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- PDB-3enr: ZINC-CALCIUM CONCANAVALIN A AT PH 6.15 -

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Basic information

Entry
Database: PDB / ID: 3enr
TitleZINC-CALCIUM CONCANAVALIN A AT PH 6.15
ComponentsConcanavalin-A
KeywordsCONCANAVALIN A / LECTIN / METAL BINDING / PH
Function / homology
Function and homology information


regulation of defense response to virus / D-mannose binding / defense response / 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
Biological speciesCanavalia ensiformis (jack bean)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.4 Å
AuthorsBouckaert, J. / Loris, R. / Wyns, L.
CitationJournal: Acta Crystallogr.,Sect.D / Year: 2000
Title: Zinc/calcium- and cadmium/cadmium-substituted concanavalin A: interplay of metal binding, pH and molecular packing.
Authors: Bouckaert, J. / Loris, R. / Wyns, L.
History
DepositionFeb 11, 1999Deposition site: PDBE / Processing site: RCSB
Revision 1.0Sep 18, 2000Provider: repository / Type: Initial release
Revision 1.1Oct 16, 2007Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Jun 7, 2017Group: Database references / Source and taxonomy / Structure summary
Revision 1.4Sep 6, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / 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.ptnr1_symmetry / _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.ptnr3_symmetry / _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.ptnr1_symmetry / _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.ptnr2_symmetry / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Concanavalin-A
B: Concanavalin-A
hetero molecules


Theoretical massNumber of molelcules
Total (without water)51,5878
Polymers51,2452
Non-polymers3426
Water1,29772
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)60.130, 96.460, 87.420
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number18
Cell settingorthorhombic
Space group name H-MP21212
Noncrystallographic symmetry (NCS)NCS oper: (Code: given
Matrix: (0.973159, 0.23012, -0.002408), (0.230105, -0.973151, -0.005442), (-0.003595, 0.004741, -0.999982)
Vector: 0.1406, -0.053, 43.6129)
DetailsTHE ASSYMMETRIC UNIT CONTAINS A DIMER. THE BIOLOGICALLY ACTIVE UNIT IS A CANONICAL DIMER OR A TETRAMER (ABOVE PH 6.5). THE FOLLOWING SURFACE LOOPS ARE IN WEAK ELECTRON DENSITY: 118-123 AND 160-163. A ZN2+ IS SUBSTITUTED FOR MN2+ IN THE TRANSITION METAL ION SITE S1. THE CALCIUM SITE S2 CONTAINS CA2+.

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Components

#1: Protein Concanavalin-A / Con A


Mass: 25622.385 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Details: ZINC/CALCIUM COMPLEX / Source: (natural) Canavalia ensiformis (jack bean) / Organ: BEAN / References: UniProt: P02866
#2: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Zn
#3: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ca
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 72 / 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: 2.48 Å3/Da / Density % sol: 41.3 %
Crystal growMethod: vapor diffusion, sitting drop / pH: 6.15
Details: ZNCL2, CACL2, (NH4)2SO4, sodium acetate, pH 6.15, VAPOR DIFFUSION, SITTING DROP
Components of the solutions
IDNameCrystal-IDSol-ID
1ZNCL211
2CACL211
3(NH4)2SO411
4sodium acetate11
5(NH4)2SO412
6sodium acetate12
Crystal grow
*PLUS
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
16 mg/mlprotein1drop
210 mM1dropZnCl2
310 mM1dropCaCl2
41.8 Mammonium sulfate1reservoir
5100 mM1reservoirCH3COONa
61

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Data collection

DiffractionMean temperature: 291 K
Diffraction sourceWavelength: 1.5418
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Jun 6, 1996 / Details: COLLIMATOR
RadiationMonochromator: GRAPHITE / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.4→15 Å / Num. all: 20384 / Num. obs: 20384 / % possible obs: 99.4 % / Observed criterion σ(I): 0 / Redundancy: 5.8 % / Biso Wilson estimate: 49.4 Å2 / Rsym value: 0.103 / Net I/σ(I): 16.38
Reflection shellResolution: 2.4→2.48 Å / Redundancy: 6 % / Mean I/σ(I) obs: 7.34 / Rsym value: 0.29 / % possible all: 99.1
Reflection
*PLUS
Num. measured all: 132328 / Rmerge(I) obs: 0.103
Reflection shell
*PLUS
% possible obs: 99.1 % / Rmerge(I) obs: 0.29

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Processing

Software
NameVersionClassification
AMoREphasing
X-PLOR3.851refinement
MOSFLMdata reduction
CCP4(AGROVATAdata scaling
ROTAVATAdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: DIMER OF PDB ENTRY 5CNA

5cna


Resolution: 2.4→15 Å / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.283 1979 10 %RANDOM
Rwork0.215 ---
all-20359 --
obs-20359 99.4 %-
Displacement parametersBiso mean: 45.6 Å2
Baniso -1Baniso -2Baniso -3
1-5.269 Å20 Å20 Å2
2--4.598 Å20 Å2
3---3.813 Å2
Refinement stepCycle: LAST / Resolution: 2.4→15 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3615 0 6 72 3693
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.014
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_deg1.81
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d27.74
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d1.51
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: RESTRAINTS
LS refinement shellResolution: 2.4→2.51 Å / Total num. of bins used: 8
RfactorNum. reflection% reflection
Rfree0.455 233 10.6 %
Rwork0.386 2198 -
obs--97.2 %
Xplor fileSerial no: 1 / Param file: PARHCSDX.PRO / Topol file: TOPHCSDX.PRO
Software
*PLUS
Name: X-PLOR / Version: 3.851 / Classification: refinement
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg27.74
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg1.51

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