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Flashcards: PROTEIN INTRODUCTION AND FUNCTION
primary protein structure
amino acid sequence; include only covalent peptide bond
secondary protein structure
the hydrogen bond between the amino acids backbone include alpha-helices and beta-pleated sheet
tertiary bonds
weak R group interactions of amino acid side chains
quaternary structure if protein
weak R group interaction between more than one polypeptide chain
R group interactions include:
ionic interactions, hydrophobic interactions, Hydrogen bonds, disulphide bonds, van der val interaction
proteins are classified as 2 groups
1. Fibrous protein(support protein shape) 2. Globular proteins(support function)
Fibrous proteins
water INSOLUBLE, low turnover, form connective tissues, help us to walk, run and move
globular protein
water soluble, high turnover. e.g. haemoglobin, insulin and amylase, etc...