Experiment: 3BSQ

Crystal structure of human kallikrein 7 produced as a secretion protein in E.coli

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1NPM	PDB ENTRY 1NPM

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	295	3.2M AMMONIUM SULFATE, 0.1M HEPES, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.76	55.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 113.58	α = 90
b = 113.58	β = 90
c = 326.39	γ = 120

Symmetry
Space Group	H 3 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 1			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2		ESRF	ID14-2

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	2.8	54.39	99	0.162	9.4	4.2	19430	19524

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	2.8	2.95	99.5		0.415	2.1	4.3	2816

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-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1NPM	2.8	50	20076	19424	1027	98.33	0.2169	0.2585	0.2915	0.2932	RANDOM	37.111

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
r_angle_refined_deg	1.154
r_bond_refined_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5038
Nucleic Acid Atoms
Solvent Atoms	30
Heterogen Atoms	80

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection