (w/v) PEG 8000

Crystal Properties
Matthews coefficient	Solvent content
2.32	46.98

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.875	α = 90
b = 58.472	β = 90
c = 67.458	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	295	IMAGE PLATE	MAR scanner 345 mm plate		2016-02-19	M	SINGLE WAVELENGTH
2	1	neutron	295	IMAGE PLATE	MAATEL BIODIFF		2016-07-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	OTHER	1.54179
2	NUCLEAR REACTOR	FRM II BEAMLINE BIODIFF	2.667	FRM II	BIODIFF

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	R Split (All)	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	1.441	44.184	97.3	0.045						27.01	7.361		38793
2	1.43	50	93.8	0.098						7.253	2.5		38342

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	R Merge I (Observed)	R-Sym I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	R Split (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.441	1.53		0.229						9.86	6.025
2	1.43	1.45		0.387						1.858	1.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	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	1.441	44.184		1.36		38776	1959	97.28		0.1357	0.1344	0.1596	Random selection
NEUTRON DIFFRACTION	MOLECULAR REPLACEMENT	1.43	22.092				38317	1911	93.79		0.1708	0.17	0.1848	Random selection

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	12.911
f_dihedral_angle_d	12.911
f_angle_d	1.085
f_angle_d	1.085
f_chiral_restr	0.093
f_chiral_restr	0.093
f_bond_d	0.006
f_plane_restr	0.006
f_bond_d	0.006
f_plane_restr	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1610
Nucleic Acid Atoms
Solvent Atoms	149
Heterogen Atoms	13

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
HKL-2000	data reduction
XDS	data scaling
HKL-2000	data scaling
PHASER	phasing
Coot	model building

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.