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- PDB-3vda: E. coli (lacZ) beta-galactosidase (N460T) -

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Basic information

Entry
Database: PDB / ID: 3vda
TitleE. coli (lacZ) beta-galactosidase (N460T)
ComponentsBeta-galactosidase
KeywordsHYDROLASE / transition state stabilization / substrate binding / 2-stage binding / TIM barrel (alpha/beta barrel) / jelly-roll barrel / immunoglobulin / beta supersandwich / glycosidase
Function / homology
Function and homology information


alkali metal ion binding / lactose catabolic process / beta-galactosidase complex / beta-galactosidase / beta-galactosidase activity / carbohydrate binding / magnesium ion binding / identical protein binding
Similarity search - Function
Glycoside hydrolase, family 2, beta-galactosidase / Beta galactosidase small chain/ domain 5 / Beta-galactosidase, domain 4 / Beta galactosidase small chain / Beta-galactosidase, domain 4 / Beta galactosidase small chain / : / Glycoside hydrolase, family 2, active site / Glycosyl hydrolases family 2 acid/base catalyst. / Glycoside hydrolase, family 2, conserved site ...Glycoside hydrolase, family 2, beta-galactosidase / Beta galactosidase small chain/ domain 5 / Beta-galactosidase, domain 4 / Beta galactosidase small chain / Beta-galactosidase, domain 4 / Beta galactosidase small chain / : / Glycoside hydrolase, family 2, active site / Glycosyl hydrolases family 2 acid/base catalyst. / Glycoside hydrolase, family 2, conserved site / Glycosyl hydrolases family 2 signature 1. / Beta-galactosidase; Chain A, domain 5 - #10 / Glycoside hydrolase, family 2 / Glycosyl hydrolases family 2, sugar binding domain / Glycoside hydrolase family 2, catalytic domain / Glycosyl hydrolases family 2, sugar binding domain / Glycosyl hydrolases family 2, TIM barrel domain / Glycoside hydrolase, family 2, immunoglobulin-like beta-sandwich / Glycosyl hydrolases family 2 / Beta-Galactosidase/glucuronidase domain superfamily / Glycoside hydrolase-type carbohydrate-binding / Beta-galactosidase; Chain A, domain 5 / Galactose mutarotase-like domain superfamily / Galactose-binding domain-like / Galactose-binding-like domain superfamily / Distorted Sandwich / Glycosidases / Glycoside hydrolase superfamily / Jelly Rolls / TIM Barrel / Alpha-Beta Barrel / Immunoglobulin-like fold / Immunoglobulins / Immunoglobulin-like / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 2.5 Å
AuthorsWheatley, R.W. / Kappelhoff, J.C. / Hahn, J.N. / Dugdale, M.L. / Dutkoski, M.J. / Tamman, S.D. / Fraser, M.E. / Huber, R.E.
CitationJournal: Arch.Biochem.Biophys. / Year: 2012
Title: Substitution for Asn460 cripples {beta}-galactosidase (Escherichia coli) by increasing substrate affinity and decreasing transition state stability.
Authors: Wheatley, R.W. / Kappelhoff, J.C. / Hahn, J.N. / Dugdale, M.L. / Dutkoski, M.J. / Tamman, S.D. / Fraser, M.E. / Huber, R.E.
History
DepositionJan 4, 2012Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 11, 2012Provider: repository / Type: Initial release
Revision 1.1Jun 19, 2013Group: Database references
Revision 1.2Jul 17, 2019Group: Data collection / Refinement description / Category: software
Item: _software.classification / _software.name / _software.version
Revision 1.3Sep 13, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / struct_ref_seq_dif / 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.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_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.value / _struct_conn.pdbx_dist_value / _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.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_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Beta-galactosidase
B: Beta-galactosidase
C: Beta-galactosidase
D: Beta-galactosidase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)481,84854
Polymers478,9234
Non-polymers2,92550
Water29,0221611
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area27280 Å2
ΔGint-101 kcal/mol
Surface area143260 Å2
MethodPISA
Unit cell
Length a, b, c (Å)152.596, 164.691, 203.245
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
Beta-galactosidase / Beta-gal / Lactase


