Biotechnology research is developing into genomic analyses that involve the
simultaneous monitoring of thousands of genes. The development of various
bioinformatics resources that provide efficient access to information is ne
cessary. We have used single-pass sequencing of randomly selected cDNA clon
es to generate expressed sequence tags (ESTs). These ESTs data has been wid
ely used to study gene expression in a variety of heart libraries [1, 2]. D
ata annotation on our recent finding allows us to construct the profiles of
genes in the energy metabolizing pathways (glycolysis and glycogen metabol
ism) that are expressed in heart cDNA libraries. In silico studies of genes
of energy metabolism yields data that are consistent with results derived
from conventional metabolic experiments. The change in gene profiles descri
bing the metabolism of diseased hearts is also presented here.