Compound guide
A pathway-focused guide to molecular mechanisms, published evidence, and the limits of interpretation.
Overview
NAD+ is a ubiquitous dinucleotide coenzyme central to oxidation-reduction reactions and cellular energy metabolism.
Beyond carrying electrons, NAD+ is consumed by enzymes involved in DNA repair, signaling, transcriptional regulation, and protein modification.
NAD+ biology is foundational, while the effects of changing NAD+ levels depend on tissue, route, precursor, and study design. General cellular importance does not prove a benefit from a particular product.
Research model
These receptors, enzymes, and signaling networks define the primary laboratory questions associated with this research material.
NAD+ accepts electrons during glycolysis, the citric-acid cycle, and other reactions to become NADH. NADH then carries those electrons toward the mitochondrial respiratory chain, where they help support ATP production.
Poly-ADP-ribose polymerases consume NAD+ to build signaling chains at sites of DNA damage. Heavy PARP activity can draw down cellular NAD+ during severe stress.
Sirtuins use NAD+ during protein deacylation, while CD38 and related enzymes consume it in calcium and immune signaling. These pathways influence gene regulation, metabolism, inflammation, and stress responses.
Research interpretation
NAD+ accepts electrons during glycolysis, the citric-acid cycle, and other reactions to become NADH.
Poly-ADP-ribose polymerases consume NAD+ to build signaling chains at sites of DNA damage.
Sirtuins use NAD+ during protein deacylation, while CD38 and related enzymes consume it in calcium and immune signaling.
NAD+ biology is foundational, while the effects of changing NAD+ levels depend on tissue, route, precursor, and study design. General cellular importance does not prove a benefit from a particular product.
Read the evidence
Continue exploring
More compounds organized within the mitochondrial systems research area.
MOTS-c is a 16-amino-acid peptide encoded within mitochondrial DNA and studied as a signal between mitochondrial stress and wider cellular metabolism.
Open compound guide ↗
SS-31, also called elamipretide, is a short mitochondria-targeting tetrapeptide studied for its interaction with cardiolipin in the inner mitochondrial membrane.
Open compound guide ↗
Glutathione is an endogenous tripeptide and one of the cell's major redox buffers.
Open compound guide ↗One important note
NAD+ biology is foundational, but changing NAD+ levels depends on tissue, route, precursor, and study design. Direct human NAD+ intervention research remains early and limited in size and scope.
This guide summarizes molecular mechanisms, published evidence, and evidence limits in everyday language. It is educational information, not medical advice or instructions for personal use. Products offered on this site are intended exclusively for laboratory research and are not for human or veterinary use.
