Inhibition of D-Ala:D-Ala ligase through a phosphorylated form of the antibiotic D-cycloserine.
Batson, S., de Chiara, C., Majce, V., Lloyd, A.J., Gobec, S., Rea, D., Fulop, V., Thoroughgood, C.W., Simmons, K.J., Dowson, C.G., Fishwick, C.W.G., de Carvalho, L.P.S., Roper, D.I.(2017) Nat Commun 8: 1939-1939
- PubMed: 29208891 
- DOI: https://doi.org/10.1038/s41467-017-02118-7
- Primary Citation of Related Structures:  
4C5A, 4C5B, 4C5C - PubMed Abstract: 
D-cycloserine is an antibiotic which targets sequential bacterial cell wall peptidoglycan biosynthesis enzymes: alanine racemase and D-alanine:D-alanine ligase. By a combination of structural, chemical and mechanistic studies here we show that the inhibition of D-alanine:D-alanine ligase by the antibiotic D-cycloserine proceeds via a distinct phosphorylated form of the drug. This mechanistic insight reveals a bimodal mechanism of action for a single antibiotic on different enzyme targets and has significance for the design of future inhibitor molecules based on this chemical structure.
Organizational Affiliation: 
School of Life Sciences, University of Warwick, Coventry CV4 7AL, UK.