4LEH

Crystal structure of a bile-acid 7-alpha dehydratase (CLOSCI_03134) from Clostridium scindens ATCC 35704 at 2.90 A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.6	277	20.00% polyethylene glycol 3350, 0.200M sodium sulfate, No Buffer pH 6.6, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.04	63.75

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 109.322	α = 90
b = 109.322	β = 90
c = 118.263	γ = 120

Symmetry
Space Group	P 31 2 1

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); single crystal Si(111) bent monochromator (horizontal focusing)	2011-01-27	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.97899,0.97947,0.91837	SSRL	BL11-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.9	29.566	99.9	0.094	13.1	7.4	18559	18559

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	2.9	2.98	100		1.123	1.123	1.8	7.5	1364

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	2.9	29.566	18530	948	99.83	0.1793	0.1773	0.2174	RANDOM	96.3126

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]
0.35	0.35		0.35		-1.15

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.633
r_dihedral_angle_4_deg	16.04
r_dihedral_angle_3_deg	14.756
r_mcangle_it	10.996
r_mcbond_it	8.196
r_mcbond_other	8.181
r_dihedral_angle_1_deg	6.043
r_angle_refined_deg	1.486
r_angle_other_deg	0.988
r_chiral_restr	0.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.633
r_dihedral_angle_4_deg	16.04
r_dihedral_angle_3_deg	14.756
r_mcangle_it	10.996
r_mcbond_it	8.196
r_mcbond_other	8.181
r_dihedral_angle_1_deg	6.043
r_angle_refined_deg	1.486
r_angle_other_deg	0.988
r_chiral_restr	0.08
r_bond_refined_d	0.011
r_gen_planes_refined	0.007
r_gen_planes_other	0.005
r_bond_other_d	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4091
Nucleic Acid Atoms
Solvent Atoms	3
Heterogen Atoms	41

Software

Software
Software Name	Purpose
MolProbity	model building
PDB_EXTRACT	data extraction
SHELX	phasing
SHARP	phasing
SCALA	data scaling
REFMAC	refinement
MOSFLM	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 R01GM157729.