Experiment: 8G4Z

E. coli DHFR complex with NADP+ and folate: EF-X off model by Laue diffraction (no electric field)

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	7LVC

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		277	20 mM imadazole (pH 5.4-5.8), 15-20% PEG 400, 125 mM MnCl2

Crystal Properties
Matthews coefficient	Solvent content
2.14	42.53

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.286	α = 90
b = 45.53	β = 90
c = 98.995	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	278	CCD	RAYONIX MX340-HS		2021-04-02	L	LAUE

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-ID-B	1.02-1.18	APS	14-ID-B

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.7	41.36	99.5	0.991	19.68	35.53		17637			1.27

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.7	1.76	99.4		0.957	9.76	27.4

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	FOURIER SYNTHESIS	FREE R-VALUE	1.7	41.36	1.32	17637	882	99.48	0.1495	0.1471	0.1451	0.1953	0.1854	8.53

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	13.2222
f_angle_d	0.7667
f_chiral_restr	0.0533
f_plane_restr	0.0068
f_bond_d	0.0042

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1270
Nucleic Acid Atoms
Solvent Atoms	131
Heterogen Atoms	85

Software

Software
Software Name	Purpose
PHENIX	refinement
Precognition	data reduction
careless	data scaling
PHENIX	phasing