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- PDB-2nn8: Crystal structure of human galectin-3 carbohydrate-recognition do... -

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Basic information

Entry
Database: PDB / ID: 2nn8
TitleCrystal structure of human galectin-3 carbohydrate-recognition domain with lactose bound, at 1.35 angstrom resolution
ComponentsGalectin-3
KeywordsSUGAR BINDING PROTEIN / beta-sandwich
Function / homology
Function and homology information


: / negative regulation of immunological synapse formation / disaccharide binding / negative regulation of T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell / RUNX2 regulates genes involved in differentiation of myeloid cells / regulation of T cell apoptotic process / mononuclear cell migration / positive regulation of mononuclear cell migration / negative regulation of endocytosis / IgE binding ...: / negative regulation of immunological synapse formation / disaccharide binding / negative regulation of T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell / RUNX2 regulates genes involved in differentiation of myeloid cells / regulation of T cell apoptotic process / mononuclear cell migration / positive regulation of mononuclear cell migration / negative regulation of endocytosis / IgE binding / eosinophil chemotaxis / regulation of extrinsic apoptotic signaling pathway via death domain receptors / RUNX1 regulates transcription of genes involved in differentiation of myeloid cells / protein phosphatase inhibitor activity / negative regulation of T cell receptor signaling pathway / positive chemotaxis / regulation of T cell proliferation / macrophage chemotaxis / positive regulation of calcium ion import / chemoattractant activity / monocyte chemotaxis / Advanced glycosylation endproduct receptor signaling / ficolin-1-rich granule membrane / immunological synapse / laminin binding / epithelial cell differentiation / neutrophil chemotaxis / RNA splicing / secretory granule membrane / negative regulation of extrinsic apoptotic signaling pathway / positive regulation of protein localization to plasma membrane / spliceosomal complex / molecular condensate scaffold activity / positive regulation of protein-containing complex assembly / mRNA processing / carbohydrate binding / protein phosphatase binding / collagen-containing extracellular matrix / mitochondrial inner membrane / innate immune response / Neutrophil degranulation / cell surface / RNA binding / extracellular space / extracellular exosome / extracellular region / nucleoplasm / membrane / nucleus / plasma membrane / cytosol / cytoplasm
Similarity search - Function
Galectin-like / Galactoside-binding lectin / Galectin / Galectin, carbohydrate recognition domain / Galactoside-binding lectin / Galactoside-binding lectin (galectin) domain profile. / Jelly Rolls - #200 / Concanavalin A-like lectin/glucanase domain superfamily / Jelly Rolls / Sandwich / Mainly Beta
Similarity search - Domain/homology
beta-lactose / alpha-lactose / Galectin-3
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 1.35 Å
AuthorsBlanchard, H. / Collins, P.M.
CitationJournal: Acta Crystallogr.,Sect.D / Year: 2007
Title: Slow diffusion of lactose out of galectin-3 crystals monitored by X-ray crystallography: possible implications for ligand-exchange protocols.
Authors: Collins, P.M. / Hidari, K.I. / Blanchard, H.
History
DepositionOct 24, 2006Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Mar 6, 2007Provider: repository / Type: Initial release
Revision 1.1May 1, 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 / Non-polymer description / 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 / 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.formula / _chem_comp.formula_weight / _chem_comp.id / _chem_comp.mon_nstd_flag / _chem_comp.name / _chem_comp.pdbx_synonyms / _chem_comp.type / _entity.formula_weight / _entity.pdbx_description / _entity.type
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Oct 25, 2023Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / 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: Galectin-3
hetero molecules


Theoretical massNumber of molelcules
Total (without water)16,5135
Polymers15,7011
Non-polymers8124
Water3,549197
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)36.371, 57.800, 62.603
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121
DetailsTHE BIOLOGICAL MOLECULE(S) IS EXPECTED TO BE FULL-LENGTH GALECTIN-3 WHICH CONSISTS OF N-TERMINAL DOMAIN AND THE CRD DOMAIN. SEE REMARK 350 FOR INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S) OF CRD DOMAIN. THE BIOLOGICAL UNIT IS A MONOMER OF GALECTIN-3 CARBOHYDRATE -RECOGNITION DOMAIN. THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT CONTAINS ONE MOLECULE OF THE GALECTIN-3 CARBOHYDRATE-RECOGNITION DOMAIN.

