1RWG

Crystal structure of Arthrobacter aurescens chondroitin AC lyase in complex with chondroitin tetrasaccharide

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.4		PEG 8000, ammonium acetate, glycerol, phosphate buffer, 10 minutes soaking time, pH 6.4, VAPOR DIFFUSION, HANGING DROP, temperature 100K

Crystal Properties
Matthews coefficient	Solvent content
2.41	48.88

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.683	α = 90
b = 86.449	β = 106.87
c = 80.566	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	CCD	ADSC QUANTUM 4		2002-06-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X8C	0.9787	NSLS	X8C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	1.5	50	99.9	0.077	9.2	3.8		120769	1	1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.5	1.55	99.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1RW9	1.5	28.06	119480	119480	1221	100	0.13664	0.13629	0.17267	RANDOM	18.336

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]
0.55		0.33	-0.31		-0.04

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.33
r_dihedral_angle_4_deg	13.834
r_dihedral_angle_3_deg	11.059
r_sphericity_free	6.262
r_dihedral_angle_1_deg	6.1
r_sphericity_bonded	5.558
r_scangle_it	4.291
r_scbond_it	3.186
r_mcangle_it	2.47
r_angle_refined_deg	1.832
r_mcbond_it	1.775
r_rigid_bond_restr	1.7
r_metal_ion_refined	0.216
r_nbd_refined	0.211
r_symmetry_hbond_refined	0.201
r_xyhbond_nbd_refined	0.183
r_chiral_restr	0.126
r_symmetry_vdw_refined	0.125
r_bond_refined_d	0.021
r_gen_planes_refined	0.011
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_mcbond_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5600
Nucleic Acid Atoms
Solvent Atoms	1061
Heterogen Atoms	66

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling