in a bacterium, where are proteins synthesized?

Protein synthesis

Where do proteins come from and what are they made of? Proteins are long chains of individual units called amino acids. Amino acids link together like beads on a chain to make proteins. The instructions for making proteins are found in DNA. In bacteria, DNA is found packaged in the bacterial chromosomes of the cell. DNA markers are transcribed into RNA. Transcription is a way of taking information from DNA and making RNA. RNA acts as a coupling agent between DNA and proteins. This allows the DNA to sit securely in one part of the cell. Ribosomes are protein-producing factories found in all cells, from humans to bacteria. The ribosome will scan the RNA, like a train going down a track, adding amino acids to the protein being produced. When the ribosome reaches the end of the RNA, the protein is released. This process is called translation. In bacteria, transcription and translation are often linked. When a piece of RNA is being made, it is immediately introduced into the ribosome to begin making the actual protein. Protein translation in ribosomes

Protein synthesis inhibitor

Read more: Filmed in Covington: Footloose 2011 | Q&A top There are a number of molecules that can block protein synthesis in bacteria. As mentioned above, there are several stages of protein synthesis that must occur in order to make proteins. Many drugs that we call antibiotics are protein synthesis inhibitors. An antibiotic is something that is used to kill bacteria (called bacteriostatic) or to stop bacteria from growing (called bacteriostatic). For example, the antibiotic tetracycline prevents amino acids from entering the ribosome. If a bacterium cannot take amino acids, it certainly cannot make proteins. Other classes of antibiotics, such as aminoglycosides, prevent the production of ribosomes. Without ribosomal factories, proteins cannot be produced. Read more: Where is asbestos found in cars