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- PDB-1bzw: PEANUT LECTIN COMPLEXED WITH C-LACTOSE -

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Entry
Database: PDB / ID: 1bzw
TitlePEANUT LECTIN COMPLEXED WITH C-LACTOSE
ComponentsPROTEIN (PEANUT LECTIN)
KeywordsSUGAR BINDING PROTEIN / LECTIN / LEGUME LECTIN / WATER BRIDGES / CARBOHYDRATE SPECIFICITY / C-LACTOSE / PROTEIN CRYSTALLOGRAPHY / AGGLUTININ
Function / homology
Function and homology information


carbohydrate binding / metal ion 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 domain / Legume lectin, beta chain, Mn/Ca-binding site / : / Jelly Rolls - #200 / Concanavalin A-like lectin/glucanase domain superfamily ...Legume lectin / Legume lectin, alpha chain, conserved site / Legume lectins alpha-chain signature. / Legume lectins beta-chain signature. / Legume lectin domain / Legume lectin domain / Legume lectin, beta chain, Mn/Ca-binding site / : / Jelly Rolls - #200 / Concanavalin A-like lectin/glucanase domain superfamily / Jelly Rolls / Sandwich / Mainly Beta
Similarity search - Domain/homology
beta-lactose / alpha-lactose / : / Galactose-binding lectin
Similarity search - Component
Biological speciesArachis hypogaea (peanut)
MethodX-RAY DIFFRACTION / OTHER / Resolution: 2.7 Å
AuthorsRavishankar, R. / Surolia, A. / Vijayan, M. / Lim, S. / Kishi, Y.
Citation
Journal: J.Am.Chem.Soc. / Year: 1998
Title: Preferred Conformation of C-Lactose at the Free and Peanut Lectin Bound States
Authors: Ravishankar, R. / Surolia, A. / Vijayan, M. / Lim, S. / Kishi, Y.
#1: Journal: Curr.Sci. / Year: 1997
Title: The Specificity of Peanut Agglutinin for Thomsen-Friedenreich Antigen is Mediated by Water-Bridges
Authors: Ravishankar, R. / Ravindran, M. / Suguna, K. / Surolia, A. / Vijayan, M.
#2: Journal: J.Mol.Biol. / Year: 1996
Title: Conformation, Protein-Carbohydrate Interactions and a Novel Subunit Association in the Refined Structure of Peanut Lectin-Lactose Complex
Authors: Banerjee, R. / Das, K. / Ravishankar, R. / Suguna, K. / Surolia, A. / Vijayan, M.
#3: Journal: J.Am.Chem.Soc. / Year: 1995
Title: Biological Evaluation of Rationally Modified Analog of the H-Type II Blood Group Trisaccharide. A Correlation between Solution Conformation and Binding Affinity
Authors: Wei, A. / Boy, K.M. / Kishi, Y.
#4: Journal: J.Org.Chem. / Year: 1995
Title: Preferred Conformation of C-Glycosides. 14. Synthes and Conformational Analysis of Carbon Analogs of Th Blood Group Determinant H-Type II
Authors: Wei, A. / Haudrechy, A. / Audin, C. / Jun, H.-S. / Haudrechy-Brete, N. / Kishi, Y.
#5: Journal: Proc.Natl.Acad.Sci.USA / Year: 1994
Title: Crystal Structure of Peanut Lectin, a Protein with an Unusual Quaternary Structure
Authors: Banerjee, R. / Mande, S.C. / Ganesh, V. / Das, K. / Dhanaraj, V. / Mahanta, S.K. / Suguna, K. / Surolia, A. / Vijayan, M.
History
DepositionNov 5, 1998Deposition site: BNL / Processing site: RCSB
Revision 1.0Nov 11, 1998Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 4, 2017Group: Refinement description / Category: software / Item: _software.name
Revision 2.0Jul 29, 2020Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / entity_name_com / 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_molecule_features / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_struct_conn_angle / 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_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_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_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.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
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Feb 7, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 2.2Apr 3, 2024Group: Refinement description / Category: pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: PROTEIN (PEANUT LECTIN)
B: PROTEIN (PEANUT LECTIN)
C: PROTEIN (PEANUT LECTIN)
D: PROTEIN (PEANUT LECTIN)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)100,57516
Polymers98,8264
Non-polymers1,74912
Water5,945330
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)129.121, 126.748, 76.900
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number18
Space group name H-MP21212
Noncrystallographic symmetry (NCS)NCS oper:
IDCodeMatrixVector
1given(-0.996954, -0.072618, -0.028465), (-0.077814, 0.951013, 0.299196), (0.005343, 0.3005, -0.953767)62.3857, -7.7703, 65.7472
2given(0.488143, 0.23612, 0.840216), (-0.355893, -0.825179, 0.438658), (0.796905, -0.513155, -0.318772)10.3769, 11.6619, 29.9279
3given(-0.456008, -0.14598, -0.877922), (-0.143388, -0.961517, 0.234359), (-0.878349, 0.232753, 0.417527)95.519, 1.14, 59.2078

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Components

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Protein , 1 types, 4 molecules ABCD

#1: Protein
PROTEIN (PEANUT LECTIN) / PEANUT AGGLUTININ-C-LACTOSE COMPLEX


Mass: 24706.385 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) Arachis hypogaea (peanut) / References: UniProt: P02872

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Sugars , 2 types, 4 molecules

