A manually curated database of peptides containing Dehydro-Phenyl-Alanine and Amino-Iso-Butyric Acid

DPA4

N-Acetyl-α,β‐dehydrophenylalanine-Alanine-α,β‐dehydrophenylalanine-Methylamide

Sequence: Ac-ΔF-A-ΔF-NHMe

Core Sequence: ΔF-A-ΔF

R Value: 0.051

Residue Involved: α,β‐dehydrophenylalanine | Alanine | α,β‐dehydrophenylalanine

Conformation: Right-handed 3(10) helical

Reference

Ciajolo, M., Tuzi, A., Pratesi, C., Fissi, A. and Pieroni, O. (1992). Crystal and molecular structure of the doubly unsaturated dehydropeptide Ac-?Phe-Ala-?Phe-NH-Me. Biopolymers, 32(7), pp.717-724.

Chemical Component Summary

Name of Peptide: N-Acetyl-α,β‐dehydrophenylalanine-Alanine-α,β‐dehydrophenylalanine-Methylamide
Sequence: Ac-ΔF-A-ΔF-NHMe
Core Sequence: ΔF-A-ΔF
Sequence Length: 3
Molecular Weight (amu): 436.36
Molecular Formula: C24- O4-N4 H26
R Value: 0.051
N-Terminal Modification: Acetyl
C-Terminal Modification: Methylamide
Conformation: Right-handed 3(10) helical
Method: X - Ray Diffraction
Core Residue Involved Phi Psi Omega
α,β‐dehydrophenylalanine -49 -26.1 178
Alanine -56.5 -26.8 175
α,β‐dehydrophenylalanine 57.7 -23.1 -178.5