Monosaccharides
D-gliceraldehyde molecular structure
L-gliceraldehyde molecular structure.
Mirror images from each other.
D-glucose
carbon C1 and C5 approach
Pyranose ring.
α-D-glucopyranose.
β-D-fructofuranose.
D-glucosamine
Disaccharides
2 glucose molecules approach.
1 water molecule is losed
a glycosidic bond is formed.
Maltose shows a α-glycosidic bond
Cellobiose shows a β-glycosidic bond, like sucrose.
Polysaccharides
- Maltose (2 residues of glucose)
- We add a 3th, 4th, 5th and 6th residues.
- Activate rotation to observe helical structure
- Zoom out and adition of more glucose residues to reach a 30 residues molecule
- Look from a polar view.
- A fragment of amylopectin including 5 glucose residues.
- Zoom in to show a Branch point
- 4 residues at branch point.
- By adding to initial structure 25 glucose residues we get a 30 residues amylopectin fragment.
- Zoom out to show that branch points are spaced by 24 y 30 glucose residues.
- Glycogen.- Structure like amylopectin but with branch points spaced by 8-12 glucsoe residues.
- Cellobiose (2 glucose residues)
- Zoom out
- We add a 3th, a 4th, a 5th and a 6th glucose residue to show the helical structure of cellulose molecule (more extended that the amylose one).
- Zoom out and adition of new residues to complete a 30 residuos cellulose fragment.
- Look from a polar view
- A 3 residues chitin fragment.
