THE PURSER WELLNESS ENCYCLOPEDIA

Let’s explore “Apolipoprotein B — lab reference”

A RELATED COURSEMethylation & B vitamins

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Gene referenceSep 23, 2026

MTHFD1

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MTHFD1 helps move folate between forms used for different jobs in the body. Also called: Methylenetetrahydrofolate Dehydrogenase 1 Folate has several working forms Dr. Purser includes MTHFD1 among genes involved in folate interconversion. T…

Gene referenceSep 23, 2026

MTHFD1L

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…tetrahydrofolate Dehydrogenase 1-Like A mitochondrial contribution to one-carbon metabolism The homocysteine chapters include MTHFD1L in the wider folate-related genetic map. MTHFD1L concerns mitochondrial one-carbon metabolism; it is disti…

Gene referenceSep 23, 2026

MTHFR

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…ase, C677T, A1298C, folate, homocysteine Follow the pathway beyond MTHFR Dr. Purser teaches MTHFR within a larger folate and homocysteine pathway. MTHFR contributes to production of the folate form used in remethylation; MTR and MTRR connec…

Gene referenceSep 23, 2026

MTR

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Makes the methionine synthase enzyme, which uses vitamin B12 in the conversion of homocysteine to methionine. Also called: Methionine Synthase The B12-dependent step In Dr. Purser’s teaching map, MTR is the B12-dependent step that converts …

Gene referenceSep 23, 2026

NAT2

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…, which helps process certain drugs and other compounds. Combinations of variants can influence acetylation status; one SNP usually does not tell the entire story. Also called: N-Acetyltransferase 2 Acetylation and medication handling NAT2 …

Gene referenceSep 23, 2026

NOS3

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NOS3 encodes endothelial nitric oxide synthase, which helps blood vessels generate nitric oxide, a signal involved in vascular relaxation. This pathway is distinct from a blood pressure measurement or a diagnosis of vascular disease. Also c…

Gene referenceSep 23, 2026

NQO1

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…1. Learn what a specific result could mean and what to ask about it. Also called: NAD(P)H Quinone Oxidoreductase 1 Quinone handling within the redox network Dr. Purser includes NQO1 in the wider redox discussion rather than limiting antioxi…

Gene referenceSep 23, 2026

NR3C1

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…answer different questions. Also called: Nuclear Receptor Subfamily 3 Group C Member 1 / Glucocorticoid Receptor Receiving the glucocorticoid signal NR3C1 encodes the glucocorticoid receptor, which helps tissues respond to cortisol and gluc…

Gene referenceSep 23, 2026

NR3C2

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…mones such as aldosterone and helps regulate salt and fluid balance. It is distinct from the NR3C1 glucocorticoid receptor. Also called: Mineralocorticoid Receptor / Nuclear Receptor Subfamily 3 Group C Member 2 Mineralocorticoid signaling …

Gene referenceSep 23, 2026

NTRK2

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NTRK2 encodes TrkB, a receptor involved in responding to neurotrophic signals such as BDNF. These signals support nervous-system function and plasticity. NTRK2 is not a phosphatidylserine absorption transporter. Also called: Neurotrophic Re…

Gene referenceSep 23, 2026

PEMT

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…ed in producing phosphatidylcholine, a component of cell membranes. Genetic findings alone do not establish a choline deficiency. Also called: Phosphatidylethanolamine N-Methyltransferase, choline, phosphatidylcholine The membrane, liver an…

Gene referenceSep 23, 2026

PON1

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PON1 is discussed in relation to how the body handles some compounds and protects certain fats. Also called: Paraoxonase 1 A different part of antioxidant handling PON1 appears in Dr. Purser’s redox and conversion teaching alongside GST and…

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