1O6I

Chitinase B from Serratia marcescens complexed with the catalytic intermediate mimic cyclic dipeptide CI4.

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7		1.4M AMMONIUM SULPHATE 0.1M HEPES PH 7.0, 25% GLYCEROL

Crystal Properties
Matthews coefficient	Solvent content
2.46	47.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.805	α = 90
b = 103.743	β = 90
c = 186.283	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	113	CCD			2001-11-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29		ESRF	ID29

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	20	97.1	0.047	10.7	3.3		114743		2	21.3

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	PDB ENTRY 1E15	1.7	19.9	114670	1159	96.6	0.17	0.17	0.195	RANDOM	27.76

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]
2.9			4.3		-7.2

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	2.9
c_scbond_it	2.1
c_mcangle_it	2
c_angle_deg	1.6
c_mcbond_it	1.5
c_bond_d	0.013
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
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7803
Nucleic Acid Atoms
Solvent Atoms	1416
Heterogen Atoms	252

Software

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