Protein and Amino Acids
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Anusorn Cherdthong, PhD137748 Applied Biochemistry in Nutritional Science
Email: [email protected]: http://ags.kku.ac.th/eLearning/137748
Protein and Amino Acids
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Introduction
Organic compound with high MWSimilar CHO, fat but contained S Growth and repaired Essential for blood, tissue, enzymes,
immune and hormone (Riis, 1983; McDonald et al., 2011)
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Amino acid characteristics
Are biologically important organic compounds made from amine (-NH2) and carboxylic acid (-COOH) functional groups.
Amino acid, carbon, hydrogen, oxygen, and nitrogen.
20 standard amino acids, 9 of the 20 standard amino acids are called “essential”
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Amino acid characteristics
OpenStax College (2013)
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Structure of 20 amino acid
McDonald et al. (2011)
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Zwitter amino acid
McDonald et al. (2011)
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Type of amino acids
Neutral nonpolar amino acidsNeutral polar amino acidsAcidic amino acidsBasic amino acids
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Peptide
>2 amino acidsDipeptide 2 AATripeptide 3 AAPolypeptide >3 AA
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Peptide bond
McDonald et al. (2011)
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Role of peptide
Glutathione Oxytocin EnkephalinsThyrotropinAntibiotics
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Protein characteristics
More than 100 molecule AA Protein are large biological molecules
consisting of one or more chains of amino acid.
Proteins perform a vast array of functions within living organisms
A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups.
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Protein structure
Primary structure Secondary structureTertiary structure Quaternary structure
OpenStax College (2013)
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Primary structure
such as DNA, RNA or typical
intracellular protein
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Secondary structuresuch as proteins and nucleic
acids (DNA/RNA)
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Tertiary structure
Protein or any other macromolecule is its three-
dimensional structure
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Quaternary structure
Arrangement of multiple folded protein or coiling protein molecules in a multi-subunit
complex
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Protein classification
Configuration Chemical composition Nutrient composition Role Part of protein Protein in animal science
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Role of protein
Parts of the bodyTransport proteinCell synthesisEnzymesHormonesGrowth Productionprotective proteinReproductiveStorage proteinContractile protein
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Conclusion
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Role of AA and protein
Types of AA and protein
Structure of AA and protein
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Thank you!