CYCLIC PEPTIDE, PEPTIDE COMPLEX, AND DRUG COMPOSITION CONTAINING SAID CYCLIC PEPTIDE AND/OR SAID PEPTIDE COMPLEX

摘要

The present invention relates to a cyclic peptide that contains a structure represented by formula (1) (In formula (1), Xaa1 is a basic amino acid, Xaa2 is any amino acid, Xaa3 and Xaa4 are each independently a basic amino acid or an aromatic amino acid, and n1 is an integer from 0-10.) or a pharmacologically acceptable salt of the cyclic peptide.