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

AIB4

Pivaloyl-Proline-Alanine-Alpha amino iso butyric acid-Leucine-Alpha amino iso butyric acid-Phenylalanine-Methyl ester

Sequence: Piv-P-A-Aib-L-Aib-F-OMe

Core Sequence: P-A-Aib-L-Aib-F

R Value: Unknown

Residue Involved: Proline | Alanine| Alpha amino iso butyric acid | Leucine| Alpha amino iso butyric acid | Phenylalanine

Conformation: Helical

Reference

Kantharaju, Raghothama, S., Aravinda, S., Shamala, N. and Balaram, P. (2010). Helical conformations of hexapeptides containing N-terminus diproline segments. Biopolymers, 94(3), pp.360-370.

Chemical Component Summary

Name of Peptide: Pivaloyl-Proline-Alanine-Alpha amino iso butyric acid-Leucine-Alpha amino iso butyric acid-Phenylalanine-Methyl ester
Sequence: Piv-P-A-Aib-L-Aib-F-OMe
Core Sequence: P-A-Aib-L-Aib-F
Sequence Length: 6
Molecular Weight (amu): 714.89
Molecular Formula: C37-H58-N6O8
R Value: Unknown
N-Terminal Modification: Pivaloyl
C-Terminal Modification: Methyl ester
Conformation: Helical
Method: X - Ray Diffraction
Core Residue Involved Phi Psi Omega
Proline -63.4 135.2 172.8
Alanine 59.9 16.6
Alpha amino iso butyric acid 50.1 31.4 -169.8
Leucine -51.4 29.4 -178.9
Alpha amino iso butyric acid 55.4 34.9 -178.9
Phenylalanine -53.3 138.5 170.4