This domain family is found in eukaryotes, and is approximately 50 amino acids in length. The family is found in association with Pfam:PF00225, Pfam:PF00498. KIF1B is an anterograde motor for transport of mitochondria in axons of neuronal cells.

1: The neuron-specific kinesin superfamily protein KIF1A is a unique monomeric motor for anterograde axonal transport of synaptic vesicle precursors. Okada Y, Yamazaki H, Sekine-Aizawa Y, Hirokawa N; Cell. 1995;81:769-780. PMID:7539720