TABLE 1.

Peptide abbreviations and chemical sequences

Abbreviation	Sequencea
K	(PKG)10
D	(DOG)10
O	(POG)10
K*	(PKG)4PKGPKG(PKG)4
D*	(DOG)4DOGDOG(DOG)4
O*	(POG)4POGPOG(POG)4

^a The underlined amino acids are uniformly ¹⁵N,¹³C-labeled.