apy-1 encodes a membrane-bound uridine diphosphatase (UDPase, endo-apyrase) orthologous to human CANT1 and paralogous to ZK563.7; APY-1 is required for repression of the unfolded protein response of stressed endoplasmic reticulum (ER), for normally organized pharynx and thin muscle fibers in adults, and for normally high fertility, rapid growth, and long lifespan; apy-1 is transcriptionally activated by tunicamycin, 6% EtOH, or excess heat (25 degrees C), each of which stresses the ER, and this activation requires both ATF-6 and IRE-1; APY-1 can hydrolyze either UDP or GDP, but has more activity with UDP.
Enables GDP phosphatase activity and UDP phosphatase activity. Involved in several processes, including determination of adult lifespan; endoplasmic reticulum unfolded protein response; and ribonucleoside diphosphate catabolic process. Located in membrane. Expressed in hypodermis and pharynx. Human ortholog(s) of this gene implicated in Desbuquois dysplasia and multiple epiphyseal dysplasia 7. Is an ortholog of human CANT1 (calcium activated nucleotidase 1).
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.