[jason102]

I'm currently reviewing ochem for my MCAT and came across a question in my TPR guide while going over glycosidic linkages. It lists sucrose as an alpha-1,2 linkage. I remember learning in biochem that it is an alpha-1, beta-2 linkage. I'm wondering if this is an error in my book or if it can take on both forms. The picture for reference also shows it as an alpha-1,2 linkage.

[AWK]

β-D-fructofuranosyl-(2→1)-α-D-glucopyranoside

[Babcock_Hall]

https://en.wikipedia.org/wiki/Sucrose

Based on this drawing and your knowledge of α and β glycosidic bonds, what do you think?