2ANY

Expression, Crystallization and the Three-dimensional Structure of the Catalytic Domain of Human Plasma Kallikrein: Implications for Structure-Based Design of Protease Inhibitors

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	290	0.5 microliter of the protein solution and 0.5 microliter of the reservoir solution (25% PEG 6000, 0.10 M MES pH 6.5) , VAPOR DIFFUSION, SITTING DROP, temperature 290.0K

Crystal Properties
Matthews coefficient	Solvent content
2.33	42

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.187	α = 90
b = 57.359	β = 90
c = 79.846	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	138	CCD	ADSC QUANTUM 210		2004-09-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.1	1.000	ALS	5.0.1

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	1.4	20	98.9	0.043	24.6	6.6	49687	49687

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)
	1.4	1.46	94.8		0.206	4

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	Enzymatically deglycosylated plasma kallikrein protease domain, PDB ENTRY 2ANW	1.4	7	49687	49687	5058	99.1	0.19	0.19	0.188	0.213	RANDOM	15

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
x_dihedral_angle_d	25.6
x_angle_deg	2.9
x_bond_d	0.016

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2349
Nucleic Acid Atoms
Solvent Atoms	1272
Heterogen Atoms	33

Software

Software
Software Name	Purpose
DENZO	data reduction
XTALVIEW	refinement
X-PLOR	refinement
SCALEPACK	data scaling

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.