Figure 1From: Antimycobacterial and cytotoxicity activity of microcystins General structure of microcystins (LR) with leucine (L) in the amino acid position 2 and arginine (R) in the amino acid position 4 and the structural differences in the position 1 of MC-LR (left) and [D-Leu 1 ] MC-LR (right). Back to article page