Neuronal Protein Transport Mechanism Discovered

Researchers led by Professor Nobutaka Hirokawa at Juntendo University, along with Dr. Yanrong Jiang, Dr. Sotaro Ichinose from Gunma University, and Dr. Tadayuki Ogawa from Medical University of Warsaw, discovered a previously unrecognized mechanism regulating cargo-specific transport in neurons. They found that kinesin-2 motor proteins form multiple molecular subtypes, with a specific KIF3B/B/KAP3 complex preferentially transporting TRIM46 to the axon initial segment (AIS). This discovery, published in the Journal of Cell Biology, provides crucial insights into neuronal architecture and development, with implications for understanding and treating neurological and neurodevelopmental disorders. The findings could inspire future applications in biotechnology and nanotechnology.