The function of BPGM (bisphosphoglycerate mutase, Ensembl gene identifier ENSG00000172331) is as follows. Plays a major role in regulating hemoglobin oxygen affinity by controlling the levels of its allosteric effector 2,3- bisphosphoglycerate (2,3-BPG). Also exhibits mutase (EC 5.4.2.11) activity. .