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Expression profile of the fermentation genes
The expression level of most fermentation genes decreases during the last two time-points, though there are three genes of which the expression level increases at least 2 times (see below).
Particularly gene FUN49 (ORF: YAL060w) has an expression increase of 3.87 times at time-point 6 compared to time-point 1. This gene has been annotated as a fermentation gene based on similarity (lower than one third of FASTA self-score) to a known protein alcohol/sorbitol dehydrogenase. Also gene YJR155W shows a 2.83 times increase at time point 6. This gene has been annotated as a fermentation gene based on strong similarity (higher than one third FASTA self-score) to aryl-alcohol dehydrogenase. Gene YNL331c, which has been annotated by strong similarity to aryl-alcohol reductase, shows a 2 times increase at time-point 6. None of the other annotated fermentation genes show expression increases of at least 2 times in any of the time-points, which is in accord to what should be expected (note that ratio of 2 is the reported measurement accuracy -- 95% of the measurements are expected to be within this error limit).
The graph below displays the average expression level of fermentation genes. Note the decrease in the expression level during the time-points 4 and 5, which is similar to such a decrease for the total average of all the genes.
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