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Basic information

Entry
Database: PDB / ID: 1sbf
TitleSOYBEAN AGGLUTININ
ComponentsSOYBEAN AGGLUTININ
KeywordsLECTIN / AGGLUTININ
Function / homology
Function and homology information


carbohydrate binding
Similarity search - Function
Legume lectin / Legume lectin, alpha chain, conserved site / Legume lectins alpha-chain signature. / Legume lectins beta-chain signature. / Legume lectin domain / Legume lectin, beta chain, Mn/Ca-binding site / Legume lectin domain / Jelly Rolls - #200 / Concanavalin A-like lectin/glucanase domain superfamily / Jelly Rolls ...Legume lectin / Legume lectin, alpha chain, conserved site / Legume lectins alpha-chain signature. / Legume lectins beta-chain signature. / Legume lectin domain / Legume lectin, beta chain, Mn/Ca-binding site / Legume lectin domain / Jelly Rolls - #200 / Concanavalin A-like lectin/glucanase domain superfamily / Jelly Rolls / Sandwich / Mainly Beta
Similarity search - Domain/homology
Biological speciesGlycine max (soybean)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.43 Å
AuthorsOlsen, L.R. / Dessen, A. / Gupta, D. / Sabesan, S. / Brewer, C.F. / Sacchettini, J.C.
Citation
Journal: Biochemistry / Year: 1997
Title: X-ray crystallographic studies of unique cross-linked lattices between four isomeric biantennary oligosaccharides and soybean agglutinin.
Authors: Olsen, L.R. / Dessen, A. / Gupta, D. / Sabesan, S. / Sacchettini, J.C. / Brewer, C.F.
#1: Journal: Biochemistry / Year: 1995
Title: X-Ray Crystal Structure of the Soybean Agglutinin Cross-Linked with a Biantennary Analog of the Blood Group I Carbohydrate Antigen
Authors: Dessen, A. / Gupta, D. / Sabesan, S. / Brewer, C.F. / Sacchettini, J.C.
History
DepositionOct 21, 1997Processing site: BNL
Revision 1.0Apr 22, 1998Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Non-polymer description / Version format compliance
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_struct_conn_angle / pdbx_unobs_or_zero_occ_atoms / pdbx_validate_symm_contact / struct_asym / struct_conn / struct_conn_type / struct_site / struct_site_gen
Item: _atom_site.auth_asym_id / _atom_site.auth_seq_id ..._atom_site.auth_asym_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_entity_id / _chem_comp.name / _chem_comp.type / _pdbx_struct_assembly_gen.asym_id_list / _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_label_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 / _pdbx_unobs_or_zero_occ_atoms.auth_asym_id / _pdbx_unobs_or_zero_occ_atoms.auth_seq_id / _pdbx_validate_symm_contact.auth_asym_id_1 / _pdbx_validate_symm_contact.auth_asym_id_2 / _pdbx_validate_symm_contact.auth_seq_id_1 / _pdbx_validate_symm_contact.auth_seq_id_2 / _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.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_type.id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Aug 9, 2023Group: Database references / Refinement description / Structure summary
Category: chem_comp / database_2 / pdbx_initial_refinement_model
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 2.2May 22, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: SOYBEAN AGGLUTININ
hetero molecules


Theoretical massNumber of molelcules
Total (without water)28,0744
Polymers27,5961
Non-polymers4783
Water39622
1
A: SOYBEAN AGGLUTININ
hetero molecules

A: SOYBEAN AGGLUTININ
hetero molecules

A: SOYBEAN AGGLUTININ
hetero molecules

A: SOYBEAN AGGLUTININ
hetero molecules


Theoretical massNumber of molelcules
Total (without water)112,29716
Polymers110,3834
Non-polymers1,91312
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation10_755-x+2,-y,z1
crystal symmetry operation8_666-y+1,-x+1,-z+11
crystal symmetry operation15_646y+1,x-1,-z+11
Unit cell
Length a, b, c (Å)122.640, 122.640, 90.560
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number98
Space group name H-MI4122

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Components

#1: Protein SOYBEAN AGGLUTININ /


Mass: 27595.816 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Glycine max (soybean) / References: UniProt: P05046
#2: Polysaccharide beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 383.349 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGalpb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,2,1/[a2122h-1b_1-5_2*NCC/3=O][a2112h-1b_1-5]/1-2/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-Galp]{}}LINUCSPDB-CARE
#3: Chemical ChemComp-MN / MANGANESE (II) ION


