A manually curated database of peptides containing Dehydro-Phenyl-Alanine and Amino-Iso-Butyric Acid
Protein Data Bank[PDB] Structured Data File [SDF]

DPA31

tert-Butyloxycarbonyl-Valine-α,β‐dehydrophenylalanine-Alanine-Leucine-Glycine-Methyl ester

Sequence: Boc-V-ΔF-A-L-G-OMe

Core Sequence: V-ΔF-A-L

R Value: 0.059

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

Conformation: Alpha helical

Reference

Rajashankar, K., Ramakumar, S., Jain, R. and Chauhan, V. (1995). First observation of an .alpha.-helix in .alpha.,.beta.-dehydrooligopeptides: Crystal structure of Boc-Val-.DELTA.Phe-Ala-Leu-Gly-OMe. Journal of the American Chemical Society, 117(40), pp.10129-10130.

Chemical Component Summary

Name of Peptide: tert-Butyloxycarbonyl-Valine-α,β‐dehydrophenylalanine-Alanine-Leucine-Glycine-Methyl ester
Sequence: Boc-V-ΔF-A-L-G-OMe
Core Sequence: V-ΔF-A-L
Sequence Length: 4
Molecular Weight (amu): 681.8
Molecular Formula: C31-H47-N5O8-2C-H3-O-H
R Value: 0.059
N-Terminal Modification: tert-Butyloxycarbonyl
C-Terminal Modification: Methyl ester
Conformation: Alpha helical
Method: X - Ray Diffraction
Core Residue Involved Phi Psi Omega
Valine -57.9 -36.8 179.6
α,β‐dehydrophenylalanine -60.2 -23.2 175.4
Alanine -95.3 -35.0 178.6
Leucine -68.5 -32.2 -178.5