5QT3

Ground state model of human erythroid-specific 5'-aminolevulinate synthase, ALAS2 - SGC Diamond Xchem fragment screening

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	298	0.1 M HEPES pH 7.5, 0.2 M magnesium chloride, 20% PEG3350

Crystal Properties
Matthews coefficient	Solvent content
2.31	46.74

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 125.16	α = 90
b = 108	β = 109.21
c = 75.62	γ = 90

Symmetry
Space Group	C 1 2 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	PIXEL	DECTRIS PILATUS 2M		2019-02-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I02	0.91587	Diamond	I02

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	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	1.95	71.41	98.3	0.074	0.088	0.047	0.998	9.3	3.4		67837

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.95	2	97.7		1.072	1.263	0.663	0.621		3.5	4963

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	FOURIER SYNTHESIS	THROUGHOUT	6hrh	1.95	71.51	64546	3290	98.11	0.1983	0.1968	0.2277	RANDOM	36.156

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]
2.34		-0.47	1.63		-2.93

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	28.202
r_dihedral_angle_4_deg	19.323
r_dihedral_angle_3_deg	16.349
r_dihedral_angle_1_deg	6.705
r_mcangle_it	4.064
r_mcbond_other	2.902
r_mcbond_it	2.901
r_angle_refined_deg	1.538
r_angle_other_deg	1.382
r_chiral_restr	0.074

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	28.202
r_dihedral_angle_4_deg	19.323
r_dihedral_angle_3_deg	16.349
r_dihedral_angle_1_deg	6.705
r_mcangle_it	4.064
r_mcbond_other	2.902
r_mcbond_it	2.901
r_angle_refined_deg	1.538
r_angle_other_deg	1.382
r_chiral_restr	0.074
r_bond_refined_d	0.009
r_gen_planes_refined	0.008
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6605
Nucleic Acid Atoms
Solvent Atoms	248
Heterogen Atoms	32

Software

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.