CAT and infection: Except these S. aureus contain a number of virulence factors such as adhesion proteins, chemotaxis inhibitory proteins, various enzymes such as proteases, lipases, hyaluronidase, staphylokinase, catalase, nucleases, lipases, coagulase, catalase, proteases, collagenases, β-lactamases, and elastases which help the S. aureus in causing infection in host.