Abstract
A novel receptor guanylyl cyclase (GC) has been identified from the oriental fruit fly Bactrocera dorsalis (Hendel) and has been designated BdmGC-1. Protein domain analysis revealed that BdmGC-1 possesses a characteristic domain organization similar to all known receptor GCs but with a unique carboxyl-terminal extension. When overexpressed in 293T cells, BdmGC-1 manifests as a cell-surface glycoprotein with a marked cGMP-generating activity but is unresponsive to all ligands known to activate mammalian receptor GCs. BdmGC-1 mRNAs were highly expressed during development but had low or no expression in adult tissues. On the basis of its unique sequence and distinct developmental expression pattern, BdmGC-1 represents a novel receptor GC that may play a critical role during the development of B. dorsalis.
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