2Z39 | pdb_00002z39

Crystal structure of Brassica juncea chitinase catalytic module Glu234Ala mutant (Bjchi3-E234A)

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2Z37	PDB ENTRY 2Z37

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.6	295	20% PEG 3350, 0.2M ammonium formate, pH 6.6, VAPOR DIFFUSION, SITTING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2	36.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.988	α = 90
b = 47.254	β = 100.85
c = 77.668	γ = 90

Symmetry
Space Group	P 1 21 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		2004-06-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2	0.934	ESRF	ID14-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	76.472	97.3	0.21	0.21	2.3	3.6		47339

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.7	1.79	97.5		0.543	0.543	1.2	2.6	6889

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	PDB ENTRY 2Z37	1.7	37.1	45609	2311	94.81	0.18	0.178	0.222	0.2137	RANDOM	14.965

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]
-0.07		-0.74	-0.11		-0.1

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.958
r_dihedral_angle_4_deg	18.606
r_dihedral_angle_3_deg	13.68
r_dihedral_angle_1_deg	5.087
r_scangle_it	3.412
r_scbond_it	2.216
r_mcangle_it	1.465
r_angle_refined_deg	1.317
r_mcbond_it	0.893
r_nbtor_refined	0.313
r_nbd_refined	0.206
r_symmetry_vdw_refined	0.176
r_symmetry_hbond_refined	0.161
r_xyhbond_nbd_refined	0.142
r_chiral_restr	0.098
r_bond_refined_d	0.013
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3825
Nucleic Acid Atoms
Solvent Atoms	421
Heterogen Atoms	19

Software

Software
Software Name	Purpose
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
MOSFLM	data reduction