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Escherichia coli K-12 substr. MG1655 Compound Class: maltose

Synonyms: α-D-glucopyranose-(1→4)-D-glucopyranose, maltose

Superclasses: all carbohydrates a carbohydrate a glycan an oligosaccharide a disaccharide
all carbohydrates a carbohydrate a glycan an oligosaccharide a malto-oligosaccharide a linear malto-oligosaccharide

Summary:
Maltose is composed of two glucose molecules linked by an α 1,4-glycosidic linkage. Maltose is produced by the hydrolysis of starch and similar compounds, and can be hydrolyzed to glucose by the enzyme maltase.

Chemical Formula: C12H22O11

Citations: [Stryer88]

Molecular Weight: 342.3 Daltons

Monoisotopic Molecular Weight: 342.11621154930003 Daltons

SMILES: C(C1(OC(C(C(C1O)O)O)OC2(C(OC(C(C2O)O)O)CO)))O

InChI: InChI=1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5-,6+,7-,8-,9-,10-,11?,12-/m1/s1

Unification Links: CAS:69-79-4 , ChEBI:17306 , ChemSpider:6019

Standard Gibbs Free Energy of Change Formation (ΔfG in kcal/mol): -363.9 [Forsythe97]

Reactions known to consume the compound:

glycogen degradation I :
maltotetraose + D-glucopyranose ← maltotriose + maltose

Reactions known to produce the compound:

glycogen degradation I :
maltotriose + H2O → maltose + D-glucopyranose

Reactions known to both consume and produce the compound:

Not in pathways:
maltose + acetyl-CoA ↔ acetylmaltose + coenzyme A

In Reactions of unknown directionality:

Not in pathways:
maltohexaose + β-D-glucose = maltopentaose + maltose
maltopentaose + D-glucopyranose = maltotetraose + maltose
maltose + maltohexaose = maltoheptaose + β-D-glucose

In Transport reactions:
maltose[extracellular space]maltose[periplasmic space] ,
maltose[periplasmic space] + ATP + H2O → maltose[cytosol] + ADP + phosphate + H+ ,
maltose[periplasmic space]maltose[cytosol]

In Growth Media: PMA carbon source test + maltose


References

Forsythe97: Forsythe RG, Karp PD, Mavrovouniotis ML (1997). "Estimation of Equilibrium Constants Using Automated Group Contribution Methods." CABIOS 13(5):537-543.

Stryer88: Stryer L "Biochemistry." WH Freeman and Co., 3rd edition, New York, 1988.


Report Errors or Provide Feedback
Please cite the following article in publications resulting from the use of EcoCyc: Nucleic Acids Research 41:D605-12 2013
Page generated by SRI International Pathway Tools version 18.5 on Sat Nov 22, 2014, BIOCYC14A.