4H2H

Crystal structure of an enolase (mandalate racemase subgroup, target EFI-502101) from Pelagibaca bermudensis htcc2601, with bound mg and l-4-hydroxyproline betaine (betonicine)

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2PMQ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5	298	Protein (15 mM Hepes pH 8.0, 150 mM NaCl, 10% glycerol, 50 mM MgCl2, 5 mM EDTA, 2 mM NiCl2; Reservoir (0.1 M HEPES:NaOH pH 7.5 70% (v/v) MPD); Soak 2 minutes in (Reservoir + 50 mM MgCl2, 200 mM 4-OH Proline Betaine ) Cryoprotection (Soaking solution), sitting drop vapor diffuction, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.33	47.21

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 91.035	α = 90
b = 152.824	β = 105.2
c = 113.027	γ = 90

Symmetry
Space Group	P 1 21 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	RAYONIX MX225HE	MIRRORS	2012-04-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 31-ID		APS	31-ID

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	1.7	109.072	99.9	0.085	8.9	3.8		325934

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	1.7	1.79	99.9		0.577	0.577	1.3	3.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	2PMQ	1.7	25.68	325787	325787	16434	99.9	0.16	0.159	0.192	23.53

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	12.802
f_angle_d	1.109
f_chiral_restr	0.074
f_bond_d	0.011
f_plane_restr	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	22160
Nucleic Acid Atoms
Solvent Atoms	2066
Heterogen Atoms	183

Software

Software
Software Name	Purpose
SCALA	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
MOSFLM	data reduction
PHENIX	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.