1KVW

CARBOXYLIC ESTER HYDROLASE, SINGLE MUTANT H48Q OF BOVINE PANCREATIC PLA2 ENZYME

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1MKT	RECOMBINANT PLA2 (1MKT)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7.2		CRYSTALS WERE GROWN BY THE VAPOR DIFFUSION METHOD USING THE CONDITIONS 5 (MICRO)L OF THE MUTANT PROTEIN (15MG/ML OF THE PROTEIN), 5MM CACL2, 50MM TRIS BUFFER, PH 7.2 AND 2 (MICRO)L OF 40% MPD AND (60%) OF MPD IN THE RESERVOIR, vapor diffusion

Crystal Properties
Matthews coefficient	Solvent content
2.39	48.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 47.12	α = 90
b = 47.12	β = 90
c = 102.88	γ = 120

Symmetry
Space Group	P 31 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	291	IMAGE PLATE	RIGAKU RAXIS IIC		1997-01-15	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU R-AXIS II

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	1.95	10	73	0.082		3		7424		2

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)
	1.95	2.04	50		0.218

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	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	THE COORDINATES OF THE WILD TYPE (PDB ENTRY 1MKT) WERE USED AS THE STARTING MODEL FOR REFINEMENT.	RECOMBINANT PLA2 (1MKT)	1.95	10	2	7424	347	74	0.209	0.209	0.314	BY X-PLOR

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	23
x_angle_deg	1.91
x_improper_angle_d	1.7
x_bond_d	0.013
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	956
Nucleic Acid Atoms
Solvent Atoms	68
Heterogen Atoms	1

Software

Software
Software Name	Purpose
R-AXIS	data collection
R-AXIS	data reduction
X-PLOR	model building
X-PLOR	refinement
R-AXIS	data scaling
X-PLOR	phasing