Fasciculation and elongation protein zeta-1 is a protein that in humans is encoded by the FEZ1 gene. [5] [6] [7]
This gene is an ortholog of the C. elegans unc-76 gene, which is necessary for normal axonal bundling and elongation within axon bundles. Expression of this gene in C. elegans unc-76 mutants can restore to the mutants partial locomotion and axonal fasciculation, suggesting that it also functions in axonal outgrowth. The N-terminal half of the gene product is highly acidic. Alternatively spliced transcript variants encoding different isoforms of this protein have been described. [7]
This protein is present in neurons, and it is believed to block the process of infection of these cells by HIV. [8]
FEZ1 has been shown to interact with Protein kinase Mζ, [9] NBR1 [10] and DISC1. [11]