| abstract |
The present invention is a labeled peptide formed from a non-naturally occurring amino acid sequence that is represented by formula (1).n(XFNXN) m X p (XFNXN) n X q (1) (In formula (1), each X is independently an aspartic acid residue or a glutamic acid residue, F is a phenylalanine residue, N is an asparagine residue, m is an integer of 0 to 5, n is an integer of 1 to 5, p is an integer of 1 to 20, and q is an integer of 1 to 4.) |