NUTR100 Lecture Notes - Kidney Disease, Protein Structure, Veganism
30 Apr 2013
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Document Summary
Proteins: proteins are large complex molecules composed of amino acids, contain carbon, hydrogen, oxygen, nitrogen, primary source of nitrogen in our diets, 20 different amino acids are used to make protein. Essential amino acids: cannot be produced by our bodies, must be obtained from food. Nonessential amino acids: can be made by our bodies, made by transferring amino groups (transamination) How are proteins made: proteins are long chains of amino acids, amino acids are joined to each other by peptide bonds, the structure of each protein is dictated by the dna of a gene. Transcription: use of the genetic information in dna to make messenger rna (mrna) Translation: conversion of genetic info in mrna to a chain of amino acids t form a protein. Incomplete protein: doesn"t contain all essential amino acids in sufficient amounts. Proteins in the diet: not sufficient for growth and health, considered a low quality protein.
