4J0L | pdb_00004j0l

Crystal Structure of a Family GH19 Chitinase (W72A/E67Q mutant) from rye seeds in complex with two (GlcNAc)4 molecules

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4DWX	PDB ENTRY 4DWX

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	293	0.1M Sodium chloride, 0.1M HEPES (pH 7.5), 1.6M Ammonium sulfate, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.82	56.43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.783	α = 90
b = 78.783	β = 90
c = 95.123	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	95	CCD	ADSC QUANTUM 315r		2012-06-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-17A	0.98	Photon Factory	BL-17A

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	1.9	50	100	0.104	44.8	14.2		24277

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	1.9	1.93	100		0.332	11	14.5	17096

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-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 4DWX	1.9	40.72	22984	1237	99.97	0.18333	0.18208	0.1835	0.20737	0.2088	RANDOM	14.061

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]
0.03			0.03		-0.05

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.409
r_dihedral_angle_4_deg	16.596
r_dihedral_angle_3_deg	12.44
r_dihedral_angle_1_deg	5.065
r_scangle_it	2.031
r_scbond_it	1.237
r_angle_refined_deg	1.079
r_mcangle_it	0.778
r_mcbond_it	0.415
r_chiral_restr	0.075
r_bond_refined_d	0.007
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1834
Nucleic Acid Atoms
Solvent Atoms	187
Heterogen Atoms	143

Software

Software
Software Name	Purpose
HKL-2000	data collection
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling