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PMID:10949028

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Citation

Hopper, NA, Lee, J and Sternberg, PW (2000) ARK-1 inhibits EGFR signaling in C. elegans. Mol. Cell 6:65-75

Abstract

A screen for synthetic enhancers of sli-1 identified ark-1 (forAck-related tyrosine kinase), a novel inhibitor of let-23 EGFR signaling in C. elegans. An ark-1 mutation synergizes with mutations in other negative regulators of let-23, resulting in increased RAS signaling. Genetic analysis suggests that ARK-1 acts upstream of RAS and is dependent upon SEM-5. ARK-1 inhibits LET-23-mediated ovulation, a RAS-independent function. ARK-1 physically interacts with SEM-5 in the yeast two-hybrid assay. We find that sem-5 also has a negative function in let-23-mediated ovulation and suggest that this negative function is mediated by the recruitment of inhibitors such as ARK-1.

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Keywords

Amino Acid Sequence; Animals; Caenorhabditis elegans/genetics; Caenorhabditis elegans/growth & development; Caenorhabditis elegans/metabolism; Caenorhabditis elegans Proteins; Cloning, Molecular; Female; Fertility/physiology; Genes, Helminth; Genes, Lethal; Genes, ras; Helminth Proteins/metabolism; Models, Biological; Molecular Sequence Data; Mutation; Ovulation/physiology; Protein-Tyrosine Kinases/genetics; Protein-Tyrosine Kinases/metabolism; Receptor, Epidermal Growth Factor/metabolism; Sequence Homology, Amino Acid; Signal Transduction; Two-Hybrid System Techniques; Vulva/growth & development

Significance

Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status


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