NOVEL PEPTIDES, DERIVATIVES THEREOF, PROCESS FOR PRODUCING THE SAME, NOVEL STRAINS PRODUCING THE SAME AND ANTIVIRAL AGENTS CONTAINING THE SAME AS THE ACTIVE INGEDIENT

摘要

(1) A peptide having, as the constituting amino acids, 4 glutamine residues, a glutamic acid residue, a serine residue, 2 valine residues, an isoleucine residue and 5 leucine residues wherein a 3-hydroxydecanoyl group is bonded via an amide bond to the N-terminal leucine, and derivatives thereof; (2) a peptide having, as the constituting amino acids, 4 glutamine residues, a glutamic acid residue, a serine residue, 3 valine residues, and 5 leucine residues wherein a 3-hydroxydecanoyl group is bonded via an amide bond to the N-terminal leucine; (3) a peptide having, as the constituting amino acids, 4 glutamine residues, a glutamic acid residue, a serine residue, 2 valine residues, an isoleucine residue and 5 leucine residues wherein a 3-hydroxydodeca-5-enoyl group is bonded via an amide bond to the N-terminal leucine; and salts of the peptides (1) and (3); (4) novel strains belonging to the genus Pseudomonas; and (5) antiviral agents containing as the active ingredient at least one member selected from among the peptides (1) to (3), derivatives and salts thereof and the novel strains (4).