1CNM

ENHANCEMENT OF CATALYTIC EFFICIENCY OF PROTEINASE K THROUGH EXPOSURE TO ANHYDROUS ORGANIC SOLVENT AT 70 DEGREES CELSIUS

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5		CRYSTALLIZED BY DISSOLVING THE 10%(W/V) OF LYOPHILIZED ENZYME IN 50MM TRIS.HCL, 1MM CACL2, PH 6.5. 25 MICRO LITRE DROPS OF THIS SOLUTION WERE EQUILIBRATED IN A MICRODIALYSIS SETUP AGAINST 1M NANO3 IN THE SAME BUFFER AT 4 DEGREE., pH 7.5

Crystal Properties
Matthews coefficient	Solvent content
2.18	43.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 68.32	α = 90
b = 68.32	β = 90
c = 108.37	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	285	IMAGE PLATE	MARRESEARCH	PIN HOLE	1998-09-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

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	2.2	15	97	0.045	0.045	40.01	5.4		12156		-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)
	2.2	3	94		0.087	0.087	24.41	4.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2PRK	2.2	15	12156		97	0.168	0.231	RANDOM	17.1

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
p_angle_d	0.025
p_bond_d	0.008
p_angle_deg
p_planar_d
p_hb_or_metal_coord
p_mcbond_it
p_mcangle_it
p_scbond_it
p_scangle_it
p_plane_restr

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2030
Nucleic Acid Atoms
Solvent Atoms	144
Heterogen Atoms	2

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
CCP4	refinement

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.