Use of AntibioticsProteins present in the form of three-dimensional folds, which are determined by covalent intramolecular disulfide bonds and a number of noncovalent bonds such as ionic bonding, hydrophobic, and hydrogen. This form is called the tertiary structure of the protein, which is easily disturbed by a number of chemical or physical agent, causing the protein to be not working. Examples of antibiotics which will cause denaturation of proteins, namely: Group tetracyclines, macrolides Group.