Proteins

Tanay & Faba

Structure

The monomers that make up a protein macromolecule are called amino acids.


Amino acids always have two functional groups: Amine group (-NH2) and a Carboxyl group (-COOH).


The polymer formed by amino acids is called a protein.


The structure of a protein macromolecule directly affects the function that it does. In a protein, amino acids are linked together by peptide bonds. A peptide bond extracts extracts a water molecule as it joins the amino group of one amino acid to a carboxyl group.

Functions

Proteins have many different functions.


They are:


  • storing information for creating DNA
  • controlling rate of reactions
  • regulating cell processes
  • transporting substances to and from cells to fight disease


Examples