THE PURSER WELLNESS LIBRARY

Let’s explore 1,25-dihydroxyvitamin D — lab reference

A COURSE FOR YOUR CURIOSITYGetting to know your micronutrients

5 chapters, at your pace

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555 discoveries for your curiosity21 matching listings grouped; alternative sources stay available.

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Gene referenceSep 23, 2026

FADS1

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Encodes an enzyme involved in fatty-acid metabolism. Also called: Fatty Acid Desaturase 1 / D5D The form of a fatty acid matters Dr. Purser teaches FADS genes as a conversion pathway. FADS1 participates in a delta-5 desaturase step in fatty…

Gene referenceSep 23, 2026

FOLH1

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Dr. Also called: Folate Hydrolase 1 Folate handling begins before remethylation Dr. Purser’s genetic chapters include FOLH1 in folate handling. The earlier genetics reference explains its role in breaking down polyglutamated food folates in…

Gene referenceSep 23, 2026

FOLR1

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FOLR1 encodes folate receptor alpha, which helps cells take up folate and has an important role in folate transport at the brain’s barriers. Blood folate and folate availability in the nervous system are not identical measurements. Also cal…

Gene referenceSep 23, 2026

GAD1

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Dr. Also called: Glutamate Decarboxylase 1 The glutamate-to-GABA connection Dr. Purser’s course uses GAD/GABA teaching to explain a connection between excitatory and inhibitory signaling. GAD1 encodes an enzyme involved in producing GABA fr…

Gene referenceSep 23, 2026

GPX1

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Dr. Also called: Glutathione Peroxidase 1 Glutathione has enzyme partners Dr. Purser teaches the glutathione peroxidase family alongside selenium and antioxidant support. GPX1 helps illustrate cellular peroxide handling. These enzymes use g…

Gene referenceSep 23, 2026

GSTM1

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The practitioner course places GSTM1 in the glutathione transferase family. Also called: Glutathione S-Transferase Mu 1 Using glutathione in conjugation The practitioner course places GSTM1 in the glutathione transferase family. These enzym…

Gene referenceSep 23, 2026

GSTO1

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GSTO1 belongs to the omega family of glutathione S-transferases. These enzymes participate in redox chemistry, with roles that differ from the better-known GSTM1 and GSTP1 pathways. Also called: Glutathione S-Transferase Omega 1 An omega-fa…

Gene referenceSep 23, 2026

GSTP1

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The practitioner course places GSTP1 in the glutathione transferase family. Also called: Glutathione S-Transferase Pi 1 Using glutathione in conjugation The practitioner course places GSTP1 in the glutathione transferase family. These enzym…

Gene referenceSep 23, 2026

GSTT1

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The practitioner course places GSTT1 in the glutathione transferase family. Also called: Glutathione S-Transferase Theta 1, GSTT Using glutathione in conjugation The practitioner course places GSTT1 in the glutathione transferase family. Th…

Gene referenceSep 23, 2026

MTHFD1

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Dr. Also called: Methylenetetrahydrofolate Dehydrogenase 1 Folate has several working forms Dr. Purser includes MTHFD1 among genes involved in folate interconversion. The lesson is that folate participates in several reactions and exists in…

Gene referenceSep 23, 2026

MTHFD1L

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The homocysteine chapters include MTHFD1L in the wider folate-related genetic map. Also called: Methylenetetrahydrofolate Dehydrogenase 1-Like A mitochondrial contribution to one-carbon metabolism The homocysteine chapters include MTHFD1L i…

Gene referenceSep 23, 2026

NR3C1

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NR3C1 encodes the glucocorticoid receptor, which helps tissues respond to cortisol and glucocorticoid medicines. Receptor genetics and measured cortisol levels answer different questions. Also called: Nuclear Receptor Subfamily 3 Group C Me…

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