Alternatives
A reversible enzyme with a similar function, Pyruvate phosphate dikinase (PPDK), is found in some bacteria and has been transferred to a number of anaerobic eukaryote groups (for example, Streblomastix, Giardia, Entamoeba, and Trichomonas), it seems via horizontal gene transfer on two or more occasions. In some cases, the same organism will have both Pyruvate kinase and PPDK.
Read more about this topic: Pyruvate Kinase
Famous quotes containing the word alternatives:
“The literal alternatives to [abortion] are suicide, motherhood, and, some would add, madness. Consequently, there is some confusion, discomfort, and cynicism greeting efforts to find or emphasize or identify alternatives to abortion.”
—Connie J. Downey (b. 1934)
“The last alternatives they face
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—Ann Oakley (b. 1944)