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Components

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Protein , 1 types, 1 molecules A

#1: Protein Galectin-3 / Galactose-specific lectin 3 / Mac-2 antigen / IgE-binding protein / 35 kDa lectin / Carbohydrate- ...Galactose-specific lectin 3 / Mac-2 antigen / IgE-binding protein / 35 kDa lectin / Carbohydrate-binding protein 35 / CBP 35 / Laminin-binding protein / Lectin L-29 / L-31 / Galactoside-binding protein / GALBP


Mass: 15701.049 Da / Num. of mol.: 1 / Fragment: Galectin-3 CRD domain, Residues 113-250
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Plasmid: pET-3a / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21 DE3 / References: UniProt: P17931

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Sugars , 2 types, 2 molecules

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

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Non-polymers , 3 types, 199 molecules

#4: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H8O3
#5: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 197 / Source method: isolated from a natural source / Formula: H2O

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Details

Nonpolymer detailsLACTOSE IS MIXTURE OF BOTH ALPHA- AND BETA- FORMS WITH 0.5 OCCUPANCY. THEY ARE LABELED AS LBT FOR ...LACTOSE IS MIXTURE OF BOTH ALPHA- AND BETA- FORMS WITH 0.5 OCCUPANCY. THEY ARE LABELED AS LBT FOR ALPHA AND LAT FOR BETA, RESPECTIVELY.

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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: 2.09 Å3/Da / Density % sol: 41.26 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 7
Details: 31% PEG 6000, 100mM MgCL2, 8mM beta mercaptoethanol, 100mM Tris-HCL, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ALS / Beamline: 8.3.1 / Wavelength: 1.1159 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Nov 15, 2005
RadiationMonochromator: SI 111 / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.1159 Å / Relative weight: 1
ReflectionResolution: 1.35→42.49 Å / Num. all: 29182 / Num. obs: 29182 / % possible obs: 98.3 % / Redundancy: 3.7 % / Rmerge(I) obs: 0.036 / Net I/σ(I): 11.5
Reflection shellResolution: 1.35→1.42 Å / Rmerge(I) obs: 0.21 / Mean I/σ(I) obs: 3.4 / % possible all: 89.9

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Processing

Software
NameVersionClassification
REFMAC5.2.0019refinement
MOSFLMdata reduction
CCP4(SCALA)data scaling
AMoREphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB ENTRY 1A3K

1a3k


Resolution: 1.35→27.62 Å / Cor.coef. Fo:Fc: 0.968 / Cor.coef. Fo:Fc free: 0.967 / SU B: 0.766 / SU ML: 0.033 / Cross valid method: THROUGHOUT / ESU R: 0.058 / ESU R Free: 0.055 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.1749 1482 5.1 %RANDOM
Rwork0.16418 ---
obs0.16476 27660 98.13 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso mean: 13.881 Å2
Baniso -1Baniso -2Baniso -3
1-0.31 Å20 Å20 Å2
2---0.28 Å20 Å2
3----0.03 Å2
Refinement stepCycle: LAST / Resolution: 1.35→27.62 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1108 0 53 197 1358
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0070.0221270
X-RAY DIFFRACTIONr_angle_refined_deg1.2871.9751747
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.5545168
X-RAY DIFFRACTIONr_dihedral_angle_2_deg35.12223.69265
X-RAY DIFFRACTIONr_dihedral_angle_3_deg11.75315226
X-RAY DIFFRACTIONr_dihedral_angle_4_deg12.9951512
X-RAY DIFFRACTIONr_chiral_restr0.0890.2198
X-RAY DIFFRACTIONr_gen_planes_refined0.0050.02976
X-RAY DIFFRACTIONr_nbd_refined0.1930.2467
X-RAY DIFFRACTIONr_nbtor_refined0.310.2850
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.0930.2137
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.1470.248
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1090.229
X-RAY DIFFRACTIONr_mcbond_it1.4372763
X-RAY DIFFRACTIONr_mcangle_it1.98931227
X-RAY DIFFRACTIONr_scbond_it2.7574556
X-RAY DIFFRACTIONr_scangle_it4.1186504
LS refinement shellResolution: 1.35→1.385 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.326 86 -
Rwork0.249 1725 -
obs--84.15 %

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