PSL425H1 Lecture Notes - Portal Venous System, Portal Vein, Brush Border
Document Summary
Carbohydrates on of the most important circulating carbohydrates in our body is d-glucose (oh on carbon 5) important! b/c l0glucose not something we have in our body. Physiological one in our body is d-glucose, most enzymes specific for d-forms. 6c molecule; c=o aldehyde bond (glucose is a aldehyde) Oh adds here, and rest of the molecule adds to this carbon. By cyclizing: the new oh group can go on the right or left totally interchangeable - anomers. Sugar tautemerization carbon 5 oh onto c2 oh can add on either on the left or right of c2: forms 2 anomers (a- and b-forms) intramolecular reaction (i. e. within the molecule) Very similar 6c sugar is galactose (found in milk) Diff on carbon 4 (epimers) oh, glucose down, galactose up epimer of glucose. Double bond of fructose is on c2 i. e. it is a ketone: why cyclizes as a pentamer. Polysaccharides; glycogen from meat (muscles), starch (starchy vegetables)
