Figure 1.

Heterologous expression of TRP and TRPL gives rise to large amounts of TRP and TRPL proteins. Western blots show the expression of TRP (a) and TRPL (b) in oocytes injected with cRNA of trp, trpl, and trp+trpl, as indicated. Control (uninjected oocytes) and extract of three wild-type Drosophila heads (Drosophila) show that the equivalent molecular sizes of the Drosophila TRP and TRPL were produced in the oocytes, which cannot be confused with endogenous oocyte protein of similar structure and size. The data of this figure were highly reproducible in oocytes from different frogs (n = 8).