(center map) (center map)PMID:12351678 identification of PHD2 as a HIF1A prolyl hydroxylase PMID:15652751 inhibition of HIF1A prolyl hydroxylation by succinate and fumarate PMID:15721254 in 293 cells, OS9 interacts with HIF1 and PHD and promotes HIF1A prolylhydroxylation and degradation