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

AIB49

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

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

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

R Value: Unknown

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

Conformation: Helical

Reference

Francis, A., Iqbal, M., Balaram, P. and Vijayan, M. (1983). Crystal structure of Boc-Ala-Aib-Ala-Aib-Aib-methyl ester, a pentapeptide fragment of the channel-forming ionophore suzukacillin. Biopolymers, 22(6), pp.1499-1505.

Chemical Component Summary

Name of Peptide: tert-Butyloxycarbonyl-Leucine-Alanine-Alpha amino iso butyric acid-Leucine-Alanine-Alpha amino iso butyric acid-Amino-iso-butyric-Methyl ester
Sequence: Boc-L-A-Aib-L-A-Aib-Aib-OMe
Core Sequence: L-A-Aib-L-A-Aib-Aib
Sequence Length: 7
Molecular Weight (amu): 755
Molecular Formula: C36-H65-N7-O10
R Value: Unknown
N-Terminal Modification: tert-Butyloxycarbonyl
C-Terminal Modification: Methyl ester
Conformation: Helical
Method: X - Ray Diffraction
Core Residue Involved Phi Psi Omega
Leucine 57.9 -36.9 -176.7
Alanine -55.5 -29.5 -175
Alpha amino iso butyric acid -64.4 -13 170.8
Leucine -54.7 -22.3 169.8
Alanine Unmeasured 51.2 177.1
Alpha amino iso butyric acid Unmeasured Unmeasured
Alpha amino iso butyric acid Unmeasured Unmeasured