TrkC
TrkC is ordinarily activated by binding with NT-3 and has little activation by other ligands. (TrkA and TrkB also bind NT-3, but to a lesser extent.) TrkC is mostly expressed by proprioceptive sensory neurons. The axons of these proprioceptive sensory neurons are much thicker than those of nocireceptive sensory neurons, which express trkA.
Read more about this topic: Trk Receptor, Trk Receptor Types and Corresponding Ligands