ISDA: 6CXK

X-RAY DIFFRACTION

Crystallization Details

Method	pH	Temprature	Details
X-RAY DIFFRACTION	6.5	293.15	Sitting drop of final volume of 0.8 uL was set up by 1:1 v/v mixing of 15 mg/mL E. coli DHFR working stock with reservoir solution containing 0.1M MES pH 6.5, 27.5% PEG 3350, 0.4M MgCl2. E. coli DHFR working stock was prepared from a 1:1 v/v mixture of 30 mg/ml protein in 20 mM Tris pH 8, 1mM DTT with 50 mM HEPES pH 7.3, 100 mM NaCl. Crystals harvested after 2 weeks growth and cryoprotected with mitegen LV oil before flash freezing in N2.

Unit Cell:

a: 33.698 Å b: 51.525 Å c: 77.421 Å α: 90.000° β: 90.000° γ: 90.000°

Symmetry:

Space Group: P 21 21 21

Crystal Properties:

Matthew's Coefficient: 1.78 Solvent Content: 31.02

Refinement Statistics

Diffraction ID	Structure Solution Method	Cross Validation Method	Resolution Limit (High)	Resolution Limit (Low)	Number of Reflections (Observed)	Number of Reflections (R-free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.1080	30.9490	53202	1993	97.8200	0.1792	0.1961	18.6300

Data Collection

Overall

Resolution Limit (High)	Resolution Limit (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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
1.1080	30.949	97.900	0.067	?	13.440	6.255	?	53265	?	?	11.470

Highest Resolution Shell

#	Resolution Limits (Low)	Resolution Limits (High)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.1080	1.180	87.300	?	?	1.160	2.804	?

Diffraction

Diffraction experiment

Crystal ID	Scattering Type	Data Collection Temprature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1		100 K			?

Radiation Source

Source	Type	Wavelength List	Synchrotron Site	Beamline
SYNCHROTRON	APS BEAMLINE 31-ID	0.97931	APS	31-ID

Software