Basic-helix-loop-helix-PAS protein MOP7 ; HIF3-alpha-1 ; Inhibitory PAS domain protein ; IPAS ; Member of PAS protein 7 ; Neonatal and embryonic PAS protein ; Mop7 ; Nepas
Categories
Elisa
Function
Involved in adaptive response to hypoxia. Suppresses hypoxia-inducible expression of HIF1A and EPAS1. Binds to core DNA sequence 5'-TACGTG-3' within the hypoxia response element (HRE) of target gene promoters. The complex HIF3A-ARNT activates the transcription of reporter genes driven by HRE. Isoform 2 has a dominant-negative function of inactivating HIF1-mediated transcription. Isoform 2 attenuates the binding of HIF1 to hypoxia-responsive elements (HRE), thus inhibiting HRE-driven transcription. Hypoxia induces down-regulation of isoform 2, leading to activation of HIF1A in hypoxia. Conversely, upon restoring normoxia, the expression of isoform 2 increases and thereby secures an inhibition of HIF1A activity (By similarity). May be a negative regulator of hypoxia-inducible gene expression in the kidney. May be involved in renal tumorigenesis. Functions as an inhibitor of angiogenesis in the cornea.
Specificity
Natural and recombinant Mouse Hypoxia-inducible factor 3-alpha