[125I]DTyr-Gly-[(Nle28,31)CCK-26-33

Ligand id: 6666

Name: [125I]DTyr-Gly-[(Nle28,31)CCK-26-33    

Peptide Sequence
YGDYXGWXDF
Tyr-Gly-Asp-Tys-Nle-Gly-Trp-Nle-Asp-Phe
Chemical Modification
The native sequence of CCK 26-33 is Asp-Tyr-Met-Gly-Trp-Met-Asp-Phe-Asp. C terminal tyrosine at position 1 is the D isomer, Tyr4 is sulphated (OSO3H shown as Tys), and the N terminal is amidated. Both methionines are replaced with norleucine (Nle). Iodinated on the tyrosine at position 1.