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| penicillin |
-interferes w/ cell wall synthesis and breakdown |
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mcs5109 Mon, 03 Nov 2008 02:34:34 GMT |
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| peptidoglycan layer |
-linear chains of N-acetylglucosamine and N-acetylmuramic acid
-lactic acid
-ala-isoglu-lys-ala peptidoglycan linkages |
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mcs5109 Mon, 03 Nov 2008 02:34:34 GMT |
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| gram negative |
-cytoplasm
-PM
-periplasmic space
-peptidoglycan layer
-outer membrane |
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mcs5109 Mon, 03 Nov 2008 02:34:34 GMT |
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| gram positive |
-cytoplasm
-PM
-peptidoglycan layer |
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mcs5109 Mon, 03 Nov 2008 02:34:34 GMT |
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| glucosidase |
-removes 1 glucose at a time |
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mcs5109 Mon, 03 Nov 2008 01:59:39 GMT |
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| amylase |
-catalyzes random cleavages |
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mcs5109 Mon, 03 Nov 2008 01:59:39 GMT |
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| how many reducing ends in branched chain? |
-1
-OH can open up to =O free aldehyde
-other end can't give free aldehyde; would have to break glycosidic bond |
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mcs5109 Mon, 03 Nov 2008 01:59:39 GMT |
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| cellulose |
-B1-4 linkages glycosidic bonds
-we can't digest |
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mcs5109 Mon, 03 Nov 2008 01:59:39 GMT |
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| sucrose |
-both anomeric carbons in linkage, thus not a reducing sugar |
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mcs5109 Mon, 03 Nov 2008 01:53:21 GMT |
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| difference b/w maltose and cellibose? |
-maltose= alpha linkages, product of starch
-cellibose= beta linkages, product of cellulose |
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mcs5109 Mon, 03 Nov 2008 01:53:21 GMT |
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| Methylation analysis |
-know: Methyl ethers can't be hydrolyzed
-polysaccharide exhaustively methylated
-hydrolyzed
-Free OH groups of resulting methylated monosaccharides mark former positions of glycosidic bonds |
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mcs5109 Mon, 03 Nov 2008 01:53:21 GMT |
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| polysaccarides |
-aka glycans
-consist of monosacchrides linked by glycosidic bonds
-branched or linear
- |
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mcs5109 Mon, 03 Nov 2008 01:53:21 GMT |
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| glucose family |
-glucose
-glucosamine
-N-acetyl B D glucosamine
-B D glucose 6 phosphate
-muramic acid
-N-acetylmuramic acid
-B D glucuronate
-D gluconate
-D glucono gamma lactone |
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mcs5109 Mon, 03 Nov 2008 01:43:06 GMT |
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| ascorbic acid |
-gamma lactone
-from uronic acid |
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mcs5109 Mon, 03 Nov 2008 01:43:06 GMT |
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| if uronic acids internally esterify |
-forms 5- and 6- membered lactones |
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mcs5109 Mon, 03 Nov 2008 01:43:06 GMT |
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| lactone |
-ester
-acid + alcohol
-smells yummy
-uronic acids form internal esters (like lactone) |
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mcs5109 Mon, 03 Nov 2008 01:43:06 GMT |
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| oxidation of primary alcohols of aldoses leads to... |
...uronic acids
-glucuronic acid
-galacturonic acid
-mannuronic acid |
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mcs5109 Mon, 03 Nov 2008 01:33:46 GMT |
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| glycosidic bond |
-equal to peptide bonds for proteins
-links carbs to something else via ester |
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mcs5109 Mon, 03 Nov 2008 01:33:46 GMT |
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| boat/chair conformations |
know. them. |
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mcs5109 Mon, 03 Nov 2008 01:33:46 GMT |
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| anomeric carbon |
-C with carbonyl |
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mcs5109 Mon, 03 Nov 2008 01:26:47 GMT |
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| beta carbon |
-OH on opposite side
-B or balanced! |
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mcs5109 Mon, 03 Nov 2008 01:26:47 GMT |
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| alpha carbon |
-OH of anomeric carbon on same side as O of highest chiral carbon of Fisher projection |
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mcs5109 Mon, 03 Nov 2008 01:26:47 GMT |
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| cyclic structures |
-ex: fructose
-furanose and pyranose structures can also be drawn
-depends on what more stable structure is
-ketones generally furanose structures |
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mcs5109 Mon, 03 Nov 2008 01:26:47 GMT |
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| know structures of these ketoses |
-dihydroxyacetone
-ribulose
-xylulose
-fructose |
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mcs5109 Mon, 03 Nov 2008 01:17:23 GMT |
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| know structures of these aldoses |
-glyceraldehyde
-erthrose
-threose
-ribose
-xylose
-glucose
-mannose
-galactose |
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mcs5109 Mon, 03 Nov 2008 01:17:23 GMT |
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| sugar chirality |
-D sugars predominate in nature |
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mcs5109 Mon, 03 Nov 2008 01:17:23 GMT |
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| basic sugar info |
-Carbons fixed by photosynthesis made into carbo (CH2O)n |
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mcs5109 Mon, 03 Nov 2008 01:17:23 GMT |
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