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- PDB-1mws: Structure of nitrocefin acyl-Penicillin binding protein 2a from m... -

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Basic information

Entry
Database: PDB / ID: 1mws
TitleStructure of nitrocefin acyl-Penicillin binding protein 2a from methicillin resistant Staphylococcus aureus strain 27r at 2.00 A resolution.
Componentspenicillin-binding protein 2a
KeywordsBIOSYNTHETIC PROTEIN / penicillin binding protein / beta-lactam / d / d-transpeptidase / d-carboxypeptidase / nitrocefin
Function / homology
Function and homology information


peptidoglycan glycosyltransferase / peptidoglycan L,D-transpeptidase activity / glycosyltransferase activity / penicillin binding / cell wall organization / response to antibiotic / plasma membrane
Similarity search - Function
Penicillin-binding protein 2a; domain 3 / NTF2-like; domain 1 / NTF2-like N-terminal transpeptidase / NTF2-like N-terminal transpeptidase domain / Penicillin-binding protein 2a (Domain 2) / Penicillin-binding protein 2a (Domain 2) / Ribosomal Protein L30; Chain: A, / Penicillin-binding protein, dimerisation domain / Penicillin-binding Protein dimerisation domain / Penicillin-binding protein, dimerisation domain superfamily ...Penicillin-binding protein 2a; domain 3 / NTF2-like; domain 1 / NTF2-like N-terminal transpeptidase / NTF2-like N-terminal transpeptidase domain / Penicillin-binding protein 2a (Domain 2) / Penicillin-binding protein 2a (Domain 2) / Ribosomal Protein L30; Chain: A, / Penicillin-binding protein, dimerisation domain / Penicillin-binding Protein dimerisation domain / Penicillin-binding protein, dimerisation domain superfamily / : / Penicillin-binding protein, transpeptidase / Penicillin binding protein transpeptidase domain / NTF2-like domain superfamily / Nuclear Transport Factor 2; Chain: A, / Beta-lactamase / DD-peptidase/beta-lactamase superfamily / Beta-lactamase/transpeptidase-like / Roll / Alpha-Beta Complex / 2-Layer Sandwich / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
: / Penicillin-binding protein 2
Similarity search - Component
Biological speciesStaphylococcus aureus (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / Resolution: 2 Å
AuthorsLim, D.C. / Strynadka, N.C.J.
CitationJournal: Nat.Struct.Biol. / Year: 2002
Title: Structural basis for the beta lactam resistance of PBP2a from methicillin-resistant Staphylococcus aureus.
Authors: Lim, D. / Strynadka, N.C.
History
DepositionOct 1, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 6, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 28, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Mar 26, 2025Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _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.ptnr1_symmetry / _pdbx_struct_conn_angle.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_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.ptnr3_symmetry / _pdbx_struct_conn_angle.value / _struct_conn.conn_type_id / _struct_conn.id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.ptnr1_auth_asym_id / _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.ptnr1_symmetry / _struct_conn.ptnr2_auth_asym_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 / _struct_conn.ptnr2_symmetry / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Remark 999 SEQUENCE At the time of processing, the sequence for this strain was not present in a sequence ... SEQUENCE At the time of processing, the sequence for this strain was not present in a sequence database. However, the protein crystallized contains the engineered mutation Y23M and the first 22 residues were deleted.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: penicillin-binding protein 2a
B: penicillin-binding protein 2a
hetero molecules


Theoretical massNumber of molelcules
Total (without water)149,62514
Polymers148,5832
Non-polymers1,04112
Water7,098394
1
A: penicillin-binding protein 2a
hetero molecules


Theoretical massNumber of molelcules
Total (without water)74,9258
Polymers74,2921
Non-polymers6337
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: penicillin-binding protein 2a
hetero molecules


Theoretical massNumber of molelcules
Total (without water)74,7006
Polymers74,2921
Non-polymers4085
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)80.582, 100.747, 187.244
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein penicillin-binding protein 2a / SauPBP2a


