Table I

Abundance ratio variations among peptides derived from selected proteins

The number of unique, ICAT reagent-labeled peptides identified by tandem mass spectrometry is given for each protein, along with the average ratio of abundance for the peptides on the galactose carbon source relative to the ethanol carbon source and the standard deviation between these ratios.

ProteinDescriptionNo. of peptidesGal/Eth
Cdc19Pyruvate kinase52.7 ± 0.5
Gre3Aldose reductase31.8 ± 0.2
Cox12Cytochrome coxidase30.73 ± 0.09
Ahp1Alkyl hydroperoxide reductase34.6 ± 0.3
Yef3Translation elongation factor EF-3A32.1 ± 0.4
Ald6Cytosolic acetaldehyde dehydrogenase50.87 ± 0.2
Hom2Aspartate-semialdehyde dehydrogenase30.89 ± 0.1
Psa1Mannose-1-phosphate guanyltransferase31.4 ± 0.2