Nerve growth factor (NGF) receptor, also known as p75NTR, is a low affinity NGF receptor. It binds with equal affinity neurotrophins such as beta NGF, BDNF, NT-3 and NT-4. NGF receptors mediate signaling of neurotrophins for neuronal survival, apoptosis, neurite outgrowth and synaptic plasticity. These receptors are also thought to play a role in neurogenerative diseases such as Alzheimers disease. The NGF receptor is a type I transmembrane glycoprotein (399 aa) consisting of a signal peptide (28 aa), an extracellular domain (222 aa) which contains four cysteine rich domains responsible for ligand binding, a transmembrane domain (22 aa) and a cytoplasmic domain (155 aa).
