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

AIB52

(Z)-Alpha amino iso butyric acid-Proline-Alpha amino iso butyric acid-Alanine-Methyl ester

Sequence: (Z)-Aib-P-Aib-A-OMe

Core Sequence: Aib-P-Aib-A

R Value: Unknown

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

Conformation: 3(10) helical

Reference

Nagaraj, R. and Balaram, P. (1981). Alamethicin, a transmembrane channel. Accounts of Chemical Research, 14(11), pp.356-362.

Chemical Component Summary

Name of Peptide: (Z)-Alpha amino iso butyric acid-Proline-Alpha amino iso butyric acid-Alanine-Methyl ester
Sequence: (Z)-Aib-P-Aib-A-OMe
Core Sequence: Aib-P-Aib-A
Sequence Length: 4
Molecular Weight (amu): 504
Molecular Formula: C35-H36-N4-O7
R Value: Unknown
N-Terminal Modification: Phenylmethoxycarbonyl
C-Terminal Modification: Methyl ester
Conformation: 3(10) helical
Method: X - Ray Diffraction
Core Residue Involved Phi Psi Omega
Alpha amino iso butyric acid -50.7 -45.6 -171
Proline -54.9 -36 -170.1
Alpha amino iso butyric acid -71.7 -11 -173.1
Alanine -67.9 155.5