protein and amino acids

Anusorn Cherdthong, PhD137748 Applied Biochemistry in Nutritional Science

Email: anusornc@kku.ac.thE-learning: http://ags.kku.ac.th/eLearning/137748

Protein and Amino Acids

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)

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”

Amino acid characteristics

OpenStax College (2013)

Structure of 20 amino acid

McDonald et al. (2011)

Zwitter amino acid

McDonald et al. (2011)

Type of amino acids

Neutral nonpolar amino acidsNeutral polar amino acidsAcidic amino acidsBasic amino acids

Peptide

>2 amino acidsDipeptide 2 AATripeptide 3 AAPolypeptide >3 AA

Peptide bond

McDonald et al. (2011)

Role of peptide

Glutathione Oxytocin EnkephalinsThyrotropinAntibiotics

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.

Protein structure

Primary structure Secondary structureTertiary structure Quaternary structure

OpenStax College (2013)

Primary structure

such as DNA, RNA or typical

intracellular protein

Secondary structuresuch as proteins and nucleic

acids (DNA/RNA)

Tertiary structure

Protein or any other macromolecule is its three-

dimensional structure

Quaternary structure

Arrangement of multiple folded protein or coiling protein molecules in a multi-subunit

complex

Protein classification

Configuration Chemical composition Nutrient composition Role Part of protein Protein in animal science

Role of protein

Parts of the bodyTransport proteinCell synthesisEnzymesHormonesGrowth Productionprotective proteinReproductiveStorage proteinContractile protein

Conclusion

1

2

3

Role of AA and protein

Types of AA and protein

Structure of AA and protein

Thank you!