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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2006-08-13 13:21:05 UTC
Update Date2022-03-07 02:49:20 UTC
HMDB IDHMDB0004162
Secondary Accession Numbers
  • HMDB04162
Metabolite Identification
Common NameGalactan
DescriptionGalactan is a beta-glucan consisting of polymerized galactose. Beta -glucans are glucose polymers found in the cell walls of plants, fungi, and bacteria and as conserved structures can be considered to be classical pathogen-associated molecular patterns. These polymers belong to a class of drugs known as biological response modifiers and have a variety of effects on the immune system, including antitumor and anti-infective activities, protecting against fungal, bacterial, viral, and protozoal infections. Both particulate and soluble beta -glucans mediate these activities by activating leukocytes and stimulating their phagocytic activity and the production of reactive oxygen intermediates, inflammatory mediators, and cytokines. Despite the wealth of knowledge regarding the effects of beta-glucans and their obvious therapeutic potential, the molecular mechanisms that underlie these responses are not well understood. A number of receptors are thought to play a role in mediating these responses, including murine Dectin-1, which we recently identified as a beta-glucan receptor. Dectin-1 is a C-type lectin receptor that mediates the production of reactive oxygen species and inflammatory cytokines. Galactan is found in hemicellulose and can be converted to galactose by hydrolysis. (PMID: 11567029 , 11567029 , 16880608 ). Galactan can be produced by bacteria, such as Bifidobacteria, Lactococcus and Methylobacterium (http://www.scielo.br/pdf/babt/v54n6/02.pdf).
Structure
Data?1582752301
SynonymsNot Available
Chemical Formula(C12H20O11)nC2H6
Average Molecular WeightNot Available
Monoisotopic Molecular WeightNot Available
IUPAC NameNot Available
Traditional NameNot Available
CAS Registry Number39300-87-3
SMILES
CO[C@@H]1O[C@H](CO)[C@H](O[C@@H]2O[C@H](CO)[C@H](OC)[C@H](O)[C@H]2O)[C@H](O)[C@H]1O
InChI Identifier
InChI=1S/C14H26O11/c1-21-11-5(3-15)24-14(10(20)7(11)17)25-12-6(4-16)23-13(22-2)9(19)8(12)18/h5-20H,3-4H2,1-2H3/t5-,6-,7-,8-,9-,10-,11+,12+,13-,14+/m1/s1
InChI KeyPTHCMJGKKRQCBF-ICIGWGHZSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as o-glycosyl compounds. These are glycoside in which a sugar group is bonded through one carbon to another group via a O-glycosidic bond.
KingdomOrganic compounds
Super ClassOrganic oxygen compounds
ClassOrganooxygen compounds
Sub ClassCarbohydrates and carbohydrate conjugates
Direct ParentO-glycosyl compounds
Alternative Parents
Substituents
  • O-glycosyl compound
  • Disaccharide
  • Oxane
  • Secondary alcohol
  • Oxacycle
  • Organoheterocyclic compound
  • Ether
  • Dialkyl ether
  • Acetal
  • Hydrocarbon derivative
  • Primary alcohol
  • Alcohol
  • Aliphatic heteromonocyclic compound
Molecular FrameworkAliphatic heteromonocyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
Process
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
logP-2.4ALOGPS
logS-0.04ALOGPS
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+179.33230932474
DeepCCS[M-H]-177.30930932474
DeepCCS[M-2H]-210.76430932474
DeepCCS[M+Na]+185.20530932474

