7KM8

Crystal Structure of Dihydrofolate reductase (DHFR) from Mycobacterium ulcerans Agy99 in complex with NADP and inhibitor SDDC-0001914, orthorhombic crystal from

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6UWW	NAD and P218-bound structure, PDB entry 6uww

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	287	Morpheus screen condition a9: 10% (w/V) PEG 20,000, 20% (V/V) PEG MME 550: 30mM each magnesium chloride, calcium chloride: 100m bicine / trizma base HCl pH 7.5: MyulA.01062.a.B13.PS38588 at 7.98mg/mll + 2.5 mM NADP and SDDC-0001914 (bsi111353): tray 318487a9: cryo: direct: puck poq5-9

Crystal Properties
Matthews coefficient	Solvent content
2.83	56.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.03	α = 90
b = 82.79	β = 90
c = 133.12	γ = 90

Symmetry
Space Group	I 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	CCD	RAYONIX MX-300		2020-10-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-F	0.97872	APS	21-ID-F

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim 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	1.55	50	99.9	0.063	0.069	0.999	17.91	6.121		62683			22.779

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.55	1.59	100		0.583	0.638	0.873	3.24	6.093

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	FREE R-VALUE	NAD and P218-bound structure, PDB entry 6uww	1.55	39.11	1.35	62674	1932	99.86	0.1568	0.1561	0.1778	0	20.91

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.5725
f_angle_d	0.9764
f_chiral_restr	0.0607
f_plane_restr	0.0089
f_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2428
Nucleic Acid Atoms
Solvent Atoms	523
Heterogen Atoms	158

Software

Software
Software Name	Purpose
XDS	data reduction
XSCALE	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
PHASER	phasing
PHENIX	model building
Coot	model building

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.