egg-3 encodes a member of the protein tyrosine phosphatase-like (PTPL) family; EGG-3 activity is required for proper regulation of the cell surface and cortical rearrangements that occur during egg activation in response to sperm entry; EGG-3 physically interacts with EGG-4/5 and the MBK-2 kinase to sequester MBK-2 at the oocyte cortex prior to meiosis, thus preventing MBK-2 from phosphorylating its substrates, such as cytoplasmic MEI-1/katanin; EGG-3 initially localizes to the oocyte cortex, but during anaphase of meiosis I moves into the cytoplasm where it is degraded allowing for activation of MBK-2.
Enables protein kinase binding activity. Involved in cortical actin cytoskeleton organization; female gamete generation; and positive regulation of protein localization to cell cortex. Located in cell cortex.
Map position created from combination of previous interpolated map position (based on known location of sequence) and allele information. Therefore this is not a genetic map position based on recombination frequencies or genetic experiments. This was done on advice of the CGC.