Mass: 54.938 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mn
#4: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca
#5: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 22 / 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: 2.84 Å3/Da / Density % sol: 56.7 %
Crystal growpH: 7.2
Details: PROTEIN WAS CRYSTALLIZED USING 3 MICROLITERS OF LECTIN SOLUTION (34 MG/ML) AND 755 MICROMOLAR SUGAR IN 0.1 M HEPES, PH 7.2, 1MM CACL2, 1MM MNCL2, AND 0.15 M NACL, WHICH WERE MIXED WITH 3 ...Details: PROTEIN WAS CRYSTALLIZED USING 3 MICROLITERS OF LECTIN SOLUTION (34 MG/ML) AND 755 MICROMOLAR SUGAR IN 0.1 M HEPES, PH 7.2, 1MM CACL2, 1MM MNCL2, AND 0.15 M NACL, WHICH WERE MIXED WITH 3 MICROLITER OF PRECIPITANT SOLUTION (SAME BUFFER, EXCEPT THAT THE SALT CONCENTRATION WAS 0.5M
Crystal
*PLUS
Density % sol: 70 %
Crystal grow
*PLUS
Temperature: 4 ℃ / Method: vapor diffusion, hanging drop / Details: Dessen, A., (1995) Biochemistry, 34, 4933.
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
117 mg/mlSBA1drop
20.755 mMsugar1drop
30.1 MHEPES1drop
41 mM1dropCaCl2
51 mM1dropMnCl2
60.375 M1dropNaCl
70.1 MHEPES1reservoir
81 mM1reservoirCaCl2
91 mM1reservoirMnCl2
100.5 M1reservoirNaCl

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Data collection

DiffractionMean temperature: 287 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RUH2R / Wavelength: 1.5418
DetectorType: SIEMENS / Detector: AREA DETECTOR / Date: Oct 1, 1995 / Details: COLLIMATOR
RadiationMonochromator: NI FILTER / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.42→25 Å / Num. obs: 12224 / % possible obs: 91 % / Observed criterion σ(I): 2 / Redundancy: 4.74 % / Biso Wilson estimate: 26.2 Å2 / Rmerge(I) obs: 0.0128 / Rsym value: 0.0128 / Net I/σ(I): 13.9
Reflection shellResolution: 2.42→2.77 Å / Redundancy: 3.92 % / Rmerge(I) obs: 0.02999 / Mean I/σ(I) obs: 3.7 / Rsym value: 0.02999 / % possible all: 85
Reflection
*PLUS
Num. measured all: 57894
Reflection shell
*PLUS
% possible obs: 85 %

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Processing

Software
NameVersionClassification
AMoREphasing
TNT5Erefinement
XENGENdata reduction
XENGENdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1SBA

1sba
PDB Unreleased entry


Resolution: 2.43→99 Å / Isotropic thermal model: TNT BCORREL / Stereochemistry target values: TNT PROTGEO
RfactorNum. reflection% reflection
Rwork0.187 --
all-11777 -
obs-11777 88 %
Solvent computationSolvent model: TNT DEFAULT / Bsol: 122 Å2 / ksol: 0.75 e/Å3
Refinement stepCycle: LAST / Resolution: 2.43→99 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1707 0 27 22 1756
Refine LS restraints
Refine-IDTypeDev idealNumberWeight
X-RAY DIFFRACTIONt_bond_d0.01135382.2
X-RAY DIFFRACTIONt_angle_deg1.94648484.2
X-RAY DIFFRACTIONt_dihedral_angle_d18.68619800
X-RAY DIFFRACTIONt_incorr_chiral_ct0
X-RAY DIFFRACTIONt_pseud_angle
X-RAY DIFFRACTIONt_trig_c_planes0.017772
X-RAY DIFFRACTIONt_gen_planes0.0245285
X-RAY DIFFRACTIONt_it
X-RAY DIFFRACTIONt_nbd0.0622910
Software
*PLUS
Name: TNT / Version: 5E / Classification: refinement
Refinement
*PLUS
Rfactor all: 0.187
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev idealWeight
X-RAY DIFFRACTIONt_dihedral_angle_d
X-RAY DIFFRACTIONt_dihedral_angle_deg18.6860
X-RAY DIFFRACTIONt_planar_d0.0172
X-RAY DIFFRACTIONt_plane_restr0.0245

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