Bafilomycin A1: Mechanism of Action and Multidisciplinary Applications Research Review

1. Discovery and Basic Characteristics of Bafilomycin A1

Bafilomycin A1 is a macrolide antibiotic with significant biological functions, first discovered in the 1980s. Researchers isolated this compound from the culture broth of Streptomyces griseus. As a secondary metabolite found in nature, Bafilomycin A1 exhibits a unique molecular structure and remarkable bioactivity.

Chemically, Bafilomycin A1 belongs to the macrolide family, featuring a 16-membered lactone ring and multiple hydroxyl substituents within its molecular structure. This special structural characteristic allows it to bind with high affinity to specific biological targets. Notably, at room temperature, Bafilomycin A1 appears as white to light yellow crystalline powder; its molecular formula is C35H58O9, molecular weight is 622.83 g/mol, and CAS registration number is 88899-55-2.

2. Detailed Mechanism of Action of Bafilomycin A1

2.1 Structure and Physiological Function of V-ATPase V-ATPase (vacuolar-type H⁺-ATPase) is a multi-subunit membrane protein complex widely present in eukaryotic cells that plays a central role in maintaining intracellular pH homeostasis and organelle acidification processes. Structurally, V-ATPase consists of two main functional domains: the V1 domain responsible for ATP hydrolysis contains eight different subunits (A-H), while the V0 domain responsible for proton transport includes at least six subunits (a,c,c',c