CD 271 (P75 neurotrophin receptor)

Area of Science:

• Neuroscience
• Molecular Biology
• Cell Biology

Background:

• P75NTR (CD271) is a transmembrane protein in the Tumor Necrosis Factor receptor (TNFR) superfamily.
• While sharing homology with other TNFRs, CD271 possesses a unique intracellular structure and signaling partners.
• CD271 plays a crucial role in the growth, differentiation, and death of the nervous system.

Purpose of the Study:

• To elucidate the role of P75NTR (CD271) in neurotrophin signaling.
• To investigate CD271's interaction with both mature and pro-form neurotrophins.
• To understand the unique signaling capabilities of CD271 within the TNFR family.

Main Methods:

• Characterization of P75NTR (CD271) structure and function.
• Analysis of neurotrophin binding affinities to CD271.
• Investigation of downstream signaling pathways activated by CD271.

Main Results:

• CD271 binds mature neurotrophins including Nerve Growth Factor (NGF), Brain-Derived Growth Factor (BDNF), Neurotrophin 3 (NT3), and Neurotrophin 4/5 (NT4/5).
• Evidence suggests CD271 also functions as a receptor for the pro-forms of these neurotrophins.
• CD271 exhibits unique intracellular signaling compared to other TNFR members.

Conclusions:

• P75NTR (CD271) is a versatile receptor with a significant role in nervous system development and function.
• The dual binding capacity for mature and pro-neurotrophins highlights CD271's complex regulatory role.
• Further research into CD271 signaling may reveal novel therapeutic targets for neurological disorders.