DNA, RNA, and protein synthesis machinery

The processes of DNA, RNA, and protein synthesis—often collectively termed "gene expression machinery"—are central to all living cells. DNA synthesis (replication) copies genetic material, RNA synthesis (transcription) converts DNA information into messenger RNA (mRNA), and protein synthesis (translation) decodes mRNA to build proteins, typically at the ribosome. These processes underpin cellular function, heredity, and adaptation, and are targeted by many classes of drugs, including antibiotics, antivirals, and chemotherapies[4][1][6]. Defects or dysregulation in these pathways are central to the development of cancer and numerous genetic diseases.

Other names

gene expression machinerycentral dogma processestranscription/translation machinery

Inhibition of transcription (e.g., rifampicin blocks bacterial RNA polymerase) Inhibition of translation (e.g., aminoglycosides block ribosomal function) DNA damage and crosslinking (e.g., chemotherapy drugs) Nucleic acid analog incorporation (antivirals/antimetabolites)