5U5I

The dimeric crystal structure of the selenomethionine derivative of HTPA Reductase from Sellaginella moellendorffii

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8	291	0.2 M CaCl2, 20 % w/v PEG3350

Crystal Properties
Matthews coefficient	Solvent content
2.57	52.05

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.922	α = 90
b = 64.676	β = 90
c = 151.957	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	110	CCD	ADSC QUANTUM 210r		2015-11-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	AUSTRALIAN SYNCHROTRON BEAMLINE MX2	0.9724	Australian Synchrotron	MX2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim 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	2.2	48.91	99.9	0.17	0.176	0.046	0.998	14.5	14.7		32763

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.27	99.6		1.426	1.476	0.378	0.77		14.9	2791

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	SAD	THROUGHOUT	2.2	48.91	31055	1658	99.8	0.2027	0.2004	0.2446	RANDOM	41.426

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]
-0.47			0.32		0.14

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.515
r_dihedral_angle_3_deg	13.269
r_dihedral_angle_4_deg	12.557
r_dihedral_angle_1_deg	5.665
r_angle_refined_deg	1.383
r_angle_other_deg	0.894
r_chiral_restr	0.069
r_bond_refined_d	0.008
r_gen_planes_refined	0.004
r_bond_other_d	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.515
r_dihedral_angle_3_deg	13.269
r_dihedral_angle_4_deg	12.557
r_dihedral_angle_1_deg	5.665
r_angle_refined_deg	1.383
r_angle_other_deg	0.894
r_chiral_restr	0.069
r_bond_refined_d	0.008
r_gen_planes_refined	0.004
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4138
Nucleic Acid Atoms
Solvent Atoms	195
Heterogen Atoms	89

Software

Software
Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
SHELXDE	phasing
PDB_EXTRACT	data extraction
XDS	data reduction
SHELXD	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.