A 54556A
Application Notes
A 54556A is an unusual depsipeptide isolated from Streptomyces hawaiiensis by researchers at Eli Lilly in 1985, featuring a trienone side chain. A 54556A is potently active against Gram positive and Gram negative bacteria, including MRSA. A 54556A was the original lead structure of the recently re-discovered acyldepsipeptide (ADEP) antibiotics that act by activating and disregulating Clp-family proteins. ADEPs are considered important leads in the development of new generations of antibiotics against resistant bacteria.
References
- A54556 antibiotics and process for production thereof. Michel K.H. and Kastner R.E. U.S. Patent 4,492,650 1985.
- Structures of ClpP in complex with acyldepsipeptide antibiotics reveal its activation mechanism. Lee B-G. et al., Nat. Struct. Molec. Biol. 2010, 17, 471.
- Antibiotic acyldepsipeptides activate ClpP peptidase to degrade the cell division protein FtsZ. Sass P. et al., PNAS 2011, 108, 17474.