Proteins Flashcards
What are the main functions of proteins
Catalyze chemical reactions Transport substances in the body Provide structural support Enable organisms to move Regulate cellular processes Provide defense from disease
What is a protein
A protein is a macromolecule made up of amino acid monomers
What is an amino acid
Amino acids are composed of a central carbon atom bonded to an amino group, a carboxyl group, and R group and a hydrogen atom
Amino acids are joined by…
Covalent bonds called peptide bonds
What occurs in the primary structure in protein organization
The linear sequence of amino acids that determines the function of the protein
What occurs in the quaternary structure in protein organization
Shows how polypeptides associate with one another
What is the primary structure of a polpeptide
The linear sequence of an amino, this is then determined by nucleotide sequences of DNA & RNA molecules
What is denaturation
When proteins unfold the bonding between R groups is disturbed, thus weakening the intermolecular forces. Denaturation will cause a protein to no longer perform its usual function