BIOC 2580 Lecture Notes - Lecture 6: Lipid Bilayer, Proteoglycan, Glycoprotein

• School: University of Guelph
• Department: Biochemistry
• Course: BIOC 2580
• Professor: Shannon De Roo

Document Summary

Monosaccharides: general formula: (ch2o)n, many have enantiomers, most monosaccharides tend to be in the d-enantiomer (oh on the right) orientation at the, d-enantiomer: highest numbered chiral carbon. To number carbons, start numbering at the end closest to the carbonyl group (c=o) L-enantiomer: oh on the left of chiral carbon. Ketoses: carbonyl group (c=o) between two carbons (fructose) Oh on the right of chiral carbon: aldoses, most monosaccharides form ring structures when the carbonyl group is attacked by a nucleophile (o- atom) from the highest numbered carbon (usually) Carbon number one is still the carbon bonded to two oxygens. : start by finding anomeric carbon which is the carbon bonded to two oxygens. Then, find carbon six and compare whether the oh on the anomeric carbon is on the same side as c6 or opposite: monosaccharides join in a condensation reaction in an o-glucosidic bond. Six membered rings are pyranoses (glucose) and five membered rings are furanoses (fructose)