BCH210H1 Lecture 3: L3

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15 Feb 2017
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BCH210H1 Full Course Notes
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BCH210H1 Full Course Notes
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Lecture 3: sucrase; an enzyme that is found in our intestines, metabolizes sucrose into both glucose and fructose. 20 amino acids: (acdefghiklmnpqrstvwy*: 10 amino acids must be consumed through our diet, zwitterinoic, have both positive and negative charges that cancel each other out, amino acids are joined through peptide bonds in proteins. Tryptophan, (trp, w): fluorescent, if you excite a protein with light at 295nm it will emit light at a higher wavelength at 350nm, the light emitted (fluorescence) is dependent on the environment of the tryptophan. If it"s in a hydrophobic environment; the fluorescence is very high blue shifts (low wavelength) Formation of a peptide bond: condensation reaction; produces water, proteins are composed polymers of amino acids held together by peptide bonds. Formation of peptide bonds occurs on the ribosomes: hydrolysis reaction; addition of water, breaks apart a peptide bond and disassembles the protein. Glutamate vs valine: -- refer back to sickle cell anemia.

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