Calpain Inhibitor-1 (compound 36) is a highly potent and selective inhibitor of Calpain 1 (Cal1), which is a cysteine protease. It exhibits an IC50 value of 100 nM and a Ki value of 2.89 μM.
ALLM (Calpain inhibitor II), a potent calpain and cathepsin protease inhibitor, not only prevents neuronal cell death but also enhances chronic neurological function following spinal cord injury (SCI)[1][2].
SJA6017 is a inhibitor of calpain-1 (IC50 = 7.5 nM) and calpain-2 ( IC50 = 78 nM). SJA6017 also inhibits cathepsins B (IC50s = 15 nM) and cathepsins L (IC50s = 1.6 nM). SJA6017 reduces apoptotic cell death, preserves spinal cord tissue and improves functi
Calpastatin (184-210), an acetylated synthetic peptide derived from human calpastatin, effectively inhibits the calcium-dependent cysteine proteases, calpain I (µ-calpain) and calpain II (m-calpain), which require micromolar and millimolar calcium concentrations, respectively. Unlike its action on calpains, this 27 amino acid peptide does not inhibit papain (a cysteine protease) or trypsin (a serine protease). Encoded by exon 1B of Ac-calpastatin (184-210), it aligns with a section of inhibitory domain 1, showcasing its specificity and inhibitory function towards calpain enzymes.