Kinesin-like protein KIF1B (KIF1B)

Kinesin-like protein KIF1B is a member of the kinesin superfamily of motor proteins and plays a critical role in the intracellular transport of various cargos along microtubules, particularly in neurons and glial cells[1][3][4][5]. It is essential for moving synaptic vesicles and mitochondria within axons, facilitating neuronal function, survival, and axonal outgrowth. KIF1B exists in several isoforms with distinct cargo selectivities; for instance, the beta isoform (KIF1Bβ) is strongly implicated in signaling, such as transporting the insulin-like growth factor 1 receptor (IGF1R), and apoptotic regulation[4]. Mutations in the KIF1B gene cause hereditary neuropathies, notably Charcot-Marie-Tooth disease type 2A, and have been linked to defects in axonal transport, neuronal degeneration, and possibly tumor suppression mechanisms due to their role in apoptosis[1][2][3][4]. The protein's action is powered by ATP hydrolysis in the N-terminal motor domain and involves interactions with membrane phospholipids through a C-terminal PH domain[3]. While KIF1B has not been directly targeted by approved drugs, its genetic status serves as a key diagnostic and research biomarker for certain neuropathies. Therapies modulating KIF1B's activity would face major challenges due to its fundamental role in neuronal cell transport and survival.

Other names

KIF1BKinesin family member 1BKIAA0591KIAA1448KlpKLPHMSNIICharcot-Marie-Tooth neuropathy type IICMT2CMT2ACMT2A1NBLST1kinesin superfamily protein KIF1B

Not applicable (no approved drugs targeting KIF1B); theoretical mechanisms might include modulation of microtubule-based transport or apoptosis if targeted in the future.