3IXH

X-ray crystal structure of the extended-spectrum AmpC Y221G mutant beta-lactamase in complex with cefotaxime at 2.3 Angstrom resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.7	293	1.7M KPi, pH 8.7, vapor diffusion, hanging drop, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.51	51.04

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 117.803	α = 90
b = 77.583	β = 118.6
c = 98.887	γ = 90

Symmetry
Space Group	C 1 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	ADSC QUANTUM 4	mirrors	2009-01-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1	1.11587	ALS	8.3.1

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	2.3	86.822	96.9	0.106	0.106	13.3	4.1	33810	33712

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	2.3	2.42	96.2		0.317	0.317	2.3	4.3	4867

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.3	30	-3	33810	33697	1693	96.56	0.197	0.197	0.194	0.248	RANDOM	29.186

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]
0.5		0.68	-0.92		1.07

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.775
r_dihedral_angle_4_deg	16.913
r_dihedral_angle_3_deg	16.717
r_dihedral_angle_1_deg	6.445
r_scangle_it	3.304
r_scbond_it	1.953
r_angle_refined_deg	1.37
r_mcangle_it	1.354
r_mcbond_it	0.711
r_chiral_restr	0.091

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.775
r_dihedral_angle_4_deg	16.913
r_dihedral_angle_3_deg	16.717
r_dihedral_angle_1_deg	6.445
r_scangle_it	3.304
r_scbond_it	1.953
r_angle_refined_deg	1.37
r_mcangle_it	1.354
r_mcbond_it	0.711
r_chiral_restr	0.091
r_bond_refined_d	0.012
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5584
Nucleic Acid Atoms
Solvent Atoms	182
Heterogen Atoms	26

Software

Software
Software Name	Purpose
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
MOSFLM	data reduction

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.