7XMH

Crystal structure of a rice class IIIb chitinase, Oschib2

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.5	293	Sodium acetate trihydrate pH 4.5, 3.0 M Sodium chloride

Crystal Properties
Matthews coefficient	Solvent content
2.46	50.04

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.698	α = 90
b = 69.403	β = 90
c = 73.019	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	PIXEL	DECTRIS EIGER X 16M		2016-12-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-17A	0.980	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	1.18	46.72	99.5	0.087	32.49	7		101845

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	1.18	1.2			0.167

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 (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	NONE	4RL3	1.18	46.72	101756	5083	99.848	0.16	0.1597	0.1658	9.561

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]
0.399			-0.057		-0.342

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.777
r_dihedral_angle_4_deg	14.197
r_dihedral_angle_3_deg	11.102
r_dihedral_angle_1_deg	6.62
r_lrange_it	3.134
r_lrange_other	2.881
r_angle_other_deg	1.566
r_scangle_it	1.53
r_scangle_other	1.53
r_angle_refined_deg	1.494
r_mcangle_other	1.241
r_mcangle_it	1.24
r_scbond_it	1.012
r_scbond_other	1.011
r_mcbond_it	0.755
r_mcbond_other	0.747
r_symmetry_nbd_refined	0.252
r_nbd_other	0.215
r_nbd_refined	0.206
r_symmetry_xyhbond_nbd_refined	0.202
r_nbtor_refined	0.181
r_symmetry_nbd_other	0.17
r_xyhbond_nbd_refined	0.139
r_symmetry_nbtor_other	0.083
r_chiral_restr	0.075
r_bond_refined_d	0.008
r_gen_planes_refined	0.007
r_symmetry_xyhbond_nbd_other	0.002
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2213
Nucleic Acid Atoms
Solvent Atoms	335
Heterogen Atoms	28

Software

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