Helicobacter pylori 30S ribosomal subunit (30S subunit)

The Helicobacter pylori 30S ribosomal subunit is a fundamental component of the bacterial protein synthesis machinery, serving as the primary site for mRNA decoding and translation initiation (UniProt, 2023). It is composed of the 16S ribosomal RNA (rRNA) and approximately 21 ribosomal proteins, forming a complex that ensures the fidelity of genetic translation (PubMed: 31503231). This subunit is a major pharmacological target for antibiotics such as tetracyclines, which bind to the 16S rRNA to block the entry of aminoacyl-tRNA into the A-site, thereby halting protein production (PubChem, 2024). H. pylori infections are a primary cause of chronic gastritis and peptic ulcers, and they are strongly associated with the development of gastric adenocarcinoma and MALT lymphoma (StatPearls, 2023). The clinical efficacy of drugs targeting the 30S subunit is increasingly threatened by the emergence of resistance, often mediated by specific point mutations in the 16S rRNA gene (PubMed: 15933035). Consequently, the 30S subunit remains a focal point for structural biology and drug discovery efforts aimed at overcoming antibiotic-resistant strains of H. pylori.

Other names

Small ribosomal subunit30S ribosomeH. pylori 30S subunit16S ribosomal RNA complex

Inhibition of bacterial protein synthesis by binding to the 16S rRNA of the 30S ribosomal subunit, which prevents the association of aminoacyl-tRNA with the ribosomal A-site.