3AFB

Crystal structures of catalytic site mutants of active domain 2 of chitinase from Pyrococcus furiosus

X-RAY DIFFRACTION

---

Crystallization

Crystal Properties
Matthews coefficient	Solvent content
3.2	61.54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 89.912	α = 90
b = 91.997	β = 90
c = 107.402	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	CCD	Bruker DIP-6040			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL44XU	0.9	SPring-8	BL44XU

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	1.76	50	99.5	0.091	29.1	3.7		88365			12

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)
	1.76	1.79	95.8		0.442	3.9	2.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	1.76	46.13	83365	4395	99.55	0.1622	0.16113	0.18232	RANDOM	11.146

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.718
r_dihedral_angle_4_deg	24.236
r_dihedral_angle_3_deg	11.326
r_dihedral_angle_1_deg	6.031
r_scangle_it	3.21
r_scbond_it	2.02
r_metal_ion_refined	1.42
r_angle_refined_deg	1.255
r_mcangle_it	1.165
r_mcbond_it	0.823
r_nbtor_refined	0.317
r_xyhbond_nbd_refined	0.238
r_nbd_refined	0.207
r_symmetry_vdw_refined	0.157
r_symmetry_hbond_refined	0.121
r_chiral_restr	0.091
r_bond_refined_d	0.012
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_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	4760
Nucleic Acid Atoms
Solvent Atoms	474
Heterogen Atoms	31

Software

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