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10 Cards in this Set
- Front
- Back
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Who discovered alpha and beta sheets?
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Linus Pauling
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What is the difference between alpha and beta sheets?
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beta:
-parallel or antiparallel -H bonding perpendicular to plane of sheet -big R groups alpha: -H bonding every 4th AA maintaining helical structure -small R groups |
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What are helix formers, sheet formers, and helix breakers?
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Helix formers:
-leucine, methionine, and glutamate Sheet formers: -isoleucine, valine, and phenylalanine Helix breakers: -glycine and proline |
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What are motifs?
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localized region (not whole structure)
consist of both alpha and beta |
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What is Central Dogma of NA?
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Transcription:
-RNA copy from DNA template Translation: -producing polypeptide using mRNA as a template unidirectional |
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What is a nucleotide and a nucleoside?
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nucleotide = sugar, base, and phosphate group
nucleoside = nucleotide - phosphate group |
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What are some properties of DNA?
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C triple bonded to G stronger than A double bonded to T
bases oriented in center where they hydrogen bond |
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What pollysaccharides are found in the cell walls of bacteria?
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GlcNac and MurNac
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What are different types of lipids?
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triacylglycerols = storage lipids
phospholipids = membrane structure glycolipids = specialized membrane components |
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What are saturated vs. unsaturated FA?
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saturated = no double bounds, allow tight packing (solids)
unsaturated = has double bonds, more fluidity |
