Bêta-galactoside


Bêta-galactoside

Un β-galactoside est un type de galactoside dans lequel la liaison osidique est au-dessus du plan du galactose. Le β-galactoside plus commun et connu en biochimie est le lactose.

On compte aussi dans cette famille l'ortho-nitrophényl-β-galactoside (ONPG), synthétisé en général pour des dosages.

Une enzyme capable de briser la liaison β-galactoside est appelée une β-galactosidase.


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