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- PDB-4a3q: The 2.15 Angstrom resolution crystal structure of Staphylococcus ... -

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Basic information

Entry
Database: PDB / ID: 4a3q
TitleThe 2.15 Angstrom resolution crystal structure of Staphylococcus aureus alanine racemase
ComponentsALANINE RACEMASE 1
KeywordsISOMERASE / PLP-DEPENDENT ENZYMES
Function / homology
Function and homology information


alanine racemase / D-alanine biosynthetic process / alanine racemase activity / pyridoxal phosphate binding
Similarity search - Function
Alanine racemase, pyridoxal-phosphate attachment site / Alanine racemase pyridoxal-phosphate attachment site. / Alanine racemase / Alanine racemase, C-terminal / Alanine racemase, C-terminal domain / Alanine racemase, C-terminal domain / Alanine racemase, N-terminal / Alanine racemase, N-terminal domain / Lyase, Ornithine Decarboxylase; Chain A, domain 1 / Lyase, Ornithine Decarboxylase; Chain A, domain 1 ...Alanine racemase, pyridoxal-phosphate attachment site / Alanine racemase pyridoxal-phosphate attachment site. / Alanine racemase / Alanine racemase, C-terminal / Alanine racemase, C-terminal domain / Alanine racemase, C-terminal domain / Alanine racemase, N-terminal / Alanine racemase, N-terminal domain / Lyase, Ornithine Decarboxylase; Chain A, domain 1 / Lyase, Ornithine Decarboxylase; Chain A, domain 1 / Alanine racemase / Alanine racemase/group IV decarboxylase, C-terminal / PLP-binding barrel / TIM Barrel / Alpha-Beta Barrel / Beta Barrel / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
ACETATE ION / PYRIDOXAL-5'-PHOSPHATE / Alanine racemase 1
Similarity search - Component
Biological speciesSTAPHYLOCOCCUS AUREUS (bacteria)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.15 Å
AuthorsScaletti, E.R. / Luckner, S.R. / Krause, K.L.
CitationJournal: Acta Crystallogr.,Sect.D / Year: 2012
Title: Structural Features and Kinetic Characterization of Alanine Racemase from Staphylococcus Aureus (Mu50)
Authors: Scaletti, E.R. / Luckner, S.R. / Krause, K.L.
History
DepositionOct 4, 2011Deposition site: PDBE / Processing site: PDBE
Revision 1.0Dec 28, 2011Provider: repository / Type: Initial release
Revision 1.1Mar 28, 2012Group: Other
Revision 1.2Dec 20, 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 / struct_conn / struct_site
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 / _struct_conn.pdbx_leaving_atom_flag / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Remark 650 HELIX DETERMINATION METHOD: AUTHOR PROVIDED.
Remark 700 SHEET DETERMINATION METHOD: AUTHOR PROVIDED.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: ALANINE RACEMASE 1
B: ALANINE RACEMASE 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)87,58119
Polymers85,7202
Non-polymers1,86117
Water4,792266
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area8340 Å2
ΔGint-225.3 kcal/mol
Surface area26930 Å2
MethodPISA
Unit cell
Length a, b, c (Å)65.140, 113.940, 125.990
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 ALANINE RACEMASE 1


Mass: 42860.070 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) STAPHYLOCOCCUS AUREUS (bacteria) / Strain: MU50 / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): BL21(DE3) / Variant (production host): PLYSS / References: UniProt: P63479, alanine racemase
#2: Chemical ChemComp-PLP / PYRIDOXAL-5'-PHOSPHATE / VITAMIN B6 Phosphate


Mass: 247.142 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C8H10NO6P
#3: Chemical
ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 13 / Source method: obtained synthetically / Formula: SO4
#4: Chemical ChemComp-ACT / ACETATE ION


Mass: 59.044 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C2H3O2
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 266 / Source method: isolated from a natural source / Formula: H2O

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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: 2.78 Å3/Da / Density % sol: 55.83 % / Description: NONE
Crystal growpH: 5
Details: 100 MM SODIUM ACETATE TRIHYDRATE (PH 5.0), 1.8 M AMMONIUM SULFATE.

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Data collection

DiffractionMean temperature: 110 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU MICROMAX-007 HF / Wavelength: 1.5418
DetectorType: RIGAKU-MSC R-AXIS IV / Detector: IMAGE PLATE / Date: Oct 18, 2010 / Details: MIRRORS
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.15→51.91 Å / Num. obs: 49388 / % possible obs: 96.1 % / Observed criterion σ(I): 3 / Redundancy: 3.8 % / Biso Wilson estimate: 22.5 Å2 / Rmerge(I) obs: 0.06 / Net I/σ(I): 15.2
Reflection shellResolution: 2.15→2.27 Å / Redundancy: 3.7 % / Rmerge(I) obs: 0.19 / Mean I/σ(I) obs: 6.3 / % possible all: 91

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Processing

Software
NameVersionClassification
REFMAC5.5.0110refinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1SFT

1sft


Resolution: 2.15→39.41 Å / Cor.coef. Fo:Fc: 0.938 / Cor.coef. Fo:Fc free: 0.91 / SU B: 4.093 / SU ML: 0.11 / Cross valid method: THROUGHOUT / ESU R: 0.215 / ESU R Free: 0.188 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. RESIDUES 170-176 AND 257-274 ARE DISORDERED
RfactorNum. reflection% reflectionSelection details
Rfree0.2364 2519 5.1 %RANDOM
Rwork0.18846 ---
obs0.19084 46865 95.57 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso mean: 21.733 Å2
Baniso -1Baniso -2Baniso -3
1-0 Å20 Å20 Å2
2--0 Å20 Å2
3---0 Å2
Refinement stepCycle: LAST / Resolution: 2.15→39.41 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5632 0 103 266 6001
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0140.0225837
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.351.9697910
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.0875708
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.17924.866261
X-RAY DIFFRACTIONr_dihedral_angle_3_deg14.219151031
X-RAY DIFFRACTIONr_dihedral_angle_4_deg16.9551526
X-RAY DIFFRACTIONr_chiral_restr0.090.2896
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.0214288
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it0.8811.53554
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it1.65625756
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it2.42732283
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it4.0334.52154
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.152→2.208 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.251 164 -
Rwork0.211 3055 -
obs--86.28 %

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