Mass: 119730.758 Da / Num. of mol.: 4 / Mutation: N460T
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: lacZ / Plasmid: pBAD/HIS/LacZ / Production host: Escherichia coli (E. coli) / Strain (production host): LMG194 / References: UniProt: P00722, beta-galactosidase
#2: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: Mg
#3: Chemical
ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 10 / Source method: obtained synthetically / Formula: Na
#4: Chemical...
ChemComp-DMS / DIMETHYL SULFOXIDE


Mass: 78.133 Da / Num. of mol.: 32 / Source method: obtained synthetically / Formula: C2H6OS / Comment: DMSO, precipitant*YM
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 1611 / 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: 2.67 Å3/Da / Density % sol: 53.87 %
Crystal growTemperature: 288 K / Method: vapor diffusion, hanging drop / pH: 6.5
Details: 10% PEG8000, 100 mM Bis-Tris, pH 6.5, 200 mM magnesium chloride, 100 mM sodium chloride, 10 mM DTT, VAPOR DIFFUSION, HANGING DROP, temperature 288K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ALS / Beamline: 8.3.1 / Wavelength: 1.11587 Å
DetectorType: ADSC QUANTUM 210 / Detector: CCD / Date: Feb 1, 2004
RadiationMonochromator: KHOZU double flat crystal Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.11587 Å / Relative weight: 1
ReflectionResolution: 2.5→200 Å / Num. all: 166162 / Num. obs: 166162 / % possible obs: 94 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.6 % / Biso Wilson estimate: 40.8 Å2 / Rmerge(I) obs: 0.103 / Net I/σ(I): 11.07
Reflection shellResolution: 2.5→2.54 Å / Redundancy: 2.3 % / Rmerge(I) obs: 0.237 / Mean I/σ(I) obs: 2.26 / Num. unique all: 4800 / % possible all: 54.8

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Processing

Software
NameVersionClassification
REFMAC5.5.0109refinement
CNSrefinement
ADSCQuantumdata collection
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB ENTRY 1DP0

1dp0


Resolution: 2.5→46.05 Å / Cor.coef. Fo:Fc: 0.953 / Cor.coef. Fo:Fc free: 0.914 / SU B: 8.458 / SU ML: 0.19 / Cross valid method: THROUGHOUT / ESU R: 0.501 / ESU R Free: 0.273 / Stereochemistry target values: MAXIMUM LIKELIHOOD
RfactorNum. reflection% reflectionSelection details
Rfree0.23723 2358 1.4 %CONSISTENT WITH PREVIOUS STRUCTURES
Rwork0.174 ---
all0.17488 163719 --
obs0.17488 163719 100 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 44.386 Å2
Baniso -1Baniso -2Baniso -3
1--3.21 Å20 Å20 Å2
2--4.24 Å20 Å2
3----1.03 Å2
Refinement stepCycle: LAST / Resolution: 2.5→46.05 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms32624 0 146 1611 34381
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0090.02133742
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.151.92945932
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.97354056
X-RAY DIFFRACTIONr_dihedral_angle_2_deg35.74523.731748
X-RAY DIFFRACTIONr_dihedral_angle_3_deg14.697155180
X-RAY DIFFRACTIONr_dihedral_angle_4_deg13.75215264
X-RAY DIFFRACTIONr_chiral_restr0.0790.24816
X-RAY DIFFRACTIONr_gen_planes_refined0.0050.02126648
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_it1.464220324
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it2.5452.532756
X-RAY DIFFRACTIONr_scbond_it3.7133.513418
X-RAY DIFFRACTIONr_scangle_it5.4194.513176
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.5→2.565 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.301 140 -
Rwork0.211 8241 -
obs--100 %

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