Fetal Alz-50 clone 1 interacts with the human orthologue of the Kelch-like Ech-associated protein
| Autor: | Aryn H. Gittis, Gordon D. Strachan, Linda L. Otis, Robert Bowser, John Caltagarone, Kathleen L. Morgan, Kelly L. Jordan-Sciutto |
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| Rok vydání: | 2018 |
| Předmět: |
Cytoplasm
NF-E2-Related Factor 2 Amino Acid Motifs Nerve Tissue Proteins Plasma protein binding Biology Binding Competitive Biochemistry DNA-binding protein Article Cell Line Mice Two-Hybrid System Techniques Animals Humans Transcription factor Kelch-Like ECH-Associated Protein 1 Intracellular Signaling Peptides and Proteins Maleates Proteins Antigens Nuclear Fibroblasts Molecular biology Fusion protein KEAP1 Actins Protein Structure Tertiary Transport protein DNA-Binding Proteins Protein Transport Gene Expression Regulation FOS: Biological sciences Trans-Activators 69999 Biological Sciences not elsewhere classified Protein Binding Transcription Factors Binding domain |
| DOI: | 10.1184/r1/6098918.v1 |
| Popis: | The fetal Alz-50 reactive clone 1 (FAC1) protein exhibits altered expression and subcellular localization during neuronal development and neurodegenerative diseases such as Alzheimer's disease. Using the yeast two-hybrid screen, the human orthologue of Keap1 (hKeap1) was identified as a FAC1 interacting protein. Keap1 is an important regulator of the oxidative stress response pathway through its interaction with the Nrf family of transcription factors. An interaction between full-length FAC1 and hKeap1 proteins has been demonstrated, and the FAC1 binding domain of hKeap1 has been identified as the Kelch repeats. In addition, FAC1 colocalizes with endogenous Keap1 within the cytoplasm of PT67 cells. Exogenously introduced eGFP:hKeap1 fusion protein redistributed FAC1 to colocalize with eGFP: hKeap1 in perinuclear, spherical structures. The interaction between FAC1 and hKeap1 is reduced by competition with the Nrf2 protein. However, competition by Nrf2 for hKeap1 is reduced by diethylmaleate (DEM), a known disrupter of the Nrf2:Keap1 interaction. DEM does not affect the ability of FAC1 to bind hKeap1 in our assay. These results suggest that hKeap1 regulates FAC1 in addition to its known role in control of Nrf2. Furthermore, the observed competition between FAC1 and Nrf2 for binding hKeap1 indicates that the interplay between these three proteins has important implications for neuronal response to oxidative stress. |
| Databáze: | OpenAIRE |
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