4BD1

Neutron structure of a perdeuterated Toho-1 R274N R276N double mutant Beta-lactamase in complex with a fully deuterated boronic acid (BZB)

NEUTRON DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		PH 6.5

Crystal Properties
Matthews coefficient	Solvent content
2.59	54.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.429	α = 90
b = 73.429	β = 90
c = 99.112	γ = 120

Symmetry
Space Group	P 32 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	neutron					2012-08-08

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	NUCLEAR REACTOR	FRM II BEAMLINE BIODIFF		FRM II	BIODIFF

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	2	50	90.2	0.15	0.08		4		19436		3.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
NEUTRON DIFFRACTION		NONE	2.002	9.974	18840	961	89.01	0.2214	0.2195	0.2574

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	13.723
f_angle_d	1.154
f_chiral_restr	0.1
f_bond_d	0.019
f_plane_restr	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1970
Nucleic Acid Atoms
Solvent Atoms	145
Heterogen Atoms	12

Software

Software
Software Name	Purpose
PHENIX	refinement
DENZO	data reduction
SCALEPACK	data scaling