Biochemistry 2280A Lecture Notes - Lecture 9: Anomer, Fischer Projection, Ketose
28 Oct 2016
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Document Summary
Monosaccharides can be joined together to make polysaccharides (many) Same for central carbon in amino acids except glycine arranged. Glyceraldehyde: 3 carbons and each carbon has oxygen bonded to it. Characteristic of monosaccharides: either have hydroxyl groups or carbonyl (c=o) bonded to the carbons. Represented by fischer projections: horizontal bonds stick out and vertical are in the page. Amino acids can be d or l and so can carbohydrates depending on their structure. L left: sugar are predominantly d-sugar (amino acids are l) D- sugars mainly formed by living organisms. Picture: isomers same molecular formula: all carbons bonded to oh except for 1 carbon bonded to oxygen twice. Every monosaccharide: there is always 1 carbon that has 2 bonds to oxygen: all the other carbons have 1 bond to oxygen. Number them based on where the double bonded oxygen is start numbering from that end of the molecule.
