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- PDB-3i3e: E. COLI (lacZ) BETA-GALACTOSIDASE (M542A) -

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Basic information

Entry
Database: PDB / ID: 3i3e
TitleE. COLI (lacZ) BETA-GALACTOSIDASE (M542A)
ComponentsBeta-galactosidase
KeywordsHYDROLASE / BETA-GALACTOSIDASE / TIM BARREL (ALPHA/BETA BARREL) / JELLY-ROLL BARREL / IMMUNOGLOBULIN BETA SUPERSANDWHICH / Glycosidase
Function / homology
Function and homology information


alkali metal ion binding / lactose catabolic process / beta-galactosidase complex / beta-galactosidase / beta-galactosidase activity / carbohydrate binding / carbohydrate metabolic process / 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
Beta-galactosidase / Beta-galactosidase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.1 Å
AuthorsDugdale, M.L. / Dymianiw, D. / Minhas, B. / Huber, R.E.
CitationJournal: Biochem.Cell Biol. / Year: 2010
Title: Role of Met-542 as a guide for the conformational changes of Phe-601 that occur during the reaction of β-galactosidase (Escherichia coli).
Authors: Dugdale, M.L. / Dymianiw, D.L. / Minhas, B.K. / D'Angelo, I. / Huber, R.E.
History
DepositionJun 30, 2009Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 12, 2010Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Aug 10, 2011Group: Database references
Revision 1.3Oct 13, 2021Group: Database references / Derived calculations
Category: database_2 / pdbx_struct_conn_angle ...database_2 / 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
Revision 1.4Sep 6, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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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)476,909168
Polymers465,7854
Non-polymers11,124164
Water65,0523611
1


  • Idetical with deposited unit
  • defined by software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area16990 Å2
ΔGint-31 kcal/mol
Surface area138180 Å2
MethodPISA
Unit cell
Length a, b, c (Å)149.701, 168.417, 200.709
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


Mass: 116446.156 Da / Num. of mol.: 4 / Fragment: Residues 10-1024 / Mutation: M543A
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): LMG104
References: UniProt: B8LFD6, UniProt: P00722*PLUS, beta-galactosidase
#2: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 15 / Source method: obtained synthetically / Formula: Mg
#3: Chemical
ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 16 / Source method: obtained synthetically / Formula: Na
#4: Chemical...
ChemComp-DMS / DIMETHYL SULFOXIDE


Mass: 78.133 Da / Num. of mol.: 133 / Source method: obtained synthetically / Formula: C2H6OS / Comment: DMSO, precipitant*YM
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 3611 / 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: 2.72 Å3/Da / Density % sol: 54.71 %
Crystal growTemperature: 288 K / Method: vapor diffusion, hanging drop / pH: 6.5
Details: PEG 8000, NaCl, MgCl2, DTT, Bis-Tris, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 288K

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Data collection

Diffraction sourceSource: SYNCHROTRON / Site: ALS / Beamline: 8.3.1 / Wavelength: 1.11587 Å
DetectorType: ADSC QUANTUM 210 / Detector: CCD / Date: Oct 11, 2007 / Details: KOHZU: Double Crystal SI(111)
RadiationMonochromator: SI(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.11587 Å / Relative weight: 1
ReflectionResolution: 2.1→17.7 Å / Num. all: 293082 / Num. obs: 293082 / % possible obs: 99.8 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.96 % / Biso Wilson estimate: 10.9 Å2 / Limit h max: 71 / Limit h min: 0 / Limit k max: 80 / Limit k min: 0 / Limit l max: 95 / Limit l min: 0 / Observed criterion F max: 5777720.99 / Observed criterion F min: 37.576 / Rmerge(I) obs: 0.109

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Processing

Software
NameVersionClassificationNB
CNS1.2refinement
ADSCQuantumdata collection
MOSFLMdata reduction
SCALAdata scaling
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB entry 1DP0

1dp0


Resolution: 2.1→17.7 Å / Rfactor Rfree error: 0.003 / Occupancy max: 1 / Occupancy min: 0.5 / Isotropic thermal model: Isotropic / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.221 4227 1.4 %1.5
Rwork0.182 ---
all0.183 293466 --
obs0.183 293081 99.9 %-
Solvent computationSolvent model: CNS bulk solvent model used / Bsol: 64.7756 Å2 / ksol: 0.4 e/Å3
Displacement parametersBiso max: 168.75 Å2 / Biso mean: 18.95 Å2 / Biso min: 1.35 Å2
Baniso -1Baniso -2Baniso -3
1--2.23 Å20 Å20 Å2
2--2.26 Å20 Å2
3----0.03 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.25 Å0.2 Å
Luzzati d res low-5 Å
Luzzati sigma a0.23 Å0.18 Å
Luzzati d res high-2.1
Refinement stepCycle: LAST / Resolution: 2.1→17.7 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms32479 0 563 3611 36653
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.005
X-RAY DIFFRACTIONx_angle_deg1.4
X-RAY DIFFRACTIONx_torsion_deg25.3
X-RAY DIFFRACTIONx_torsion_impr_deg0.95
LS refinement shell

Refine-ID: X-RAY DIFFRACTION

Resolution (Å)Rfactor RfreeNum. reflection Rfree% reflection Rfree (%)Rfactor RworkNum. reflection RworkRfactor Rfree errorNum. reflection allNum. reflection obs% reflection obs (%)
2.1-2.20.2785441.50.224357620.012364663630699.6
2.2-2.310.2385181.40.209358980.01364963641699.8
2.31-2.460.245201.40.188359660.011365433648699.8
2.46-2.640.2335741.60.183358570.01364983643199.8
2.64-2.910.2284971.40.181360590.01366373655699.8
2.91-3.330.2175281.40.173360700.009366663659899.8
3.33-4.180.1915351.50.16362550.008368963679099.7
4.18-17.70.2075111.40.184369870.009375593749899.8

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