Mass: 74291.742 Da / Num. of mol.: 2 / Fragment: residues 23-668 / Mutation: Y23M, delta 1-22
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Staphylococcus aureus (bacteria) / Production host: Escherichia coli (E. coli) / Strain (production host): BL21 lamda DE3 / References: UniProt: Q93IC2
#2: Chemical
ChemComp-CD / CADMIUM ION


Mass: 112.411 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: Cd
#3: Chemical
ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Cl
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 394 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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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: 2.56 Å3/Da / Density % sol: 51.9 %
Crystal growTemperature: 291 K / Method: vapor diffusion, hanging drop / pH: 7
Details: CdCl2, PEG550MME, HEPES, NaCl, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Crystal grow
*PLUS
Temperature: 18 ℃
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formulaDetails
120 mg/mlprotein1drop
220 %(v/v)PEG550 MME1reservoir
30.88 M1reservoirNaCl
4100 mMHEPES1reservoirpH7.
516 mM1reservoirCdCl2

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X8C / Wavelength: 1 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Jan 25, 2002
RadiationMonochromator: SiO2 / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2→25 Å / Num. all: 100115 / Num. obs: 100115 / % possible obs: 96.6 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 5.2 % / Biso Wilson estimate: 16.1 Å2 / Rsym value: 0.076 / Net I/σ(I): 16.8
Reflection shellResolution: 2→2.07 Å / Mean I/σ(I) obs: 2.9 / Num. unique all: 7963 / Rsym value: 0.312 / % possible all: 77.8
Reflection
*PLUS
Highest resolution: 2 Å / Lowest resolution: 25 Å / Rmerge(I) obs: 0.076
Reflection shell
*PLUS
Highest resolution: 2 Å / Lowest resolution: 2.1 Å / % possible obs: 77.8 % / Rmerge(I) obs: 0.312 / Mean I/σ(I) obs: 3.2

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNS1.1refinement
RefinementResolution: 2→24.96 Å / Rfactor Rfree error: 0.004 / Data cutoff high absF: 3349086.19 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.274 5059 5.1 %RANDOM
Rwork0.234 ---
obs0.234 100014 96.5 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 41.8707 Å2 / ksol: 0.349995 e/Å3
Displacement parametersBiso mean: 37.1 Å2
Baniso -1Baniso -2Baniso -3
1--6.16 Å20 Å20 Å2
2--21.66 Å20 Å2
3----15.5 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.34 Å0.29 Å
Luzzati d res low-5 Å
Luzzati sigma a0.44 Å0.41 Å
Refinement stepCycle: LAST / Resolution: 2→24.96 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms10186 0 12 394 10592
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.01
X-RAY DIFFRACTIONc_angle_deg1.5
X-RAY DIFFRACTIONc_dihedral_angle_d23.3
X-RAY DIFFRACTIONc_improper_angle_d0.89
X-RAY DIFFRACTIONc_mcbond_it1.331.5
X-RAY DIFFRACTIONc_mcangle_it2.072
X-RAY DIFFRACTIONc_scbond_it2.142
X-RAY DIFFRACTIONc_scangle_it3.142.5
LS refinement shellResolution: 2→2.13 Å / Rfactor Rfree error: 0.013 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.348 726 5.1 %
Rwork0.343 13374 -
obs--82.6 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1MCANC_REP.PARAMMCANC.TOP
X-RAY DIFFRACTION2ION.PARAMION.TOP
X-RAY DIFFRACTION3WATER_REP.PARAMWATER.TOP
Refinement
*PLUS
Highest resolution: 2 Å / Lowest resolution: 25 Å / % reflection Rfree: 5 % / Rfactor obs: 0.234 / Rfactor Rfree: 0.274 / Rfactor Rwork: 0.235
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.0094
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg23.3
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.89
LS refinement shell
*PLUS
Rfactor Rfree: 0.348 / Rfactor Rwork: 0.343

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