Recombinant Listeriolysin O lacking both the signal secretion sequence and the PEST- like sequence. LLO-PEST minus is composed of 471 amino acids, starting from amino acid 60 to amino acid 529, with the addition of a methionine in its NH2-terminus.
Source
Escherichia Coli.
Storage Buffer
The protein contains 50mM NaH2PO4, 1mM EDTA, 2.7mM KCl, 1mM DTT, 5% glycerol and 0.5M NaCl.