Predicted Kovats Retention Indices

Not Available
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Galactan GC-MS (Non-derivatized) - 70eV, Positivesplash10-0k9i-3329000000-2b7bd69033e8a4fea64a2017-11-06Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental LC-MS/MSLC-MS/MS Spectrum - Galactan Quattro_QQQ 10V, Positive-QTOF (Annotated)splash10-00di-0009000000-622a9ee87e03229ca3a12012-07-25HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Galactan Quattro_QQQ 25V, Positive-QTOF (Annotated)splash10-00kf-2595000000-b946c2ed9bf4a89bde212012-07-25HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Galactan Quattro_QQQ 40V, Positive-QTOF (Annotated)splash10-0ik9-2900000000-e1be501a9ca553503d2d2012-07-25HMDB team, MONAView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 10V, Positive-QTOFsplash10-0fi1-0907000000-f53409baaccf2c2834522019-02-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 20V, Positive-QTOFsplash10-004j-0901000000-c35685818fdd351d012f2019-02-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 40V, Positive-QTOFsplash10-004j-3900000000-5d3982d1bb24102880b82019-02-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 10V, Negative-QTOFsplash10-014l-0619000000-ee637f461d7c96fadf3e2019-02-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 20V, Negative-QTOFsplash10-002f-2902000000-5683d5f6382d37900c3c2019-02-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 40V, Negative-QTOFsplash10-01ox-6900000000-db49a499d8280d28c64f2019-02-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 10V, Positive-QTOFsplash10-00di-0609000000-0dcb8fef7c013777f12e2021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 20V, Positive-QTOFsplash10-004j-1900000000-3ea35321e04f2cba1d3a2021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 40V, Positive-QTOFsplash10-0bvj-9710000000-bb5f9bcfdec86cf6b78a2021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 10V, Negative-QTOFsplash10-014i-0209000000-59d4bec3247cdead56722021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 20V, Negative-QTOFsplash10-016r-4948000000-7a4b110014b05330fed42021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Galactan 40V, Negative-QTOFsplash10-0596-9310000000-b79abc5ca8f54ee5ef9c2021-09-24Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted 1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB005116
KNApSAcK IDNot Available
Chemspider ID57487263
KEGG Compound IDC05796
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkGalactan
METLIN ID7023
PubChem Compound53477780
PDB IDNot Available
ChEBI IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Vierbuchen M, Bohmer G, Uhlenbruck G, Fischer R: Immuno- and histochemical studies on galactan and human blood group-related receptors in the bovine lung. Immunobiology. 1986 Aug;172(1-2):11-20. [PubMed:3095224 ]
  2. Uhlenbruck G, Karduck D, Haupt H, Schwick HG: C-reactive protein (CRP), 9.5 salpha1-glycoprotein and C1q: serum proteins with lectin properties? Z Immunitatsforsch Immunobiol. 1979 Feb;155(3):262-6. [PubMed:425611 ]
  3. Willment JA, Gordon S, Brown GD: Characterization of the human beta -glucan receptor and its alternatively spliced isoforms. J Biol Chem. 2001 Nov 23;276(47):43818-23. Epub 2001 Sep 20. [PubMed:11567029 ]
  4. Kato Y, Adachi Y, Ohno N: Contribution of N-linked oligosaccharides to the expression and functions of beta-glucan receptor, Dectin-1. Biol Pharm Bull. 2006 Aug;29(8):1580-6. [PubMed:16880608 ]

Enzymes

General function:
Involved in hydrolase activity, hydrolyzing O-glycosyl compounds
Specific function:
LPH splits lactose in the small intestine.
Gene Name:
LCT
Uniprot ID:
P09848
Molecular weight:
218584.77
General function:
Involved in hydrolase activity, hydrolyzing O-glycosyl compounds
Specific function:
Cleaves beta-linked terminal galactosyl residues from gangliosides, glycoproteins, and glycosaminoglycans. Isoform 2 has no beta-galactosidase catalytic activity, but plays functional roles in the formation of extracellular elastic fibers (elastogenesis) and in the development of connective tissue. Seems to be identical to the elastin-binding protein (EBP), a major component of the non-integrin cell surface receptor expressed on fibroblasts, smooth muscle cells, chondroblasts, leukocytes, and certain cancer cell types. In elastin producing cells, associates with tropoelastin intracellularly and functions as a recycling molecular chaperone which facilitates the secretions of tropoelastin and its assembly into elastic fibers.
Gene Name:
GLB1
Uniprot ID:
P16278
Molecular weight:
Not Available