1QBA

BACTERIAL CHITOBIASE, GLYCOSYL HYDROLASE FAMILY 20

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6		CRYSTAL WERE GROWN AT ROOM TEMPERATURE FROM HANGING DROPS CONTAINING 62% SATURATED AMMONIUM SULFATE, 1.5% ISOPROPANOL AND 100 MM CACODYLATE, PH 5.6., vapor diffusion - hanging drop

Crystal Properties
Matthews coefficient	Solvent content
2.4	44.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 110.7	α = 90
b = 99.9	β = 90
c = 87.7	γ = 90

Symmetry
Space Group	P 21 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	277	IMAGE PLATE	MARRESEARCH	SEGMENTED TOROIDAL MIRROR	1994-05-10	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11		EMBL/DESY, Hamburg	X11

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	1.85	10	99.9	0.062	15.8	5.5		82854		-3	17.11

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)
	1.85	1.88	99.9		0.276	3.2	3.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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	MULTIPLE ISOMORPHOUS REPLACEMENT	R-FREE	1.85	10	-4	82854	82584	8303	99.9	0.146	0.139	0.196	X-PLOR	17.96

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
p_transverse_tor	26.6
p_staggered_tor	17.4
p_scangle_it	7.2
p_scbond_it	4.8
p_planar_tor	4.6
p_mcangle_it	2.7
p_mcbond_it	1.9
p_multtor_nbd	0.262
p_xyhbond_nbd	0.179
p_singtor_nbd	0.175
p_chiral_restr	0.121
p_planar_d	0.031
p_angle_d	0.026
p_plane_restr	0.023
p_bond_d	0.02
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6807
Nucleic Acid Atoms
Solvent Atoms	771
Heterogen Atoms	20

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASES	phasing
PROLSQ	refinement