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]
Netrins are a class of proteins involved in axon guidance. They are named after the Sanskrit word "netr", which means "one who guides". Netrins are genetically conserved across nematode worms, fruit flies, frogs, mice, and humans. Structurally, netrin resembles the extracellular matrix protein laminin.
Protein kinase C, zeta (PKCζ), also known as PRKCZ, is a protein in humans that is encoded by the PRKCZ gene. The PRKCZ gene encodes at least two alternative transcripts, the full-length PKCζ and an N-terminal truncated form PKMζ. PKMζ is thought to be responsible for maintaining long-term memories in the brain. The importance of PKCζ in the creation and maintenance of long-term potentiation was first described by Todd Sacktor and his colleagues at the SUNY Downstate Medical Center in 1993.
Disrupted in schizophrenia 1 is a protein that in humans is encoded by the DISC1 gene. In coordination with a wide array of interacting partners, DISC1 has been shown to participate in the regulation of cell proliferation, differentiation, migration, neuronal axon and dendrite outgrowth, mitochondrial transport, fission and/or fusion, and cell-to-cell adhesion. Several studies have shown that unregulated expression or altered protein structure of DISC1 may predispose individuals to the development of schizophrenia, clinical depression, bipolar disorder, and other psychiatric conditions. The cellular functions that are disrupted by permutations in DISC1, which lead to the development of these disorders, have yet to be clearly defined and are the subject of current ongoing research. Although, recent genetic studies of large schizophrenia cohorts have failed to implicate DISC1 as a risk gene at the gene level, the DISC1 interactome gene set was associated with schizophrenia, showing evidence from genome-wide association studies of the role of DISC1 and interacting partners in schizophrenia susceptibility.
Regulator of nonsense transcripts 1 is a protein that in humans is encoded by the UPF1 gene.
Calcium and integrin-binding protein 1 is a protein that in humans is encoded by the CIB1 gene.
PDZ and LIM domain protein 5 is a protein that in humans is encoded by the PDLIM5 gene.
Transcription elongation regulator 1, also known as TCERG1, is a protein which in humans is encoded by the TCERG1 gene.
C-jun-amino-terminal kinase-interacting protein 3 is an enzyme that in humans is encoded by the MAPK8IP3 gene.
Protein unc-84 homolog B is a protein that in humans is encoded by the UNC84B gene.
Diacylglycerol kinase zeta is an enzyme that in humans is encoded by the DGKZ gene.
Dynein light chain Tctex-type 1 is a protein that in humans is encoded by the DYNLT1 gene.
Clathrin interactor 1 (CLINT1), also known as EPSIN4, is a protein which in humans is encoded by the CLINT1 gene.
Neighbor of BRCA1 gene 1 protein is a protein that in humans is encoded by the NBR1 gene.
Dihydropyrimidinase-related protein 3 is an enzyme that in humans is encoded by the DPYSL3 gene.
Protein unc-84 homolog A is a protein that in humans is encoded by the UNC84A gene.
Spectrin, beta, non-erythrocytic 4, also known as SPTBN4, is a protein that in humans is encoded by the SPTBN4 gene.
Netrin receptor UNC5C is a protein that in humans is encoded by the UNC5C gene.
Fasciculation and elongation protein zeta-2 is a protein that in humans is encoded by the FEZ2 gene.
AuTophaGy related 1 (Atg1) is a 101.7kDa serine/threonine kinase in S.cerevisiae, encoded by the gene ATG1. It is essential for the initial building of the autophagosome and Cvt vesicles. In a non-kinase role it is - through complex formation with Atg13 and Atg17 - directly controlled by the TOR kinase, a sensor for nutrient availability.
In molecular biology, the FEZ-like protein family is a family of eukaryotic proteins thought to be involved in axonal outgrowth and fasciculation. The N-terminal regions of these sequences are less conserved than the C-terminal regions, and are highly acidic. The Caenorhabditis elegans homologue, UNC-76, may play structural and signalling roles in the control of axonal extension and adhesion and these roles have also been postulated for other FEZ family proteins. Certain homologues have been definitively found to interact with the N-terminal variable region (V1) of PKC-zeta, and this interaction causes cytoplasmic translocation of the FEZ family protein in mammalian neuronal cells. The C-terminal region probably participates in the association with the regulatory domain of PKC-zeta. The members of this family are predicted to form coiled-coil structures which may interact with members of the RhoA family of signalling proteins, but are not thought to contain other characteristic protein motifs. Certain members of this family are expressed almost exclusively in the brain, whereas others are expressed in other tissues, and are thought to perform similar but unknown functions in these tissues.