5-Azacytidine-Induced Protein 1 (AZI1) Mouse Recombinant Protein

The protein encoding this gene is a centriolar satellite protein that localizes around the basal body via transport along microtubules. Knockdown in mouse fibroblasts results in a reduction in ciliogenesis. Null mutant mice display no discernible ciliary phenotypes and embryonic patterning and adult homeostasis are largely unaffected. Male mice are infertile, however, due to defects in microtubule trafficking in the sperm manchette and flagella. In addition, the protein binds to a complex of proteins associated with Bardet-Biedl syndrome called the BBSome, and depletion of this protein results in an accumulation of the BBSome in cilia. [provided by RefSeq, Oct 2014]

Component of centriolar satellites contributing to the building of a complex and dynamic network required to regulate cilia/flagellum formation. In proliferating cells, MIB1-mediated ubiquitination induces its sequestration within centriolar satellites, precluding untimely cilia formation initiation. In contrast, during normal and ultraviolet or heat shock cellular stress-induced ciliogenesis, its non-ubiquitinated form is rapidly displaced from centriolar satellites and recruited to centrosome/basal bodies in a microtubule- and p38 MAPK-dependent manner. Acts also as a negative regulator of BBSome ciliary trafficking (). Plays a role in sperm flagellar formation; may be involved in the regulation of intraflagellar transport (IFT) and/or intramanchette (IMT) trafficking, which are important for axoneme extension and/or cargo delivery to the nascent sperm tail (PubMed:24415959). Required for optimal cell proliferation and cell cycle progression; may play a role in the regulation of genome stability and centriole duplication in non-ciliogenic cells (). Involved in centriole duplication (PubMed:26297806). Required for CEP152, WDR62 and CEP63 centrosomal localization and promotes the centrosomal localization of CDK2 ().