1E6P

Chitinase B from Serratia marcescens inactive mutant E144Q

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1E15

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7		2.0M AMMONIUM SULFATE, 20% GLYCEROL, HEPES PH7.0, pH 7.00

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.134	α = 90
b = 104.138	β = 90
c = 186.654	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	MARRESEARCH		2000-03-27	M	SINGLE WAVELENGTH

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

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	1.7	40	97.7	0.063	13.6	3.9		118061			18.5

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	1.7	1.76	90.2		0.4	2.3	3.5

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1E15	1.7	29.81	117964	1190	97.5	0.182	0.182	0.226	RANDOM	22.1

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]
1.1			2.67		-3.77

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.8
c_scangle_it	2.97
c_scbond_it	2.22
c_mcangle_it	2.05
c_angle_deg	1.6
c_mcbond_it	1.49
c_improper_angle_d	1.06
c_bond_d	0.011
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7812
Nucleic Acid Atoms
Solvent Atoms	1112
Heterogen Atoms	123

Software

Software
Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing