Experiment: 6DAV

Crystal Structure of Human DHFR complexed with NADP and N10formyltetrahydrofolate

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	290	Wizard 3/4 H10 (296175h10): 100 mM Tris base/ Hydrochloric acid pH 8.5, 30% (w/v) PEG3350, 30% (v/v) 2-propanol, protein conc. 28.74 mg/mL, protein batch ID XP819, 10 mM NADP, 3.75 mM BSI108214, seeded from 293949g10, cryoprotected with 20% eg, puck izs6-6

Crystal Properties
Matthews coefficient	Solvent content
2.24	45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 37.09	α = 91.05
b = 42.74	β = 101.88
c = 72.29	γ = 120

Symmetry
Space Group	P 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 6M		2018-01-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CLSI BEAMLINE 08ID-1	0.979490	CLSI	08ID-1

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	94	0.031	0.04	0.999	13.42	2.309		50838			21.34

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	94.5		0.395	0.508	0.895	2.11	2.339

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION		THROUGHOUT	1.55	36.64	1.99	50797	2028	93.94	0.1668	0.1652	0.1662	0.2044	0.2044	32.178

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2982
Nucleic Acid Atoms
Solvent Atoms	331
Heterogen Atoms	176

Software

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