Experiment: 3AS3

Crystal Structure Analysis of Chitinase A from Vibrio harveyi with novel inhibitors - W275G mutant complex structure with 2-(imidazolin-2-yl)-5-isothiocyanatobenzofuran

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3B9A

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	hanging drop	5.5	293	26%(w/v) PEG4000, 0.2M Ammonium Acetate, 0.1M Sodium Acetate, pH 5.5, hanging drop, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.87	α = 90
b = 83.57	β = 90
c = 102.89	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	100	CCD	MARMOSAIC 225 mm CCD		2009-04-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA	1.00	SLS	X10SA

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	2.4	46.575	99.7	0.114	13.16			23105		-3	29.777

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.4	2.5	99.8		0.475	0.548	6.1

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-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	3b9a	2.4	46.57	23104	1156	99.71	0.1582	0.1545	0.2298	0.2274	RANDOM	22.8891

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]
0.12			0.07		-0.18

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.59
r_dihedral_angle_3_deg	16.607
r_dihedral_angle_4_deg	12.222
r_dihedral_angle_1_deg	6.463
r_angle_refined_deg	1.748
r_chiral_restr	0.119
r_bond_refined_d	0.019
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4344
Nucleic Acid Atoms
Solvent Atoms	224
Heterogen Atoms	40

Software

Software
Software Name	Purpose
XSCALE	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction