aaextractindex extracts information from the AAINDEX database for use by pepwindow and pepwindowall. AAINDEX is a database containing properties of amino acids. The AAINDEX database file aaindex1 can be downloaded from ftp://ftp.genome.ad.jp/pub/db/genomenet/aaindex/aaindex1.

Here is a sample session with aaindexextract:

% aaindexextract
Extract data from AAINDEX
Full pathname of file aaindex1: ~/aaindex1

Mandatory qualifiers:

[-inf] (infile)

Full pathname of file aaindex1.