The Hypoxia Inducible Factors (HIFs) are a family of mammalian transcription factors which are expressed in response to low cellular oxygen concentrations (hypoxia). Three human hypoxia inducible factors have been identified, HIF-1, HIF-2 and HIF-3, each having an alpha and a beta subunit.
Orthologs are one of the classes of homolog genes. They occur in different species, but are linked by a common ancestral pathway. During evolution, they retain the same original function, irrespective of the species. Among the orthologs covered on our antibody databaseare those of the Forkhead Transcription Factor (FOX) superfamily of proteins.
We at Novus Biologicals offer a full antibody database targeted to transcription factor research. Recently, CEBP antibodieswere used in a research study exploring the evolution of gene regulation in various vertebrates. The results revealed surprising discrepancies between genomes, and the conservation of transcription factor function over large evolutionary distances.
At Novus Biologicals, we recently added a new RNA Polymerase II antibody (clone 4H8) to our antibody catalog. RNAPII is an essential transcription enzyme, catalyzing the transcription of DNA during the elongation stage of mRNA synthesis (known as the RNA polymerase II elongation complex.) RNAPII transcription is commonly recognized as the primary site of gene expression in eukaryotes, and is the most studied of the RNA polymerase enzymes.
