--- title: "Disaccharides: glycosidic links compared Template | MolDraw" url: https://www.moldraw.com/templates/disaccharide-glycosidic-links/ description: "Disaccharides: glycosidic links compared template: Maltose (Glc α1→4 Glc), lactose (Gal β1→4 Glc) and sucrose (Glc α1↔β2 Fru) with the glycosidic oxygen…" lang: en publisher: Scidart Academy generated: 2026-11-13 --- [MolDraw](https://www.moldraw.com/) › [Templates](https://www.moldraw.com/templates/) › [Biochemistry](https://www.moldraw.com/templates/biochemistry/) › Disaccharides: glycosidic links compared [Biochemistry](https://www.moldraw.com/templates/biochemistry/)Premium # Disaccharides: glycosidic links compared template ![Disaccharides: glycosidic links compared template: Maltose (Glc α1→4 Glc), lactose (Gal β1→4 Glc) and sucrose (Glc α1↔β2 Fru) with the glycosidic oxygen picked out, and the digestive enzyme that hydrolyses each one.](https://www.moldraw.com/templates/disaccharide-glycosidic-links.webp) [Edit in MolDraw](https://www.moldraw.com/)Download with Pro Premium template. Preview and edit it free in MolDraw; downloading and exporting it is part of [MolDraw Pro](https://www.moldraw.com/pricing). Maltose (Glc α1→4 Glc), lactose (Gal β1→4 Glc) and sucrose (Glc α1↔β2 Fru) with the glycosidic oxygen picked out, and the digestive enzyme that hydrolyses each one. ## What the template shows - Maltose α(1→4), lactose β(1→4) and sucrose α1↔β2: which anomeric carbons are tied up decides whether the sugar is reducing - Maltose: Glc-α(1→4)-Glc (reducing) - One glucose is joined through its α-C1 to O4 of the other, which keeps a free hemiacetal (either anomer, drawn unassigned). - Lactose: Gal-β(1→4)-Glc (reducing) - Galactose (the C4 epimer of glucose) is joined through its β-C1 to O4 of glucose; the glucose half keeps a free hemiacetal. - Sucrose: Glc-α1↔β2-Fru (non-reducing) - The link joins both anomeric carbons (C1 of glucose, C2 of fructose), so neither ring can open. - A glycosidic bond is an acetal: stable in base, hydrolysed by acid or by the specific glycosidase. α and β links need different enzymes. - Maltose and lactose have one free anomeric carbon (reducing, mutarotate); sucrose has none (non-reducing). Starch and glycogen are α(1→4) chains like maltose; cellulose is β(1→4). - Lactose intolerance: adults who lose intestinal lactase cannot hydrolyse the β(1→4) link. Sucrose hydrolysis inverts the sign of rotation (invert sugar). Drawn with 144 atoms, 3 arrows, 3 shapes – every one editable in MolDraw. ## Sources - [Nelson & Cox, Lehninger Principles of Biochemistry, 8th ed., 2021, ch. 7](https://openlibrary.org/isbn/9781319228002) Textbook - [Berg, Tymoczko, Gatto & Stryer, Biochemistry, 9th ed., 2019](https://openlibrary.org/isbn/9781319114657) Textbook - [Voet & Voet, Biochemistry, 4th ed., Wiley 2011](https://openlibrary.org/isbn/9780470570951) Textbook ## How to use this template 1. Press **Edit in MolDraw**. The template opens on the canvas of the free MolDraw editor. 2. Change anything: move structures, edit atoms and labels, recolour highlights or delete what you do not need. 3. Add your own structures, arrows and text next to it, or combine several templates on one page. 4. Export the drawing as PNG, SVG or PDF for slides, worksheets, theses and papers. ## Frequently asked questions ### Is the Disaccharides: glycosidic links compared template free? You can preview the Disaccharides: glycosidic links compared template here and open and edit it in MolDraw for free. Downloading or exporting it is part of MolDraw Pro, together with the other premium templates. ### Can I edit the Disaccharides: glycosidic links compared template? Yes. It opens as an ordinary MolDraw drawing, so every structure, arrow, label and colour can be changed, and you can add your own content around it. ### Is the chemistry checked? Every structure is checked with RDKit and every curly arrow passes MolDraw’s electron-flow audit. The sources used are listed on this page. ### Are the biochemical pathways drawn with structures? Yes. 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