4RL3

Crystal Structure of the Catalytic Domain of a family GH18 Chitinase from fern, Peteris ryukyuensis

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.9	298	0.2M Magnesium acetate tetrahydrate, 20% w/v Polyethylene glycol 3350, pH 7.9, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.25	45.28

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.626	α = 90
b = 78.626	β = 90
c = 167.4	γ = 90

Symmetry
Space Group	I 41

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 270		2012-10-22	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	1.57	71.17	99.7	0.068	68.92	7.4		70282

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	1.57	1.6	95.6		0.096	32.86	6.1	20606

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 3SIM	1.57	50	66710	3550	99.67	0.15093	0.15019	0.16488	RANDOM	7.963

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]
-0.51			-0.51		1.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.606
r_dihedral_angle_4_deg	18.697
r_dihedral_angle_3_deg	10.123
r_dihedral_angle_1_deg	5.671
r_long_range_B_refined	2.295
r_long_range_B_other	2.019
r_angle_refined_deg	1.162
r_angle_other_deg	0.773
r_scangle_other	0.767
r_mcangle_it	0.714
r_mcangle_other	0.714
r_scbond_it	0.464
r_scbond_other	0.464
r_mcbond_it	0.404
r_mcbond_other	0.403
r_chiral_restr	0.071
r_bond_refined_d	0.006
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4052
Nucleic Acid Atoms
Solvent Atoms	528
Heterogen Atoms	26

Software

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