2Z37

Crystal structure of Brassica juncea chitinase catalytic module (Bjchi3)

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.2	295	10% mono methyl PEG 5000, 0.2M unbuffered sodium acetate, 0.1M sodium acetate, pH 4.2, VAPOR DIFFUSION, SITTING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.1	40.1

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.249	α = 79.34
b = 61.821	β = 89.52
c = 75.359	γ = 88.9

Symmetry
Space Group	P 1

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	ADSC QUANTUM 4		2003-09-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2	0.933	ESRF	ID14-2

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	1.53	50	95.8	0.145	20.7	2		130887

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)
	1.53	1.56	93.1		0.248		1.6	6382

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	Homology model of Brassica juncea chitinase built on PDB ENTRY 2BAA	1.53	42.23	130862	7824	100	0.188	0.185	0.222	RANDOM	21.145

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]
0.05	-0.12	-0.1	-0.31	0.48	0.09

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.379
r_dihedral_angle_4_deg	14.944
r_dihedral_angle_3_deg	12.334
r_dihedral_angle_1_deg	4.843
r_scangle_it	3.63
r_scbond_it	2.577
r_mcangle_it	1.674
r_angle_refined_deg	1.134
r_mcbond_it	1.072
r_nbtor_refined	0.315
r_nbd_refined	0.199
r_symmetry_hbond_refined	0.196
r_symmetry_vdw_refined	0.147
r_xyhbond_nbd_refined	0.13
r_chiral_restr	0.087
r_bond_refined_d	0.008
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7664
Nucleic Acid Atoms
Solvent Atoms	738
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection