1RWH

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 hours soaking time, pH 6.4, VAPOR DIFFUSION, HANGING DROP, temperature 100K

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.68

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.621	α = 90
b = 86.305	β = 106.95
c = 80.514	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	1.25	50	90.8	0.058	9.8	5		188554	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	1.25	1.29	56.4

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	1.25	25.24	187327	187327	1122	100	0.11355	0.11338	0.14165	RANDOM	13.093

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]
0.42		0.13	-0.44		0.09

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.517
r_dihedral_angle_4_deg	12.978
r_dihedral_angle_3_deg	10.869
r_sphericity_free	9.107
r_sphericity_bonded	7.222
r_dihedral_angle_1_deg	6.077
r_scangle_it	4.588
r_scbond_it	3.39
r_angle_other_deg	3.275
r_mcangle_it	2.765
r_mcbond_it	2.043
r_angle_refined_deg	2.01
r_rigid_bond_restr	1.99
r_symmetry_vdw_other	0.35
r_nbd_other	0.292
r_nbd_refined	0.236
r_symmetry_hbond_refined	0.234
r_symmetry_vdw_refined	0.211
r_xyhbond_nbd_refined	0.207
r_metal_ion_refined	0.15
r_chiral_restr	0.134
r_nbtor_other	0.108
r_bond_refined_d	0.021
r_gen_planes_refined	0.011
r_gen_planes_other	0.007
r_bond_other_d	0.001
r_nbtor_refined
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_mcbond_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5601
Nucleic Acid Atoms
Solvent Atoms	1107
Heterogen Atoms	84

Software

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