2Q51

Ensemble refinement of the protein crystal structure of an aspartoacylase from Homo sapiens

X-RAY DIFFRACTION

Crystallization

Crystal Properties
Matthews coefficient	Solvent content
3.8	67.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 145.551	α = 90
b = 145.551	β = 90
c = 103.396	γ = 90

Symmetry
Space Group	P 42 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						M	SINGLE WAVELENGTH

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	Re-refinement using ensemble model	THROUGHOUT	PDB entry 2I3C	2.8	48.716	27305	1374	97.7	0.157	0.157	0.239	RANDOM	36.9

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]
2.8			2.8		-5.6

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	25.2
c_scangle_it	2.33
c_angle_deg	2.3
c_mcangle_it	1.77
c_scbond_it	1.59
c_improper_angle_d	1.47
c_mcbond_it	1.11
c_bond_d	0.018

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4860
Nucleic Acid Atoms
Solvent Atoms	36
Heterogen Atoms	42

Software

Software
Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
CNS	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.