Beta subunit of heterooctameric phosphofructokinase; involved in glycolysis; indispensable for anaerobic growth; activated by fructose-2,6-bisphosphate and AMP; mutation inhibits glucose induction of cell cycle-related genes; moonlighting protein that binds short mRNA sequence repeats, and contains 5'-3' dsRNA unwinding activity; dynamically associates with translating ribosomes, and promotes translation of cell cycle genes such as CLN3 and BUB3