The function of Ensembl gene identifier ENSG00000198954 (KIFBP, kinesin family binding protein) is as follows. Activator of KIF1B plus-end-directed microtubule motor activity (PubMed:16225668). Required for organization of axonal microtubules, and axonal outgrowth and maintenance during peripheral and central nervous system development. {ECO:0000269|PubMed:16225668, ECO:0000269|PubMed:20621975, ECO:0000269|PubMed:23427148}.