Ac-FLTD-CMK 

Ac-FLTD-CMK, a gasdermin D (GSDMD)-derived inhibitor, is a specific inflammatory caspases inhibitor. Ac-FLTD-CMK is effective against caspases-1 (IC₅₀ of 46.7 nM), caspases-4 (IC₅₀ of 1.49 μM), caspases-5 (IC₅₀ of 329 nM), and caspases-11 , but not the apoptotic caspases such as caspase-3^[1].

Ac-FLTD-CMK, inhibits GSDMD cleavage by caspases-1, -4, -5, and -11 in vitro, suppresses pyroptosis downstream of both canonical and noncanonical inflammasomes, as well as reduces IL-1β release following activation of the NLRP3 inflammasome in macrophages. By contrast, Ac-FLTD-CMK does not target caspase-3 or apoptotic cell death. Crystal structure of caspase-1 in complex with Ac-FLTD-CMK reveals extensive enzyme-inhibitor interactions involving both hydrogen bonds and hydrophobic contacts^[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

569.05

Solid

C₂₆H₃₇ClN₄O₈

2376255-48-8

ClCC([[email protected]](CC(O)=O)NC([[email protected]]([[email protected]](O)C)NC([[email protected]](CC(C)C)NC([[email protected]@H](NC(C)=O)CC1=CC=CC=C1)=O)=O)=O)=O

Room temperature in continental US; may vary elsewhere.

-20°C, protect from light, stored under nitrogen

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen)

• [1]. Jie Yang, et al. Mechanism of gasdermin D recognition by inflammatory caspases and their inhibition by a gasdermin D-derived peptide inhibitor. Proc Natl Acad Sci U S A. 2018 Jun 26;115(26):6792-6797.  [Content Brief]