Kinesin Gene Family in Dictyostelium. Schematic representation of the 13 kinesin motors, identified by functional and/or sequence analyses (adapted from ref ). The motor domain is indicated in blue, along with the common family name. The remaining neck/linker/tail domains are drawn to scale in green. Both formal and Dictyostelium-specific gene names are listed. Preexisting gene knockouts for six of the kinesins are indicated by the black X's (kif5, kif7, kif1, kif13, kif12, kif2, [7, 10, 12-14, 46]): new gene disruptions reported in this paper are indicated by the red X's.