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- PDB-6ik5: Crystal structure of tomato beta-galactosidase (TBG) 4 in complex... -

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Basic information

Entry
Database: PDB / ID: 6ik5
TitleCrystal structure of tomato beta-galactosidase (TBG) 4 in complex with galactose
ComponentsBeta-galactosidase
KeywordsHYDROLASE / Glycoside hydrolase / plant cell wall related enzyme / fruit ripening
Function / homology
Function and homology information


beta-galactosidase / beta-galactosidase activity / carbohydrate metabolic process
Similarity search - Function
Beta-galactosidase, beta-sandwich domain / Beta-sandwich domain in beta galactosidase / : / Beta-galactosidase, galactose-binding domain / Glycoside hydrolase, family 35, conserved site / Glycosyl hydrolases family 35 putative active site. / Glycoside hydrolase 35, catalytic domain / Glycosyl hydrolases family 35 / Glycoside hydrolase, family 35 / Galactose-binding-like domain superfamily / Glycoside hydrolase superfamily
Similarity search - Domain/homology
beta-D-galactopyranose / Beta-galactosidase
Similarity search - Component
Biological speciesSolanum lycopersicum (tomato)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.82 Å
AuthorsMatsuyama, K. / Nakae, S. / Igarashi, K. / Tada, T. / Ishimaru, M.
CitationJournal: Planta / Year: 2020
Title: Substrate-recognition mechanism of tomato beta-galactosidase 4 using X-ray crystallography and docking simulation.
Authors: Matsuyama, K. / Kondo, T. / Igarashi, K. / Sakamoto, T. / Ishimaru, M.
History
DepositionOct 15, 2018Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Nov 28, 2018Provider: repository / Type: Initial release
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_validate_close_contact / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _pdbx_entity_nonpoly.entity_id / _pdbx_entity_nonpoly.name / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_close_contact.auth_seq_id_2 / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Dec 23, 2020Group: Database references / Structure summary / Category: chem_comp / citation / citation_author
Item: _chem_comp.pdbx_synonyms / _citation.country ..._chem_comp.pdbx_synonyms / _citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 2.2Nov 22, 2023Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 2.3Oct 9, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

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


Theoretical massNumber of molelcules
Total (without water)161,2218
Polymers159,5702
Non-polymers1,6526
Water15,943885
1
A: Beta-galactosidase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)80,6114
Polymers79,7851
Non-polymers8263
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area1230 Å2
ΔGint15 kcal/mol
Surface area26030 Å2
MethodPISA
2
B: Beta-galactosidase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)80,6114
Polymers79,7851
Non-polymers8263
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area1200 Å2
ΔGint17 kcal/mol
Surface area26120 Å2
MethodPISA
Unit cell
Length a, b, c (Å)92.136, 95.335, 158.327
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: 79784.945 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Solanum lycopersicum (tomato) / Gene: TBG4 / Plasmid: pPICZalfaA / Production host: Komagataella pastoris (fungus) / Strain (production host): SMD1168H / References: UniProt: O81100, beta-galactosidase
#2: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#3: Sugar ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
#4: Sugar ChemComp-GAL / beta-D-galactopyranose / beta-D-galactose / D-galactose / galactose


Type: D-saccharide, beta linking / Mass: 180.156 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Formula: C6H12O6 / Feature type: SUBJECT OF INVESTIGATION
IdentifierTypeProgram
DGalpbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
b-D-galactopyranoseCOMMON NAMEGMML 1.0
b-D-GalpIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GalSNFG CARBOHYDRATE SYMBOLGMML 1.0
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 885 / 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: 2.18 Å3/Da / Density % sol: 43.55 %
Crystal growTemperature: 277 K / Method: vapor diffusion, sitting drop / pH: 7.3 / Details: 16% (w/v) PEG10000, 0.1M HEPES

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: SPring-8 / Beamline: BL38B1 / Wavelength: 1 Å
DetectorType: MARMOSAIC 225 mm CCD / Detector: CCD / Date: Sep 19, 2016
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 1.82→41.28 Å / Num. obs: 123244 / % possible obs: 98.34 % / Redundancy: 7.1 % / Rmerge(I) obs: 0.052 / Rpim(I) all: 0.031 / Rrim(I) all: 0.083 / Net I/σ(I): 23.4
Reflection shellResolution: 1.82→1.885 Å / Rmerge(I) obs: 0.615 / Mean I/σ(I) obs: 2.68 / Num. unique obs: 11826 / Rpim(I) all: 0.297 / Rrim(I) all: 0.782 / % possible all: 95.47

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Processing

Software
NameVersionClassification
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing
Cootmodel building
PHENIXrefinement
REFMAC5.8.0232refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 3W5G

3w5g


Resolution: 1.82→41.28 Å / Cor.coef. Fo:Fc: 0.963 / Cor.coef. Fo:Fc free: 0.949 / Cross valid method: THROUGHOUT / ESU R: 0.133 / ESU R Free: 0.124 / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.20867 6178 5 %RANDOM
Rwork0.17159 ---
obs0.17344 117286 98.04 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å
Displacement parametersBiso mean: 24.951 Å2
Baniso -1Baniso -2Baniso -3
1--0.01 Å2-0 Å20 Å2
2--0.01 Å2-0 Å2
3----0.01 Å2
Refinement stepCycle: 1 / Resolution: 1.82→41.28 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms11062 0 108 885 12055
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0150.01311510
X-RAY DIFFRACTIONr_bond_other_d0.0360.01710216
X-RAY DIFFRACTIONr_angle_refined_deg1.861.65415660
X-RAY DIFFRACTIONr_angle_other_deg2.4171.58423802
X-RAY DIFFRACTIONr_dihedral_angle_1_deg7.25551408
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.43122.75560
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.833151806
X-RAY DIFFRACTIONr_dihedral_angle_4_deg18.6331552
X-RAY DIFFRACTIONr_chiral_restr0.1210.21434
X-RAY DIFFRACTIONr_gen_planes_refined0.0090.0212922
X-RAY DIFFRACTIONr_gen_planes_other0.0150.022486
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_it2.7822.545638
X-RAY DIFFRACTIONr_mcbond_other2.782.5395637
X-RAY DIFFRACTIONr_mcangle_it4.1173.7997044
X-RAY DIFFRACTIONr_mcangle_other4.1173.87045
X-RAY DIFFRACTIONr_scbond_it3.382.7415872
X-RAY DIFFRACTIONr_scbond_other3.382.7415872
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_scangle_other4.8383.9918617
X-RAY DIFFRACTIONr_long_range_B_refined9.10430.08313470
X-RAY DIFFRACTIONr_long_range_B_other9.0929.8813332
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 1.817→1.864 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.273 414 -
Rwork0.23 7958 -
obs--90.7 %

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