Experiment: 1XX2

Refinement of P99 beta-lactamase from Enterobacter cloacae

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2BLT	pdb entry 2BLT

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION		298	PEG 8000, SODIUM CACODYLATE, MgCl2, NaN3, pH 6.5 - 8.5, VAPOR DIFFUSION, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.34	46.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.5	α = 90
b = 83.47	β = 90.01
c = 95.46	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	298	AREA DETECTOR	SIEMENS HI-STAR	pinholes	1992-02-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.5418

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	1.86	100	0.91	0.039	0.039	40.5	2.5		51415			39.5

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	1.86	1.97	0.537		0.274	0.274	2.7	1.5	51415

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MIR	THROUGHOUT	pdb entry 2BLT	1.88	10	3	45635	45635	2293	77.4	0.175	0.1803	0.214	0.2193	RANDOM	0.419

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
c_dihedral_angle_deg	23.9
c_scangle_it	2.94
c_scbond_it	2.08
c_mcangle_it	1.92
c_angle_deg	1.44
c_mcbond_it	1.325
c_improper_angle_deg	0.91
c_bond_d	0.0073

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5502
Nucleic Acid Atoms
Solvent Atoms	440
Heterogen Atoms

Software

Software
Software Name	Purpose
FRAMBO	data collection
X-GEN	data reduction
PHASES	phasing
CNS	refinement
X-GEN	data scaling