Introduction:

The tool takes a peak table file as input and expands the reaction ratio variable from KEGG pathway database. The first column of peak table must be denoted by compound name.

Input files:

1. Peak table file in Tab-delimited text format with the first column denoted by compound name.

For example:

AlignID	STDmix_GC_01	STDmix_GC_02	STDmix_GC_03
1	1486892478	561322777	3448620272
Nitrogen dioxide	5492977592	684434115	3265669981
Ethanol, 2-fluoro-	2265686433	4182838129	4365291513
3-Pentanone, 2,2,4,4-tetramethyl-	13390154	12612932	21155307
Hydrazine	14588107	8510918	7224351

Output files:

1. 'Ratio.txt', only contains reaction ratio variable.

2. 'AllMet_and_Ratio.txt', contains all metabolites and reaction ratio variable.

3. 'reactions_info.txt', detail Information about reaction ratio.