Trisaccharide

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Trisaccharides are oligosaccharides composed of three monosaccharides with two glycosidic bonds connecting them. Similar to the disaccharides, each glycosidic bond can be formed between any hydroxyl group on the component monosaccharides. Even if all three component sugars are the same (e.g., glucose), different bond combinations (regiochemistry) and stereochemistry (alpha- or beta-) result in trisaccharides that are diastereoisomers with different chemical and physical properties. [1] [2]

Contents

Examples

TrisaccharideUnit 1BondUnit 2BondUnit 3
Nigerotriose glucose α(1→3)glucoseα(1→3)glucose
Maltotriose glucoseα(1→4)glucoseα(1→4)glucose
Melezitose glucoseα(1→2) fructose α(1→3)glucose
Maltotriulose glucoseα(1→4)glucoseα(1→4)fructose
Raffinose galactose α(1→6)glucoseβ(1→2)fructose
Kestose glucoseα(1↔2)fructoseβ(1←2)fructose

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References

  1. Nelson, David L. (2021). Lehninger principles of biochemistry. Michael M. Cox, Aaron A. Hoskins (8th ed.). New York, NY. ISBN   978-1-319-22800-2. OCLC   1243000176.{{cite book}}: CS1 maint: location missing publisher (link)
  2. Berg, Jeremy M. (2019). Biochemistry. John L. Tymoczko, Gregory J., Jr. Gatto, Lubert Stryer (9th ed.). New York. ISBN   978-1-319-11467-1. OCLC   1037810557.{{cite book}}: CS1 maint: location missing publisher (link)