Abstract
Abstract Termites are generally deficient in pyruvate dehydrogenase (PDH), which links glycolysis to the Krebs cycle; however, one termite species, Coptotermes formosanus, has some PDH activity, though it is not enough to maintain the respiration of the termite by itself. We obtained a high quality annotated draft genome of C. formosanus. We found that all genes constituting the PDH complex and controlling PDH activity are present in the genome of C. formosanus, except for the PDH protein X component that is essential for a functional PDH complex. Additionally, we found that C. formosanus has three endo-s-1,4-glucanases (EGs), for which the amino acid sequences differ from those of previously reported EGs. Despite the ability of termites to convert cellulose to glucose and the resulting glucose to pyruvate, PDH is likely to function poorly due to a missing X component of the PDH complex.
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