part of cytosol 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase complex GO:0043540 A homodimeric, bifunctional enzyme complex which catalyzes the synthesis and degradation of fructose 2,6-bisphosphate, and is required for both glycolysis and gluconeogenesis. 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 4 complex Note that we use this single class to represent all 4 isoforms of this complex. We decided to do this because the isoforms do not differ in function, rather in expression and regulation. We may want to revisit this in future. 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 1 complex 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 3 complex 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 2 complex cellular_component transferase complex, transferring phosphorus-containing groups