Bacterial cell membrane, viral envelope, and fungal cell wall or membrane

"Bacterial cell membranes, viral envelopes, and fungal cell walls or membranes" is not a single molecular target but a broad group of fundamental biological barriers found in bacteria, viruses, and fungi. - The **bacterial cell membrane** is a phospholipid bilayer containing proteins and, in some cases, other lipids like hopanoids. It serves as a selectively permeable barrier, site of energy generation, and location for numerous transporters and enzymes[1][3][5][7][9]. - The **fungal cell wall** is a complex, multilayered structure mainly composed of chitin and β-glucan, which protects the fungal cell, determines cell shape, and allows adaptation to environmental stress[2][4][6][10]. Fungal membranes contain ergosterol, a major antifungal drug target. - The **viral envelope** is a lipid bilayer derived from host membranes, surrounding some viruses and containing viral glycoproteins required for binding and fusion with host cells. Because these structures are crucial for pathogen survival but different from analogous host components, they are common broad-spectrum therapeutic targets for antimicrobials and antifungals. However, as this entry aggregates several functionally and structurally diverse targets, it should not be considered a single canonical drug target. Rather, each barrier has its own molecular definition, drug interactions, and therapeutic relevance.

Other names

Bacterial membraneFungal membraneFungal cell wallViral envelope

- Disruption of membrane or wall integrity, leading to cell lysis or leakage - Inhibition of synthesis of key components (e.g., ergosterol, glucan, peptidoglycan) - Inhibition of viral entry/fusion via blocking envelope fusion