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

DPA32

tert-Butyloxycarbonyl-Valine-α,β‐dehydrophenylalanine-Phenylalanine-Alanine-Leucine-Alanine-α,β‐dehydrophenylalanine-Leucine

Sequence: Boc-V-ΔF-F-A-L-A-ΔF-L-OH

Core Sequence: V-ΔF-F-A-L-A-ΔF

R Value: 0.075

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

Conformation: Schellman Motif -3(10) helix

Reference

Rajashankar, K., Ramakumar, S., Jain, R. and Chauhan, V. (1996). Helix Termination and Chain Reversal: Crystal and Molecular Structure of the α, β-Dehydrooctapeptide Boc-Val-ΔPhe-Phe-Ala-Leu-Ala-ΔPhe-Leu-OH. Journal of Biomolecular Structure and Dynamics, 13(4), pp.641-647.

Chemical Component Summary

Name of Peptide: tert-Butyloxycarbonyl-Valine-α,β‐dehydrophenylalanine-Phenylalanine-Alanine-Leucine-Alanine-α,β‐dehydrophenylalanine-Leucine
Sequence: Boc-V-ΔF-F-A-L-A-ΔF-L-OH
Core Sequence: V-ΔF-F-A-L-A-ΔF
Sequence Length: 7
Molecular Weight (amu): 1023.2
Molecular Formula: C55-H74-N8-O11-1H2-0
R Value: 0.075
N-Terminal Modification: tert-Butyloxycarbonyl
C-Terminal Modification:
Conformation: Schellman Motif -3(10) helix
Method: X - Ray Diffraction
Core Residue Involved Phi Psi Omega
Valine -66.3 -21.5 171.3
α,β‐dehydrophenylalanine -55.6 -21.3 176.1
Phenylalanine -67 -12 174.5
Alanine -63.9 -23.3 175.5
Leucine -60.5 -30.3 177.1
Alanine -98.1 15.4 174.5
α,β‐dehydrophenylalanine 84.2 9.6 -170.2