Image:Lacallo.png

[edit] Summary

Structures of Lactose and Allolactose

Unfortunately the allolactose molecule is lacking a hydroxy group on the right 6-membered ring on the very left C-atom (C4 according to the numbering). This creates the impression that this might be the difference between lactose and allolactose. In fact it is the different way these rings are connected with each other: The lactose molecule contains a beta-1-4 glycosidic bond whereas allolactose is connected via a beta-1-6 glycosidic bond. Hydroxy substituents are still in the same plane of the ring (equatorial or axial position) in both molecules.

[edit] Licensing

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• Talk:Lac operon
• Allolactose
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