By consensus, known lepidopteran antimicrobial peptides are arranged into the families of defensins, cecropins and moricins, attacins, gloverins, and lebocins (Rayaprolu et al.
virescens hemolymph such as cecropins (P83413, P83414, P83415), heliocin (P83427; Gennaro et al.
Several inducible AMPs including cecropins
, sarcotoxins, defensins, thanatin, droscosin and coleoptericins had been well characterized in terms of the structures and mechanisms [20,21,22,23].
Among AMPs, cecropins (Cec) are small (~4 kDa) peptides containing 35 to 39 amino acids, which are amphipathic, as a high proportion of basic amino acids are present at the N-terminus conferring a net positive charge and the hydrophobic amino acids are rich at the C-terminus (Sipos et al.
Cecropin P1 and novel nematode cecropins: a bacteriainducible antimicrobial peptide family in the nematode Ascaris suum.
Andreu and colleagues (31), during study on cecropins suggested that AMPs containing more tryptophan are being active against microorganisms.
N-terminal analogues of cecropin A: synthesis, antibacterial activity, and conformational properties.
2) In 1981, the sequences of two antimicrobial peptides, cecropins
A and B, were identified in moths.
Zasloff suspects that magainins may be the vertebrate counterpart of cecropins
, 37-amino-acid-long antibacterial peptides found circulating in insects such as the Cecropia moth, which lacks both lymphocytes and antibodies.
Among the most common and well-studied antimicrobial peptides are the defensins, found in humans, the magainins, found in frogs, and the cecropins
and melitins, found in insects.
Among the most common and well-studied antimicrobial peptides are the defensins found in humans, the magainins found in frogs, and the cecropins
and melitins found in insects.
are the key to the moth's immune defense system which kills invading bacteria and other pathogenic microbes by selectively disrupting the microbes' cell membranes.