What are antibacterial peptides?

antibacterial peptides are short chains of amino acids that the body uses to kill infectious bacteria. They are part of the innate immune response of the body, so they are non -specific in their activities. Sometimes these peptides are called antimicrobial peptides because they are able to kill other organisms such as viruses and fungi as well as tumor cells. They are sour, so they have a positive charge. The size and charge of these peptides have important consequences for their role in immunity. The production of these peptides within immune cells can take place rapidly due to their small size. This allows the body to create a large amount of peptides to fight a large number of rapidly divided bacteria.

Most bacteria have a negatively charged cell membrane. Therefore, antimicrobial peptides that have a positive charge are attracted to them. Host cells of the body have a superficial cholesterto cause them neutral, so these peptides do not focus on them. Can open pores in a membrane of bacterial cells or may vsTop into the membrane and act inside. Once these peptides are inside the bacteria, they can damage bacterial organelles, prevent DNA replication, or disrupt cell division.

With several exceptions, these peptides always close their actions by causing the disintegration of cell membranes known as lie. This process completely destroys bacteria. Many times, however, these peptides actually killed bacteria by other means in front of the lie.

There are other functions that perform antibacterial peptides in addition to direct killing of infectious organisms. Peptides can help wounds to recover, cause immune cells around expresses diff.ERTIVE genes, or take certain steps against nearby bacteria. They may act as signaling molecules that cause immune cells to support multiple cells to arrive at the site of injury. All these actions contribute to cleaning the infection from the body.

bacteria can be reThey can be resistant to some peptides, as can be resistant to antibiotic drugs. Resistance usually takes the form of changes to their cellular surface, making it difficult for and attacking peptides. In general, however, the body can work around these defense mechanisms. Hundreds of types of antibacterial peptides are produced in the body with slight changes in mold and function. Such diversity allows the body to fight infection and face to face.