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- PDB-2bfl: Bacillus cereus metallo-beta-lactamase (BcII) Arg (121) Cys mutan... -

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Basic information

Entry
Database: PDB / ID: 2bfl
TitleBacillus 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.
ComponentsMetallo-beta-lactamase type 2
KeywordsHYDROLASE / ZINC / METALLO-BETA-LACTAMASE / ANTIBIOTIC RESISTANCE
Function / homology
Function and homology information


antibiotic catabolic process / beta-lactamase activity / beta-lactamase / periplasmic space / response to antibiotic / zinc ion binding
Similarity search - Function
: / Beta-lactamases class B signature 2. / Beta-lactamases class B signature 1. / Beta-lactamase, class-B, conserved site / : / Metallo-beta-lactamase superfamily / Ribonuclease Z/Hydroxyacylglutathione hydrolase-like / Metallo-beta-lactamase superfamily / Metallo-beta-lactamase; Chain A / Metallo-beta-lactamase ...: / Beta-lactamases class B signature 2. / Beta-lactamases class B signature 1. / Beta-lactamase, class-B, conserved site / : / Metallo-beta-lactamase superfamily / Ribonuclease Z/Hydroxyacylglutathione hydrolase-like / Metallo-beta-lactamase superfamily / Metallo-beta-lactamase; Chain A / Metallo-beta-lactamase / Ribonuclease Z/Hydroxyacylglutathione hydrolase-like / 4-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
AZIDE ION / Metallo-beta-lactamase type 2
Similarity search - Component
Biological speciesBacillus cereus (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.8 Å
AuthorsDavies, A.M. / Rasia, R.M. / Vila, A.J. / Sutton, B.J. / Fabiane, S.M.
Citation
Journal: Biochemistry / Year: 2005
Title: Effect of Ph on the Active Site of an Arg121Cys Mutant of the Metallo-Beta-Lactamase from Bacillus Cereus: Implications for the Enzyme Mechanism
Authors: Davies, A.M. / Rasia, R.M. / Vila, A.J. / Sutton, B.J. / Fabiane, S.M.
#1: Journal: Biochemistry / Year: 2002
Title: Exploring the Role and Binding Affinity of a Second Zinc Equivalent in B. Cereus Metallo-Beta-Lactamase
Authors: Rasia, R.M. / Vila, A.J.
#2: Journal: Biochemistry / Year: 1998
Title: Crystal Structure of the Zinc-Dependent Beta-Lactamase from Bacillus Cereus at 1.9A Resolution: Binuclear Active Site with Features of a Mononuclear Enzyme
Authors: Fabiane, S.M. / Sohi, M.K. / Wan, T. / Payne, D.J. / Bateson, J.H. / Mitchell, T. / Sutton, B.J.
History
DepositionDec 8, 2004Deposition site: PDBE / Processing site: PDBE
Revision 1.0Mar 31, 2005Provider: repository / Type: Initial release
Revision 1.1Jun 2, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3May 8, 2019Group: Data collection / Experimental preparation / Other
Category: database_PDB_rev / database_PDB_rev_record ...database_PDB_rev / database_PDB_rev_record / exptl_crystal_grow / pdbx_database_proc / pdbx_database_status
Item: _exptl_crystal_grow.method / _pdbx_database_status.recvd_author_approval
Revision 1.4May 22, 2019Group: Data collection / Experimental preparation / Category: exptl_crystal_grow / Item: _exptl_crystal_grow.temp
Revision 1.5Dec 13, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.status_code_sf / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Metallo-beta-lactamase type 2
B: Metallo-beta-lactamase type 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)51,58822
Polymers49,8832
Non-polymers1,70520
Water8,881493
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A: Metallo-beta-lactamase type 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)25,6339
Polymers24,9411
Non-polymers6918
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPQS
2
B: Metallo-beta-lactamase type 2
hetero molecules


  • defined by author&software
  • 26 kDa, 1 polymers
Theoretical massNumber of molelcules
Total (without water)25,95513
Polymers24,9411
Non-polymers1,01412
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPQS
Unit cell
Length a, b, c (Å)67.535, 67.535, 178.712
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121
Components on special symmetry positions
IDModelComponents
11A-2159-

