3G6M

crystal structure of a chitinase CrChi1 from the nematophagous fungus Clonostachys rosea in complex with a potent inhibitor caffeine

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	291	0.2M ammonium dihydrogen phosphate, 15%(w/v) PEG 3350, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.14	42.55

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 44.161	α = 90
b = 72.038	β = 91.24
c = 59.298	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	IMAGE PLATE	MAR scanner 345 mm plate	osmic mirror	2008-06-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007	1.5418

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	1.6	50		0.043			40969	38880

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)
	1.6	1.7			0.204

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 1W9P	1.65	32.05	37325	1995	87.9	0.18473	0.18233	0.23046	RANDOM	13.597

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		-0.13	0.15		-0.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.981
r_dihedral_angle_4_deg	20.061
r_dihedral_angle_1_deg	14.076
r_dihedral_angle_3_deg	12.186
r_scangle_it	2.192
r_scbond_it	1.503
r_angle_refined_deg	1.421
r_mcangle_it	0.888
r_mcbond_it	0.552
r_nbtor_refined	0.307
r_nbd_refined	0.222
r_symmetry_vdw_refined	0.216
r_xyhbond_nbd_refined	0.143
r_chiral_restr	0.103
r_symmetry_hbond_refined	0.089
r_bond_refined_d	0.01
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2965
Nucleic Acid Atoms
Solvent Atoms	662
Heterogen Atoms	28

Software

Software
Software Name	Purpose
MAR345dtb	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling