Proteins
- Created by: Jasmin
- Created on: 19-10-13 17:45
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- Proteins
- Amino acids are basic monomer units which combine to make up a polymer called a polypeptide
- Functions
- As enzymes they catalyse reactions
- As carrier proteins they transport molecules
- Anitbodies defend against disease
- Structural proteins collagen
- Haemoglobin for respiratory
- Structure
- Allows it to carry out its function. Each has a different/specific molecular shape which enables the protein to do its job
- What is an amino acid?
- Each AA has central C atom to which 4 different chemical groups are attached
- Hydrogen atom H
- Variable R group
- Variety of different chemical groups. This group differs one AA to another
- Carboxyl group COOH
- Amino group NH2
- Each AA has central C atom to which 4 different chemical groups are attached
- 8 essential AAs must be obtained from diet. 12 can be synthesised by body
- Formation of a peptide bond: molecule of water removed
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