HOH

21A-2192-

HOH

31B-2152-

HOH

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Components

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Protein , 1 types, 2 molecules AB

#1: Protein Metallo-beta-lactamase type 2 / B2 metallo-beta-lactamase / Beta-lactamase II / Cephalosporinase / Metallo-beta-lactamase type II / ...B2 metallo-beta-lactamase / Beta-lactamase II / Cephalosporinase / Metallo-beta-lactamase type II / Metallothioprotein beta-lactamase II / Penicillinase / Zinc-requiring beta-lactamase II


Mass: 24941.482 Da / Num. of mol.: 2 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bacillus cereus (bacteria) / Gene: blm / Production host: ESCHERICHIA COLI (E. coli) / References: UniProt: P04190, beta-lactamase

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Non-polymers , 5 types, 513 molecules

#2: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 10 / Source method: obtained synthetically / Formula: C3H8O3
#3: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Zn
#4: Chemical
ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: SO4
#5: Chemical ChemComp-AZI / AZIDE ION


Mass: 42.020 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: N3
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 493 / Source method: isolated from a natural source / Formula: H2O

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Details

Compound detailsENGINEERED RESIDUE IN CHAIN A, CYS 121 ARG ENGINEERED RESIDUE IN CHAIN B, CYS 121 ARG BETA-LACTAM + ...ENGINEERED RESIDUE IN CHAIN A, CYS 121 ARG ENGINEERED RESIDUE IN CHAIN B, CYS 121 ARG BETA-LACTAM + H2O = SUBSTITUTED BETA-AMINO ACID.
Sequence detailsTHE SEQUENCE NUMBERING USED IN THIS ENTRY IS BASED ON A STANDARD NUMBERING SYSTEM DEVISED TO ALLOW ...THE SEQUENCE NUMBERING USED IN THIS ENTRY IS BASED ON A STANDARD NUMBERING SYSTEM DEVISED TO ALLOW FOR EASY COMPARISON BETWEEN DIFFERENT MEMBERS OF THE BACILLUS CEREUS METALLO-BETA-LACTAMASE FAMILY

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.1 Å3/Da / Density % sol: 42 %
Crystal growTemperature: 291 K / Method: vapor diffusion, hanging drop / pH: 5
Details: 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 ...Details: 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

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID14-1 / Wavelength: 0.934
DetectorType: ADSC CCD / Detector: CCD / Date: Feb 7, 2002
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.934 Å / Relative weight: 1
ReflectionResolution: 1.8→55.9 Å / Num. obs: 43889 / % possible obs: 98.7 % / Observed criterion σ(I): 2 / Redundancy: 6.8 % / Biso Wilson estimate: 16.67 Å2 / Rmerge(I) obs: 0.05 / Net I/σ(I): 9.5
Reflection shellResolution: 1.8→1.85 Å / Redundancy: 4.9 % / Rmerge(I) obs: 0.18 / Mean I/σ(I) obs: 3.6 / % possible all: 98.7

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Processing

Software
NameVersionClassification
CNS1.1refinement
DENZOdata reduction
SCALAdata scaling
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1BC2

1bc2


Resolution: 1.8→6 Å / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: MAXIMUM LIKELIHOOD
RfactorNum. reflection% reflectionSelection details
Rfree0.2021 4133 5 %RANDOM
Rwork0.1828 ---
obs0.1828 82092 98.7 %-
Solvent computationBsol: 69.2 Å2 / ksol: 0.36 e/Å3
Displacement parametersBiso mean: 24.6 Å2
Refine analyzeLuzzati coordinate error obs: 0.19 Å / Luzzati d res low obs: 6 Å / Luzzati sigma a obs: 0.17 Å
Refinement stepCycle: LAST / Resolution: 1.8→6 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3362 0 92 493 3947
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.006
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.34
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d23.8
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.8
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it
X-RAY DIFFRACTIONc_mcangle_it
X-RAY DIFFRACTIONc_scbond_it
X-RAY DIFFRACTIONc_scangle_it
LS refinement shellResolution: 1.8→1.88 Å / Total num. of bins used: 8
RfactorNum. reflection% reflection
Rwork0.2418 10163 -
Rfree-631 -
obs--98.7 %

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