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

AIB31

tert-Butyloxycarbonyl-Valine-Alanine-Leucine-Alpha amino iso butyric acid-Valine-Alanine-Leucine-Methyl ester

Sequence: Boc-V-A-L-Aib-V-A-L-OMe

Core Sequence: V-A-L-Aib-V-A-L

R Value: 0.087

Residue Involved: Valine| Alanine| Leucine| Alpha amino iso butyric acid | Valine| Alanine| Leucine

Conformation: Alpha helical

Reference

Karle, I., Flippen-Anderson, J., Uma, K. and Balaram, P. (1993). Unfolding of an ?-helix in peptide crystals by solvation: Conformational fragility in a heptapeptide. Biopolymers, 33(5), pp.827-837.

Chemical Component Summary

Name of Peptide: tert-Butyloxycarbonyl-Valine-Alanine-Leucine-Alpha amino iso butyric acid-Valine-Alanine-Leucine-Methyl ester
Sequence: Boc-V-A-L-Aib-V-A-L-OMe
Core Sequence: V-A-L-Aib-V-A-L
Sequence Length: 7
Molecular Weight (amu): 784
Molecular Formula: C38-H69-N7-O10
R Value: 0.087
N-Terminal Modification: tert-Butyloxycarbonyl
C-Terminal Modification: Methyl ester
Conformation: Alpha helical
Method: X - Ray Diffraction
Core Residue Involved Phi Psi Omega
Valine -75 -36 177
Alanine -76 -44 -179
Leucine -62 -29 -179
Alpha amino iso butyric acid -59 -28 -176
Valine -109 17 -180
Alanine -102 153 -169
Leucine -86 159 176