7EIR

Crystal structure of chondroitin ABC lyase I in complex with chondroitin disaccharide 6S

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	293	magnesium acetate, ammonium acetate, polyethylene glycol 3350, HEPES-Na

Crystal Properties
Matthews coefficient	Solvent content
2.33	47.16

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.324	α = 90
b = 94.776	β = 90
c = 229.497	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	PIXEL	DECTRIS PILATUS3 S 6M		2020-12-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-5A	1.0	Photon Factory	BL-5A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	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	1.92	50	100	0.128	0.996	10.3	6.6		83417

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.92	1.96	100		0.846	0.746	2.2	6.8

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	1HN0	1.92	49.13	79080	4243	99.97	0.1681	0.1659	0.2104	RANDOM	33.049

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			1.15		-1.7

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.075
r_dihedral_angle_4_deg	16.942
r_dihedral_angle_3_deg	15.614
r_dihedral_angle_1_deg	7.533
r_angle_other_deg	2.38
r_angle_refined_deg	1.901
r_chiral_restr	0.115
r_bond_other_d	0.035
r_gen_planes_other	0.016
r_bond_refined_d	0.013

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.075
r_dihedral_angle_4_deg	16.942
r_dihedral_angle_3_deg	15.614
r_dihedral_angle_1_deg	7.533
r_angle_other_deg	2.38
r_angle_refined_deg	1.901
r_chiral_restr	0.115
r_bond_other_d	0.035
r_gen_planes_other	0.016
r_bond_refined_d	0.013
r_gen_planes_refined	0.011

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7720
Nucleic Acid Atoms
Solvent Atoms	825
Heterogen Atoms	67

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
Aimless	data scaling
MOLREP	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.