Vitamin B9 (Folate)
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Vitamins
- Vitamin B1 (Thiamine) Biochemistry
- Vitamin B1 (Thiamine) Deficiency
- Vitamin B2 (Riboflavin)
- Vitamin B3 (Niacin) Biochemistry
- Vitamin B3 (Niacin) Deficiency and Excess
- Hartnup Disease
- Vitamin B5 (Pantothenic Acid)
- Vitamin B6 (Pyridoxine)
- Vitamin B7 (Biotin)
- Vitamin B9 (Folate)
- Vitamin B12 (Cobalamin) Biochemistry
- Vitamins B9 and B12 Deficiencies
- Vitamin A (Retinol) Biochemistry
- Vitamin A (Retinol) Deficiency and Excess
- Vitamin C (Ascorbic Acid) Biochemistry
- Vitamin C (Ascorbic Acid) Deficiency and Excess
- Vitamin D Biochemistry
- Vitamin D Deficiency and Excess
- Vitamin E (Tocopherol/Tocotrienol)
- Vitamin K Biochemistry
- Vitamin K Deficiency
- Zinc
- Kwashiorkor and Marasmus
Summary
Vitamin B9 (Folate) is a water-soluble vitamin that plays a key role as a component of THF (tetrahydrofolate). THF serves a key role in methylation reactions, such as those required for DNA and RNA synthesis. Folate is present in leafy green vegetables, and it is absorbed in the jejunum of the small intestine.
Key Points
- Folate (Vitamin B9)
- Converted to tetrahydrofolic acid (THF), a coenzyme for 1-carbon transfer/methylation reactions
- key role in nucleotide synthesis, especially thymine (see Purine Synthesis and Pyrimidine Synthesis)
- Found in leafy green vegetables (“folate from foliage”)
- Absorbed in the jejunum
- Converted to tetrahydrofolic acid (THF), a coenzyme for 1-carbon transfer/methylation reactions
Find Folate Biochemistry and other Vitamins among Pixorize's visual mnemonics for the USMLE Step 1 and NBME shelf exams.