Learn R Programming

Peptides (version 0.2)

AI: To compute the Aliphatic index of a protein sequence

Description

The aliphatic index of a protein is defined as the relative volume occupied by aliphatic side chains (alanine, valine, isoleucine, and leucine). It may be regarded as a positive factor for the increase of thermostability of globular proteins.

Usage

AI(seq)

Arguments

seq
AA sequence string in upper case

References

Atsushi, I. K. A. I. (1980). Thermostability and aliphatic index of globular proteins. Journal of Biochemistry, 88(6), 1895-1898. ISO 690

Examples

Run this code
AI("KLKLLLLLKLK")
AI("FLPLLLPLFLP")

Run the code above in your browser using DataLab