Tyrosine Kinase Receptor B (TrkB) is a high affinity receptor for brain-derived neurotrophic factor (BDNF) and neurotrophin-4/5. It also binds neurotrophin 3 (NT-3) with lower affinity. TrkB does not bind nerve growth factor (NGF). TrkB is involved in the development and/or maintenance of the nervous system and is widely expressed, predominantly in nervous tissue. TrkB is a heavily glycosylated type I transmembrane protein. The TrkB-Fc chimera contains 13 potential N-linked glycosylation sites.
