H2N O. NH O NH2 НН nisin lanthipeptide 7) This partial structure is an antibacterial natural product called nisin isolated from Lactococcus lactis. Please find the following functional groups, circle one of them and write the corresponding letter next to the circled functional group A) Alcohol, B) Amine, C) Amide, D) Carboxylic Acid, E) Alkene, F) Heterocycle. Extra Credit: Circle and name an amino acid H2N O. NH O NH2 НН nisin lanthipeptide 7) This partial structure is an antibacterial natural product called nisin isolated from Lactococcus lactis. Please find the following functional groups, circle one of them and write the corresponding letter next to the circled functional group A) Alcohol, B) Amine, C) Amide, D) Carboxylic Acid, E) Alkene, F) Heterocycle. Extra Credit: Circle and name an amino acid