Experiment: 4KM6

Human folate receptor alpha (FOLR1) at acidic pH, orthorhombic form

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.5	293	12 mg/mL co-purified with methotrexate in 0.1 M sodium citrate, , 35 % (v/v) jeffamine ED-2001 (MTX not present in structure), pH 5.5, Vapor diffusion, sitting drop, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.65	25.55

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 36.519	α = 90
b = 63.339	β = 90
c = 71.169	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	100	CCD	NOIR-1	The NOIR-1 detector was built by E. Westbrook; 180 cm lens focused CCD	2011-03-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 4.2.2	1.0000	ALS	4.2.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	98.3	0.087	10	5.7		24336

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.55	1.58	86.8		0.495		4.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	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	MOLECULAR REPLACEMENT	1.55	32.491	23197	1906	93.9	0.171	0.1684	0.1628	0.1999	0.1927

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]
-4.8842			-4.5171		9.4013

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.613
f_angle_d	1.163
f_chiral_restr	0.081
f_bond_d	0.007
f_plane_restr	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1667
Nucleic Acid Atoms
Solvent Atoms	126
Heterogen Atoms	43

Software

Software
Software Name	Purpose
SCALEPACK	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
DENZO	data reduction
PHASER	phasing