6H5O

Crystal structure of PBP2a from MRSA in complex with piperacillin at active site.

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1VQQ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		277	20% PEG 1000, 0.1M HEPES pH 7, 0.016M Cadmium Chloride, 0.8M Sodium Chloride

Crystal Properties
Matthews coefficient	Solvent content
2.76	55.45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.713	α = 90
b = 105.014	β = 90
c = 185.624	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	100	PIXEL	DECTRIS PILATUS 6M		2017-02-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALBA BEAMLINE XALOC	0.979260	ALBA	XALOC

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	Rpim I (All)	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	2.82	46.45	99.61	0.025	11.4	8.7		38700

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Rpim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.82	2.92			0.68

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	1VQQ	2.82	46.45	36832	1856	99.65	0.24439	0.24097	0.31064	RANDOM	121.859

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]
0.95			-2.35		1.4

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.324
r_dihedral_angle_3_deg	19.432
r_dihedral_angle_4_deg	17.181
r_long_range_B_refined	16.82
r_long_range_B_other	16.812
r_scangle_other	11.896
r_mcangle_it	11.893
r_mcangle_other	11.892
r_mcbond_it	7.715
r_mcbond_other	7.707
r_scbond_it	7.44
r_scbond_other	7.437
r_dihedral_angle_1_deg	7.381
r_angle_refined_deg	1.133
r_angle_other_deg	0.795
r_chiral_restr	0.057
r_bond_refined_d	0.006
r_gen_planes_refined	0.004
r_bond_other_d	0.002
r_gen_planes_other	0.002
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9900
Nucleic Acid Atoms
Solvent Atoms	112
Heterogen Atoms	81

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing