lesson 6 amino acids and proteins
TRANSCRIPT
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AMINO ACID AND PROTEIN STRUCTURE
To know the chemical reactions involved in the formation of proteins
To know the types of bond formed when proteins fold
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AMINO ACIDS (PRIMARY STRUCTURE)… 20 different amino acids Different ‘R’ groups Form hydrogen, covalent and ionic bonds as
well as hydrophobic and hydrophillic interactions between R-groups
Removed as urea Amine Group
Acid Group
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AMINO ACIDS (PRIMARY STRUCTURE)… 20 different amino acids Different ‘R’ groups Form hydrogen, covalent and ionic bonds as
well as hydrophobic and hydrophillic interactions between R-groups
Removed as urea Amine Group
Acid Group
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CONDENSATION TO FORM A ‘DIPEPTIDE’… Amino group + carboxyl group Forms a peptide bond (C – N) Amino acids dipeptide + water
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HYDROLYSIS OF A DIPEPTIDE… Dipeptide + water amino acids
Complete qus 1-3 pg 22
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FORMING A POLYPEPTIDE (PROTEIN)…
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EXPLAIN WHY THIS HAPPENS…
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LEVELS OF PROTEIN STRUCTURE…
Level of structure
Types of structure
Bonds in structure
Description of shape
Primary (1°)
Secondary (2°)Tertiary (3°)
Quaternary (4°)
Complete using pgs 19-21
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F212: 2.1.1 B-EKEY EXAMPLES OF MAMMALIAN PROTEINS
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HOW WOULD YOU BUILD AN ENZYME?
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HAEMOGLOBIN...
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COLLAGEN...
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EXAM QUESTIONS... Notes/table to compare structure and
properties of collagen and haemoglobin PG 149 QU 4 – COLLAGEN & CELLULOSE QU 6c,d – ENZYME STRUCTURE