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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2022-09-22 18:34:12 UTC
HMDB IDHMDB0000048
Secondary Accession Numbers
  • HMDB00048
Metabolite Identification
Common NameMelibiose
DescriptionMelibiose (CAS: 585-99-9) is a disaccharide consisting of one galactose and one glucose moiety in an alpha (1-6) glycosidic linkage. This sugar is produced and metabolized only by enteric and lactic acid bacteria and other microbes, such as Dickeya dadantii, Escherichia, Leuconostoc, and Saccharomyces (PMID: 19734309 , 28453942 ). It is not an endogenous metabolite but may be obtained from the consumption of partially fermented molasses, brown sugar, or honey. Antibodies to melibiose will appear in individuals affected by Chagas' disease (Trypanosoma cruzi infection). Melibiose is not metabolized by humans but can be broken down by gut microflora, such as E. coli. In fact, E. coli is able to utilize melibiose as a sole source of carbon. Melibiose is first imported by the melibiose permease, MelB and then converted into β-D-glucose and β-D-galactose by the α-galactosidase encoded by melA. Because of its poor digestibility, melibiose (along with rhamnose) can be used together for noninvasive intestinal mucosa barrier testing. This test can be used to assess malabsorption or impairment of intestinal permeability. Recent studies with dietary melibiose have shown that it can strongly affect the Th cell responses to an ingested antigen. It has been suggested that melibiose could be used to enhance the induction of oral tolerance (PMID: 17986780 ).
Structure
Thumb
Synonyms
ValueSource
6-O-alpha-D-Galactopyranosyl-D-glucoseHMDB
6-O-alpha-D-Galactopyranosyl-alpha-D-glucopyranoseHMDB
6-O-Α-D-galactopyranosyl-D-glucoseHMDB
6-O-Α-D-galactopyranosyl-α-D-glucopyranoseHMDB
D-(+)-MelibioseHMDB
D-MelibioseHMDB
alpha-D-MelibioseHMDB
alpha-MelibioseHMDB
Α-D-melibioseHMDB
Α-melibioseHMDB
MelibioseHMDB
Chemical FormulaC12H22O11
Average Molecular Weight342.2965
Monoisotopic Molecular Weight342.116211546
IUPAC Name(2S,3R,4S,5S,6R)-6-({[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}methyl)oxane-2,3,4,5-tetrol
Traditional Name(2S,3R,4S,5S,6R)-6-({[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}methyl)oxane-2,3,4,5-tetrol
CAS Registry Number13299-20-2
SMILES
OC[C@H]1O[C@H](OC[C@H]2O[C@H](O)[C@H](O)[C@@H](O)[C@@H]2O)[C@H](O)[C@@H](O)[C@H]1O
InChI Identifier
InChI=1S/C12H22O11/c13-1-3-5(14)8(17)10(19)12(23-3)21-2-4-6(15)7(16)9(18)11(20)22-4/h3-20H,1-2H2/t3-,4-,5+,6-,7+,8+,9-,10-,11+,12+/m1/s1
InChI KeyDLRVVLDZNNYCBX-CQHUIXDMSA-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
  • Hemiacetal
  • Oxacycle
  • Organoheterocyclic compound
  • Polyol
  • Acetal
  • Hydrocarbon derivative
  • Primary alcohol
  • Alcohol
  • Aliphatic heteromonocyclic compound
Molecular FrameworkAliphatic heteromonocyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
Biological locationSource
Process
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point84 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility1000 mg/mLNot Available
LogPNot AvailableNot Available
Experimental Chromatographic Properties

Experimental Collision Cross Sections

Adduct TypeData SourceCCS Value (Å2)Reference
[M-H]-Baker172.63330932474
[M-H]-Not Available172.5http://allccs.zhulab.cn/database/detail?ID=AllCCS00000369
[M+H]+Not Available180.2http://allccs.zhulab.cn/database/detail?ID=AllCCS00000369
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular Locations
  • Extracellular
Biospecimen Locations
  • Blood
  • Urine
Tissue Locations
  • Spleen
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
UrineDetected and Quantified< 0.1 umol/mmol creatinineChildren (1-13 years old)Both
Normal
details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedCancer patients undergoing total body irradiation details
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothBladder cancer details
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkMelibiose
METLIN IDNot Available
PubChem Compound6602503
PDB IDNot Available
ChEBI IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferencePictet, Ame; Vogel, Hans. The synthesis of melibiose. Helvetica Chimica Acta (1927), 10 280.
Material Safety Data Sheet (MSDS)Not Available
General References

Enzymes

General function:
Involved in catalytic activity
Specific function:
Not Available
Gene Name:
GLA
Uniprot ID:
P06280
Molecular weight:
Not Available
Reactions
Melibiose + Water → beta-D-Galactose + D-Glucosedetails
D-Gal alpha 1->6D-Gal alpha 1->6D-Glucose + Water → beta-D-Galactose + Melibiosedetails
General function:
Involved in catalytic activity
Specific function:
May serve as an alternate pathway for starch digestion when luminal alpha-amylase activity is reduced because of immaturity or malnutrition. May play a unique role in the digestion of malted dietary oligosaccharides used in food manufacturing.
Gene Name:
MGAM
Uniprot ID:
O43451
Molecular weight:
Not Available
General function:
Involved in catalytic activity
Specific function:
Has alpha-glucosidase activity.
Gene Name:
GANC
Uniprot ID:
Q8TET4
Molecular weight:
Not Available