Western blot: 1: 500 - 1: 1000. Immunohistochemistry on paraffin sections: 1: 50 - 1: 200. Other applications not tested. Optimal dilutions are dependent on conditions and should be determined by the user.
Cell growth and viability is compromised by oxygen deprivation (hypoxia). Hypoxia-inducible factors, including HIF-1α, Arnt 1 (also designated HIF-1β), EPAS-1 (also designated HIF-2α) and HIF-3α, induce glycolysis, erythropoiesis and angiogenesis in order to restore oxygen homeostasis. Hypoxia-inducible factors are members of the Per-Arnt-Sim (PAS) domain transcription factor family. In response to hypoxi,a HIF-1α is upregulated and forms a heterodimer with Arnt 1 to form the HIF-1 complex. The HIF-1 complex recognizes and binds to the hypoxia responsive element (HRE) of hypoxia-inducible genes, thereby activating transcription. Hypoxia-inducible expression of some genes, such as Glut-1, p53, p21 or Bcl-2, is HIF-1α dependent, whereas expression of others, such as p27, GADD 153 or HO-1, is HIF-1α independent. EPAS-1 and HIF-3α have also been shown to form heterodimeric complexes with Arnt 1 in response to hypoxia.Synonyms: ARNT-interacting protein, BHLHE78, Basic-helix-loop-helix-PAS protein MOP1, Class E basic helix-loop-helix protein 78, HIF-1 alpha, Hypoxia-inducible factor 1 alpha, Member of PAS protein 1