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PROTEINS (AMINO ACID (has a central carbon attached to (an amino/amine…
PROTEINS
AMINO ACID
the monomer of proteins
20 naturally occuring amino acids in proteins
has a central carbon attached to
an amino/amine group (-NH2)
a carboxyl group (-COOH)
an R group - this can vary in every amino acid. all naturally occurring amino acids differ by their R group
a Hydrogen atom
PRIMARY STRUCTURE OF PROTEINS
many amino acids joined together by a process called polymerisation
this forms a long chain called polypeptides
this determines the ultimate shape and function of the protein
SECONDARY STRUCTURE OF PROTEINS
hydrogen bonds form between the amino acids in the chain
this makes the chain coil or fold
a helix is when the chain coils
b pleated is when the chain folds
THE FORMATION OF A PEPTIDE BOND
this happens during a condensaton reaction
a molecule of water is removed
an OH is removed from the carboxyl group
the H is removed from the amino group
TERTIARY STRUCTURE