Hendecapeptides

Ciclosporin, also spelled cyclosporine and cyclosporin, is a calcineurin inhibitor, used as an immunosuppressant medication. It is taken orally or intravenously for rheumatoid arthritis, psoriasis, Crohn's disease, nephrotic syndrome, eczema, and in organ transplants to prevent rejection. It is also used as eye drops for keratoconjunctivitis sicca (dry eyes).

neuropeptide in human, associated with pain

Eledoisin is an undecapeptide of mollusk origin, belonging to the tachykinin family of neuropeptides.

NIM811 is a mitochondrial permeability transition inhibitor. Also known as '''N-methyl-4-isoleucine cyclosporin''', it is a substituted cyclosporine analog that binds to cyclophilin; however, this binary complex cannot bind to calcineurin, and therefore lacks immunosuppressive activity.

Physalaemin is a tachykinin peptide obtained from the Physalaemus frog, closely related to substance P. Its structure was first elucidated in 1964.