Abstract:

Hypoxia-inducible factor-1 (HIF-1) has been shown to mediate the transcriptional activation of its target genes in response to oxygen concentration, most likely via a pathway involving a specific oxygen sensor. Molecular cloning of HIF-1 has shown that this widely expressed, DNA binding transcription factor is a heterodimer of two proteins, HIF-1 alpha and HIF-1 beta. A major control of HIF-1 activity by oxygen tension is achieved by changes in the level of the HIF-1 alpha subunit, which comp...

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