FE65: Roles beyond amyloid precursor protein processing.

Area of Science:

• Neuroscience
• Molecular Biology
• Biochemistry

Background:

• FE65 is a brain-enriched adaptor protein identified as an amyloid precursor protein (APP) binding partner.
• It contains WW and phosphotyrosine-binding (PTB) domains, facilitating the assembly of multi-protein complexes.
• Initial studies highlighted FE65's involvement in APP processing and gene transactivation.

Purpose of the Study:

• To explore the diverse biological roles of FE65 beyond its established functions.
• To discuss FE65's involvement in signal transduction, protein turnover, and various neuronal processes.

Main Methods:

• Literature review and synthesis of existing research on FE65.
• Analysis of FE65's interactions and functional domains.
• Discussion of its role in cellular stress and neuronal development.

Main Results:

• FE65 is implicated in signal transduction pathways during cellular stress.
• It plays a role in protein turnover via the ubiquitin-proteasome system.
• Evidence suggests FE65 is crucial for neurogenesis, neuronal migration, neurite outgrowth, synapse formation, and synaptic plasticity.

Conclusions:

• FE65 is a multifunctional protein with significant roles in neuronal processes, including learning and memory.
• Its involvement extends to synaptic plasticity and neurodevelopment.
• FE65's diverse functions highlight its importance in brain function and potential relevance to neurological disorders.