W2 - PROTEINS

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4 Terms

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proteins

  • chains of amino acids, linked by peptide bonds

  • forms polypeptide chains

  • various structural levels

  • structural arrangement determines function

    • function dependent of structure

  • changes in body temperature and pH denatures proteins

2
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Fibrous proteins

  • structural (e.g. collagen, keratin, elastin)

  • movement (e.g. actin and myosin)

3
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globular proteins

  • functional - chemically active

  • enzymes - biologival catalysts

  • hemoglobin - transport oxygen

  • antibodies - defence

  • pH - act as acid/bases

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Protein synthesis

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