#2: Polysaccharide beta-D-galactopyranose-(1-4)-alpha-D-glucopyranose / alpha-lactose


Type: oligosaccharide, Oligosaccharide / Class: Nutrient / Mass: 342.297 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: alpha-lactose
DescriptorTypeProgram
DGalpb1-4DGlcpa1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,2,1/[a2122h-1a_1-5][a2112h-1b_1-5]/1-2/a4-b1WURCSPDB2Glycan 1.1.0
[][a-D-Glcp]{[(4+1)][b-D-Galp]{}}LINUCSPDB-CARE
#3: Polysaccharide beta-D-galactopyranose-(1-4)-beta-D-glucopyranose / beta-lactose


Type: oligosaccharide, Oligosaccharide / Class: Nutrient / Mass: 342.297 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: beta-lactose
DescriptorTypeProgram
DGalpb1-4DGlcpb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,2,1/[a2122h-1b_1-5][a2112h-1b_1-5]/1-2/a4-b1WURCSPDB2Glycan 1.1.0
[][b-D-Glcp]{[(4+1)][b-D-Galp]{}}LINUCSPDB-CARE

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Non-polymers , 3 types, 338 molecules

#4: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Ca
#5: Chemical
ChemComp-MN / MANGANESE (II) ION


Mass: 54.938 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mn
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 330 / 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: 3.18 Å3/Da / Density % sol: 57 %
Crystal growMethod: vapor diffusion, hanging drop / pH: 7
Details: HANGING DROP OF 5 MG/ML PROTEIN IN 0.05 M SODIUM PHOSPHATE BUFFER,PH 7.0, CONTAINING 0.2M SODIUM CHLORIDE, 0.02 % SODIUM AZIDE, 10MM C-LACTOSE AND 12% (W/V) PEG 8000 IN THE SAME BUFFER, ...Details: HANGING DROP OF 5 MG/ML PROTEIN IN 0.05 M SODIUM PHOSPHATE BUFFER,PH 7.0, CONTAINING 0.2M SODIUM CHLORIDE, 0.02 % SODIUM AZIDE, 10MM C-LACTOSE AND 12% (W/V) PEG 8000 IN THE SAME BUFFER, vapor diffusion - hanging drop
Crystal
*PLUS
Crystal grow
*PLUS
Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
15 mg/mlprotein1drop
20.05 Msodium phosphate1drop
30.2 M1dropNaCl
40.02 %sodium azide1drop
510 mMC-lactose1drop
612 %(w/v)PEG80001drop
740 %(w/v)PEG80001reservoir
80.05 Msodium phosphate1reservoir
90.2 M1reservoirNaCl
100.02 %sodium azide1reservoir
1110 mMC-lactose1reservoir

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Data collection

DiffractionMean temperature: 293 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Details: MIRROR
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.7→19.7 Å / Num. obs: 33099 / % possible obs: 93.81 % / Redundancy: 3.75 % / Biso Wilson estimate: 30.8 Å2 / Rmerge(I) obs: 0.129 / Net I/σ(I): 14.2
Reflection shellResolution: 2.7→2.8 Å / Redundancy: 2.9 % / Rmerge(I) obs: 0.461 / Mean I/σ(I) obs: 2.33 / % possible all: 93.8
Reflection
*PLUS
Num. measured all: 124179

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Processing

Software
NameVersionClassification
X-PLOR3.1model building
X-PLOR3.1refinement
XDSdata reduction
XDSdata scaling
X-PLOR3.1phasing
RefinementMethod to determine structure: OTHER
Starting model: PDB2PEL WITHOUT SUGAR AND WATER

Resolution: 2.7→10 Å / Rfactor Rfree error: 0.007 / Data cutoff high absF: 10000000 / Data cutoff low absF: 0.001 / Isotropic thermal model: GROUP / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.227 1178 3.9 %RANDOM
Rwork0.188 ---
obs0.188 29962 86.6 %-
Displacement parametersBiso mean: 23.7 Å2
Baniso -1Baniso -2Baniso -3
1-0 Å20 Å20 Å2
2--0 Å20 Å2
3---0 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.33 Å0.26 Å
Luzzati d res low-10 Å
Luzzati sigma a0.33 Å0.28 Å
Refinement stepCycle: LAST / Resolution: 2.7→10 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6976 0 100 330 7406
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.008
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg1.6
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d27.3
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d1.16
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
Refine LS restraints NCSNCS model details: RESTRAIN
LS refinement shellResolution: 2.7→2.87 Å / Rfactor Rfree error: 0.023 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.264 133 3.4 %
Rwork0.27 3797 -
obs--69.2 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PARHCSDX.PROTOPHCSDX.PRO
X-RAY DIFFRACTION2WAT.PARWAT.TOP
X-RAY DIFFRACTION3PARAM1.CHOTOPH1.CHO
Software
*PLUS
Name: X-PLOR / Version: 3.1 / Classification: refinement
Refinement
*PLUS
σ(F): 0 / % reflection Rfree: 3.9 %
Solvent computation
*PLUS
Displacement parameters
*PLUS
Biso mean: 23.7 Å2
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.008
X-RAY DIFFRACTIONx_angle_deg1.6
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg27.3
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg1.16
LS refinement shell
*PLUS
Rfactor Rfree: 0.264 / % reflection Rfree: 3.4 % / Rfactor Rwork: 0.27

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