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- PDB-1dq1: Calcium;Calcium concanavalin A -

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Basic information

Entry
Database: PDB / ID: 1dq1
TitleCalcium;Calcium concanavalin A
ComponentsConcanavalin-Br
KeywordsSUGAR BINDING PROTEIN / beta-sheet / Leguminosae lectin / calcium / transition metal / ion binding site / S1 / calcium binding site / S2
Function / homology
Function and homology information


D-mannose binding / toxin activity / metal ion binding
Similarity search - Function
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 speciesCanavalia ensiformis (jack bean)
MethodX-RAY DIFFRACTION / Resolution: 2.15 Å
AuthorsBouckaert, J. / Dewallef, Y. / Poortmans, F. / Wyns, L. / Loris, R.
CitationJournal: J.Biol.Chem. / Year: 2000
Title: The structural features of concanavalin A governing non-proline peptide isomerization
Authors: Bouckaert, J. / Dewallef, Y. / Poortmans, F. / Wyns, L. / Loris, R.
History
DepositionDec 29, 1999Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 19, 2000Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Jun 21, 2017Group: Database references / Source and taxonomy / Structure summary
Category: entity / entity_name_com ...entity / entity_name_com / entity_src_nat / struct_ref / struct_ref_seq / struct_ref_seq_dif
Item: _entity.pdbx_description / _entity_src_nat.pdbx_beg_seq_num ..._entity.pdbx_description / _entity_src_nat.pdbx_beg_seq_num / _entity_src_nat.pdbx_end_seq_num / _struct_ref.db_code / _struct_ref.pdbx_align_begin / _struct_ref.pdbx_db_accession / _struct_ref.pdbx_seq_one_letter_code
Revision 1.4Feb 7, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / 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_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.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.pdbx_dist_value / _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_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_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-Br
hetero molecules


Theoretical massNumber of molelcules
Total (without water)25,7033
Polymers25,6221
Non-polymers802
Water1,54986
1
A: Concanavalin-Br
hetero molecules

A: Concanavalin-Br
hetero molecules

A: Concanavalin-Br
hetero molecules

A: Concanavalin-Br
hetero molecules


Theoretical massNumber of molelcules
Total (without water)102,81012
Polymers102,4904
Non-polymers3218
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_545-x,-y-1,z1
crystal symmetry operation3_556-x,y,-z+11
crystal symmetry operation4_546x,-y-1,-z+11
Unit cell
Length a, b, c (Å)62.964, 87.312, 88.936
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number23
Space group name H-MI222
Components on special symmetry positions
IDModelComponents
11A-369-

HOH

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Components

#1: Protein Concanavalin-Br / Con Br / CALCIUM / CALCIUM CONCANAVALIN A


Mass: 25622.385 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Canavalia ensiformis (jack bean) / References: UniProt: P55915
#2: Chemical ChemComp-CA / CALCIUM ION


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


Mass: 18.015 Da / Num. of mol.: 86 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.39 Å3/Da / Density % sol: 48.43 %
Crystal growTemperature: 293 K / pH: 7
Details: 2.1 M ammonium sulphate, 120 mM sodium acetate, 100 mM calcium, prepared by soaking of locked, metal-free concanavalin A crystals (1DQ0) with calcium, pH 7.0, temperature 293.0K

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Data collection

DiffractionMean temperature: 291 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RUH2R / Wavelength: 1.5418
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Apr 20, 1999
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.15→25 Å / Num. all: 13518 / Num. obs: 13518 / % possible obs: 99.4 % / Observed criterion σ(F): 0 / Observed criterion σ(I): -3 / Redundancy: 6 % / Biso Wilson estimate: 25.4 Å2 / Rmerge(I) obs: 0.104 / Net I/σ(I): 14.58
Reflection shellResolution: 2.15→2.25 Å / Redundancy: 6 % / Rmerge(I) obs: 0.375 / Mean I/σ(I) obs: 5.2 / Num. unique all: 1340 / % possible all: 99.9

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLOR3.851refinement
X-PLORphasing
RefinementResolution: 2.15→25 Å / Cross valid method: BRUNGER / σ(F): 0 / σ(I): -3 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.276 1352 10 %RANDOM
Rwork0.182 ---
all0.182 13517 --
obs0.182 13517 99.4 %-
Displacement parametersBiso mean: 25.03 Å2
Refinement stepCycle: LAST / Resolution: 2.15→25 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1809 0 2 86 1897
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.013
X-RAY DIFFRACTIONx_angle_deg1.8
X-RAY DIFFRACTIONx_dihedral_angle_d27
X-RAY DIFFRACTIONx_improper_angle_d1.9
LS refinement shellResolution: 2.15→2.25 Å / Total num. of bins used: 10 /
Rfactor% reflection
Rfree0.323 10 %
Rwork0.227 -
obs-99.9 %

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