Compound guide
From cellular signaling to what those pathways mean in everyday language.
Overview
NAD+ is a ubiquitous dinucleotide coenzyme central to oxidation-reduction reactions and cellular energy metabolism.
NAD+ is a coenzyme found in every living cell. It carries electrons during energy production and is also consumed by enzymes involved in DNA repair, protein regulation, calcium signaling, and immune metabolism.
Inside the body
These receptors, enzymes, and signaling networks form the primary steps connecting this compound with changes inside cells and tissues.
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.
In plain English
This chemistry is necessary for converting food into usable cellular energy.
The pathway links NAD+ availability to repair and cell survival.
They provide a mechanistic basis for healthy-aging research.
NAD+ sits at the intersection of energy and cellular maintenance. It moves electrons during fuel breakdown, supplies repair enzymes during DNA stress, and supports regulatory proteins that adjust metabolism and gene activity.
Read the evidence
Continue exploring
More compounds organized within the mitochondrial systems 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 explains cellular mechanisms and published outcomes 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.
