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What is the structure of protein?

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What is the structure of protein?

    • Posted by Abhishek Kala 6 years, 9 months ago

    CBSE > Class 11 > Biology
    • 2 answers

    Yogita Ingle 6 years, 9 months ago

    • Primary structure
      • Linear sequence of amino acids in a polypeptide
      • This sequence is determined by genes and hereditary material, DNA. Correct sequence is important for proper functioning.
    • Secondary structure
      • Primary structure does not make a protein functional
      • Due to interactions with immediate neighbors, polypeptides tend to fold into pleats or wrap into coils forming the Secondary structure
        • Polypeptides folding into coils form alpha-helix structure
        • Polypeptides folding into plates form beta-plated structure. This structure is less stable than alpha-helix structure.
    • Tertiary structure
      • Bonds between neighboring amino acids results in further folded structure
      • Tertiary structure depends upon the primary structure
      • Creates active sites of enzymatic proteins
      • Some of the tertiary structures are spherical forming Globular proteins; while some others are like long fibers forming Fibrous proteins
    • Quaternary structure
      • Multiple chains of polypeptides held together by hydrogen bonds
      • Proteins with multiple chains of polypeptides only have this structure

    1Thank You

    Priya Shyam 6 years, 9 months ago

    Get the structure of protein io page no 150 of NCERT book figure no 9.3 and 9.4

    1Thank You

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