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- PDB-1ax2: ERYTHRINA CORALLODENDRON LECTIN IN COMPLEX WITH N-ACETYLLACTOSAMINE -

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Basic information

Entry
Database: PDB / ID: 1ax2
TitleERYTHRINA CORALLODENDRON LECTIN IN COMPLEX WITH N-ACETYLLACTOSAMINE
ComponentsLECTIN
KeywordsLECTIN / GLYCOPROTEIN
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
N-acetyl-alpha-lactosamine / : / Lectin
Similarity search - Component
Biological speciesErythrina corallodendron (coral tree)
MethodX-RAY DIFFRACTION / DIFFERENCE FOURIER FROM PREVIOUSLY DETERMINED, RELATED STRUCTURE / Resolution: 1.95 Å
AuthorsShaanan, B. / Elgavish, S.
CitationJournal: J.Mol.Biol. / Year: 1998
Title: Structures of the Erythrina corallodendron lectin and of its complexes with mono- and disaccharides.
Authors: Elgavish, S. / Shaanan, B.
History
DepositionOct 24, 1997Processing site: BNL
Revision 1.0May 6, 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: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Other / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / entity_name_com / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_database_status / 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 / pdbx_struct_special_symmetry / 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.occupancy / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _pdbx_database_status.process_site / _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_struct_special_symmetry.label_asym_id / _struct_conn.conn_type_id / _struct_conn.id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _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 2.1Aug 2, 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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: LECTIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)27,8895
Polymers26,2211
Non-polymers1,6674
Water2,774154
1
A: LECTIN
hetero molecules

A: LECTIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)55,77710
Polymers52,4422
Non-polymers3,3358
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_556-x,y,-z+11
Unit cell
Length a, b, c (Å)83.930, 73.170, 71.310
Angle α, β, γ (deg.)90.00, 113.36, 90.00
Int Tables number5
Space group name H-MC121
Components on special symmetry positions
IDModelComponents
11A-606-

HOH

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Components

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Protein , 1 types, 1 molecules A

#1: Protein LECTIN /


Mass: 26221.180 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Erythrina corallodendron (coral tree) / References: UniProt: P16404

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Sugars , 2 types, 2 molecules

#2: Polysaccharide beta-D-xylopyranose-(1-2)-[alpha-D-mannopyranose-(1-3)][alpha-D-mannopyranose-(1-6)]beta-D- ...beta-D-xylopyranose-(1-2)-[alpha-D-mannopyranose-(1-3)][alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-3)]2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 1189.079 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DXylpb1-2[DManpa1-3][DManpa1-6]DManpb1-4DGlcpNAcb1-4[LFucpa1-3]DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/5,7,6/[a2122h-1b_1-5_2*NCC/3=O][a1221m-1a_1-5][a1122h-1b_1-5][a212h-1b_1-5][a1122h-1a_1-5]/1-2-1-3-4-5-5/a3-b1_a4-c1_c4-d1_d2-e1_d3-f1_d6-g1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(3+1)][a-L-Fucp]{}[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(2+1)][b-D-Xylp]{}[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#3: Polysaccharide beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-alpha-D-glucopyranose / N-acetyl-alpha-lactosamine


Type: oligosaccharide, Oligosaccharide / Class: Glycan component / Mass: 383.349 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: N-acetyl-alpha-lactosamine
DescriptorTypeProgram
DGalpb1-4DGlcpNAca1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,2,1/[a2122h-1a_1-5_2*NCC/3=O][a2112h-1b_1-5]/1-2/a4-b1WURCSPDB2Glycan 1.1.0
[][a-D-GlcpNAc]{[(4+1)][b-D-Galp]{}}LINUCSPDB-CARE

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Non-polymers , 3 types, 156 molecules

#4: Chemical ChemComp-MN / MANGANESE (II) ION


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


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


Mass: 18.015 Da / Num. of mol.: 154 / 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: 3.83 Å3/Da / Density % sol: 67.89 %
Crystal growpH: 7 / Details: pH 7.
Crystal grow
*PLUS
pH: 7 / Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
16 mg/mlprotein1drop
215 %(v/v)MPD1drop
350 mMHEPES1drop
40.02 %(w/v)sodium azide1drop
530 %MPD1reservoir
6100 mMHEPES1reservoir
70.02 %sodium azide1reservoir

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Data collection

DiffractionMean temperature: 298 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RUH3R / Wavelength: 1.5418
DetectorType: RIGAKU RAXIS II / Detector: IMAGE PLATE / Date: Sep 1, 1993 / Details: FRANCKS MIRRORS (SUPPER 2 X 6 CM MIRRORS)
RadiationMonochromator: NI FILTER / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.95→20 Å / Num. obs: 27182 / % possible obs: 94 % / Redundancy: 2.4 % / Biso Wilson estimate: 25.1 Å2 / Rmerge(I) obs: 0.052 / Rsym value: 0.052 / Net I/σ(I): 13
Reflection shellResolution: 1.95→2.04 Å / Redundancy: 2.1 % / Rmerge(I) obs: 0.052 / Mean I/σ(I) obs: 3.5 / Rsym value: 0.267 / % possible all: 82
Reflection
*PLUS
Num. measured all: 65763
Reflection shell
*PLUS
Rmerge(I) obs: 0.267

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Processing

Software
NameVersionClassification
X-PLORmodel building
CNS0.1refinement
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing
RefinementMethod to determine structure: DIFFERENCE FOURIER FROM PREVIOUSLY DETERMINED, RELATED STRUCTURE
Starting model: COMPLEX WITH LACTOSE, PDB ENTRY 1LTE

1lte


Resolution: 1.95→6 Å / Rfactor Rfree error: 0.003 / Data cutoff high absF: 0 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.177 2604 9.9 %RANDOM
Rwork0.169 ---
obs0.169 26190 96 %-
Displacement parametersBiso mean: 27.5 Å2
Baniso -1Baniso -2Baniso -3
1--2.77 Å20 Å2-0.12 Å2
2--1.91 Å20 Å2
3---0.86 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.2 Å0.2 Å
Luzzati d res low-5 Å
Luzzati sigma a0.23 Å0.22 Å
Refinement stepCycle: LAST / Resolution: 1.95→6 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1855 0 108 154 2117
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.006
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.5
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d27.2
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d1.24
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.561.5
X-RAY DIFFRACTIONc_mcangle_it2.452
X-RAY DIFFRACTIONc_scbond_it3.342
X-RAY DIFFRACTIONc_scangle_it4.932.5
LS refinement shellResolution: 1.95→2.02 Å / Rfactor Rfree error: 0.026 / Total num. of bins used: 10
RfactorNum. reflection% reflection
Rfree0.349 185 11 %
Rwork0.346 1504 -
obs--60.6 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PARAM19X.PROTOPH19X.PRO
X-RAY DIFFRACTION2CARBOHYDRATE.PARAMCARBOHYDRATE.TOP
X-RAY DIFFRACTION3PARHCSDX.PROTOPHCSDX.PRO
Software
*PLUS
Name: CNS / Version: 0.1 / Classification: refinement
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg27.2
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg1.24

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