The series of molecular signals mediated by hypoxia-inducible factor (HIF1) in response to lowered oxygen levels (hypoxia). Under hypoxic conditions, the oxygen-sensitive alpha-subunit of hypoxia-inducible factor (HIF)-1 dimerizes with a HIF1-beta subunit (also called ARNT or aryl-hydrocarbon-receptor nuclear translocator), translocates to the nucleus and activates transcription of genes whose products participate in responding to hypoxia. [GOC:bf, GOC:jc, http://www.sabiosciences.com/pathway.php?sn=HIF1Alpha_Pathway]
Full description or abstract
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M5: Ontology GO: Gene Ontology GO:BP: GO Biological Process
