Ribbon diagram of the crystal structure of XOL-1, the primary determinant of sexual fate in C. elegans

Crystal structure of XOL-1

The structure unexpectedly showed XOL-1 to be a member of the GHMP kinase family. XOL-1 structure is merged with a Nomarski photomicrograph of a C. elegans male and hermaphrodite mating pair (cyan false color).

Photo courtesy of Howard Hughes Investigator and Professor Barbara Meyer.