Staphylococcus aureus 70S ribosome (70S ribosome)

The Staphylococcus aureus ribosome is a complex 70S ribonucleoprotein machinery essential for the translation of genetic information into functional proteins within the cell (Wilson, 2014, Nat Rev Microbiol). It is composed of two major subunits: the small 30S subunit, which facilitates the decoding of messenger RNA (mRNA), and the large 50S subunit, which catalyzes peptide bond formation at the peptidyl transferase center (PTC). As a critical component of bacterial survival and virulence, the ribosome is a primary target for several major classes of antibiotics, including macrolides, tetracyclines, and oxazolidinones (Foster, 2017, Frontiers in Microbiology). These therapeutic agents typically bind to highly conserved regions of the ribosomal RNA (rRNA) to arrest protein synthesis, leading to bacteriostatic or bactericidal effects. However, S. aureus has developed sophisticated resistance mechanisms, such as the enzymatic methylation of rRNA by Erm methyltransferases or point mutations in the 23S rRNA, which hinder drug binding and complicate the treatment of multidrug-resistant infections like MRSA (Munita & Arias, 2016, Microbiol Spectr).

Other names

Bacterial ribosomeS. aureus ribosome70S translation complexStaphylococcal ribosome

Inhibition of bacterial protein synthesis by binding to specific sites on the 30S or 50S ribosomal subunits, which interferes with mRNA decoding, tRNA binding, or the peptidyl transferase reaction.