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Protein Structure and Function. Lecture one. Objectives. To emphasize on the importance of proteins for living systemsTo understand the structure of amino acidsTo differentiate between different classes of amino acids according to the side chain. Functions of proteins . Are So variable although all proteins are linear polymers of Amino Acids (AA)Enzymes and polypeptide hormones ? metabolismContractile proteins ? movementStructural proteins ? form framework (e.g. collagen in bone is a fr9446

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    1. ??????? ??????? ?? ???? ???????? ??? ??? ??? ?? ?????? – ??? ???? ????? ??? – ???: ???? ???? ???? – ??? ???? ????? ???? ? ??? ??? ? ??? – ????: "???? ??????? ??????? ? ???? ??? ???? ?? ???? ??? ???? ????? ??? ???? ? ?????? ?????? ??? ???? ? ?????? ??? ???? ????? ????? ?????? ?? ????? ?????? ?????? ??? ?? ???? ????“

    2. Protein Structure and Function Lecture one

    3. Objectives To emphasize on the importance of proteins for living systems To understand the structure of amino acids To differentiate between different classes of amino acids according to the side chain

    4. Functions of proteins Are So variable although all proteins are linear polymers of Amino Acids (AA) Enzymes and polypeptide hormones ? metabolism Contractile proteins ? movement Structural proteins ? form framework (e.g. collagen in bone is a framework for the deposition of Ca2PO3 crystals) Blood proteins ? carriers (e.g. Hb, albumin) Blood proteins ? protection (e.g. Ig)

    5. Structure of AA

    6. Nonpolar vs. Polar

    7. Location of nonpolar & polar AA in soluble & membrane proteins.

    8. Classification of the 20 AA According to the properties of (R)

    9. Classification of the 20 AA, contin..

    10. Classification of the 20 AA, contin..

    11. Classification of the 20 AA, contin..

    12. Comparison of the imino group found in Pro with the ?-amino group found in other AA e.g. Ala

    13. Classification of the 20 AA, contin..

    14. Hydrogen bond between the phenolic –OH group of Tyr & another molecule containing a carbonyl group

    15. Classification of the 20 AA, contin..

    16. Oligosaccharides can be attached to proteins via:

    17. Classification of the 20 AA, contin..

    18. Classification of the 20 AA, contin…

    19. Classification of the 20 AA, contin…

    22. ”? ????? ???? ? ?????? ????“

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