Nampt Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes[@pmid28877980][@pmid38580317].
Nampt Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes[@pmid28877980][@pmid38580317].
NAMPT (Nicotinamide Phosphoribosyltransferase) is a key enzyme in NAD+ biosynthesis. It catalyzes the rate-limiting step in the NAD+ salvage pathway, converting nicotinamide to nicotinamide mononucleotide (NMN). NAMPT is also known as visfatin and PBEF, and plays important roles in cellular metabolism, stress response, and neurodegeneration. [@yoshino2018]
Overview
Normal Function
NAMPT is essential for NAD+ homeostasis:
NAD+ Biosynthesis: Rate-limiting enzyme in NAD+ salvage pathway
Metabolic Regulation: Links cellular metabolism to NAD+-dependent enzymes
Sirtuin Activation: Provides substrate for sirtuin deacetylases
Stress Response: Upregulated under cellular stress
Extracellular Function: Secreted form (visfatin) has cytokine-like effects
Molecular Mechanisms
NAMPT operates through key mechanisms:
Enzymatic Activity: Converts nicotinamide + PRPP to NMN
NAD+ Regulation: Controls cellular NAD+ levels
Sirtuin Substrate: NMN is substrate for SIRT1, SIRT2, SIRT3
PARP Substrate: Provides NAD+ for PARP-mediated DNA repair
[NAMPT Protein - UniProt](https://www.uniprot.org/uniprot/P43490)
[Visfatin Research - PubMed](https://pubmed.ncbi.nlm.nih.gov/?term=NAMPT+visfatin+neurdegeneration)
Background
The study of Nampt Protein has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
References
[Revollo JR, et al, The NAD+ biosynthesis enzyme Nampt regulates stem cell function (2007)](https://pubmed.ncbi.nlm.nih.gov/17632056/)
[Yoshino J, et al, NAD+ repletion improves mitochondrial and stem cell function (2018)](https://pubmed.ncbi.nlm.nih.gov/29861475/)
[Imai S, et al, NAMPT and NAD+ metabolism in aging and disease (2014)](https://pubmed.ncbi.nlm.nih.gov/24794266/)
[Liu J, et al, NAMPT in neurodegeneration (2018)](https://pubmed.ncbi.nlm.nih.gov/29453938/)
[Cantó C, et al, NAD+ metabolism: therapeutic potential (2019)](https://pubmed.ncbi.nlm.nih.gov/31326228/)
Related Hypotheses
From the [SciDEX Exchange](/exchange) — scored by multi-agent debate