Chap 2 - Chap 2 20 amino acids name and structure D or L 1...

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Chap 2 20 amino acids name and structure
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D or L 1) Swap carboxyl group to top of drawing 2) Move R group to bottom 3) If possible move NH2 left 4) If even number of swaps then L if odd then D Peptide Bonds Post Translational Modifications Acetyl group + Amino Acid = protein resistant to degradation
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stabilizes newly sysnthized collagen fibers which helps in scurvy Y-carboxyglutamate = helps in vitamin K deficiency, prevents hemorrhaging Phosphoserine and Phosphothreonine = most modified Amino Acid in proteins Ramchandran Plot - tool used for analyzing structure of protein , – β easier to attack because its spaced out , α harder to attack because its coiled up , rotation around C + NH2 φ α , rotation around C + C=O ψ α Screw sense can be right handed, clockwise or left handed counterclockwise Right handed is more favorable/ less steric clash between side chains and backbone. All
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This note was uploaded on 04/18/2008 for the course BIOCHEM 694:301 taught by Professor Deis during the Spring '08 term at Rutgers.

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Chap 2 - Chap 2 20 amino acids name and structure D or L 1...

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