2BFL

Bacillus cereus metallo-beta-lactamase (BcII) Arg (121) Cys mutant. Solved at pH5 using 20mM ZnSO4 in buffer. 1mM DTT was used as a reducing agent.

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1BC2	PDB ENTRY 1BC2

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	291	PROTEIN WAS CRYSTALLISED USING HANGING DROP VAPOR DIFFUSION. RESERVOIR SOLUTION CONTAINED 100MM TRIS AT PH4.5-5, 70-75% AMMONIUM SULPHATE, 1MM DTT OR 1MM DTT AND 1MM TCEP-HCL, 2MM ZNSO4 AND 0.1% AZIDE. PROTEIN CONCENTRATION OF 2.7 MG/ML. DROPS WERE KEPT AT 291K AND WERE STREAK SEEDED FROM A WILD TYPE CRYSTAL AFTER 1 DAY., pH 5.00

Crystal Properties
Matthews coefficient	Solvent content
2.1	42

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.535	α = 90
b = 67.535	β = 90
c = 178.712	γ = 120

Symmetry
Space Group	P 31 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 CCD		2002-02-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1		ESRF	ID14-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.8	55.9	98.7	0.05	9.5	6.8		43889		2	16.67

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.8	1.85	98.7		0.18	3.6	4.9

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	PDB ENTRY 1BC2	1.8	6	82092	4133	98.7	0.1828	0.1828	0.2021	RANDOM	24.6

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_d	23.8
c_angle_deg	1.34
c_improper_angle_d	0.8
c_bond_d	0.006
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot
c_mcbond_it
c_mcangle_it
c_scbond_it
c_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3362
Nucleic Acid Atoms
Solvent Atoms	493
Heterogen Atoms	92

Software

Software
Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALA	data scaling
CNS	phasing