3KGY

Crystal structure of Putative dihydrofolate reductase (YP_001636057.1) from CHLOROFLEXUS AURANTIACUS J-10-FL at 1.50 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	9	277	20.0000% PEG-6000, 0.1M Bicine pH 9.0, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.231	α = 90
b = 57.352	β = 90
c = 140.979	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	MARMOSAIC 325 mm CCD	Flat mirror (vertical focusing)	2009-07-08	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.91837,0.97922,0.97876	SSRL	BL11-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (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	1.5	29.709	99.4	0.092	0.092	10	3.6		72017			14.52

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.5	1.54	98.7		0.568	0.568	0.9	3.6	5189

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	MAD	THROUGHOUT	1.5	29.709	71950	3626	99.2	0.15	0.149	0.174	RANDOM	19.867

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]
-0.11			0.63		-0.52

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.369
r_dihedral_angle_4_deg	15.82
r_dihedral_angle_3_deg	10.983
r_dihedral_angle_1_deg	5.173
r_scangle_it	5.088
r_scbond_it	3.97
r_mcangle_it	2.289
r_mcbond_it	1.929
r_angle_refined_deg	1.725
r_angle_other_deg	1.318
r_mcbond_other	0.457
r_symmetry_vdw_other	0.243
r_nbd_refined	0.231
r_nbd_other	0.199
r_xyhbond_nbd_refined	0.186
r_nbtor_refined	0.185
r_symmetry_hbond_refined	0.169
r_symmetry_vdw_refined	0.121
r_chiral_restr	0.099
r_nbtor_other	0.089
r_bond_refined_d	0.018
r_gen_planes_refined	0.009
r_bond_other_d	0.004
r_gen_planes_other	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3470
Nucleic Acid Atoms
Solvent Atoms	566
Heterogen Atoms	170

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
SCALA	data scaling
PDB_EXTRACT	data extraction
MOSFLM	data reduction
autoSHARP	phasing
SHELXD	phasing