Master Vitamin B9 (Folate) with Picmonic for Medicine

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Vitamin B9 (Folate)

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Vitamin B9 (Folate)

Viking Bee (9) Lives-cat with Foliage
DikeHAfifi
Vitamin B9, or folate, is a vitamin crucial to many biochemical processes. Dietary sources include leafy green vegetables. It is absorbed in the jejunum and stored in the liver. It is metabolized by dihydrofolate reductase into tetrahydrofolate. This molecule plays a crucial role in the proper functioning of methionine synthase. Functions of folate in the body include nucleotide synthesis and endothelial protection.
8 KEY FACTS
CHARACTERISTICS
Dark Green Leafy Vegetables
Dark Green Leafy Vegetables

The body's primary sources of folate include dark green leafy vegetables, wheat germ, egg yolk, liver, fortified breakfast cereal, yeast, beans, and legumes.

Absorbed in Jejenum
Absorbing-sponge Judge-Judy

Folate is mainly absorbed in the duodenum and jejunum. The colon can also absorb folate, however the absorption gradient decreases from the jejunum to the colon.

Hepatic Storage
Liver Storage

The body contains a small reserve pool of folate in the liver and kidneys.

MECHANISM
Dihydrofolate Reductase (DHFR)
Di-hydryl-foliage Red-duck

Dihydrofolate Reductase (DHFR) is the key enzyme for the metabolism of folate. It converts dihydrofolate (DHF) to tetrahydrofolate (THF).

Tetrahydrofolate (THF)
Tetris-hydryl-foliage

Tetrahydrofolate (THF) is the active form of folate needed for various one-carbon transfer reactions in nucleotide synthesis.

Methionine Synthase
Methyl-thimble

Methionine synthase is an important enzyme in the remethylation pathway. It promotes methyl group transfer from methylated folate to homocysteine in order to generate methionine. Methionine is used to synthesize proteins and is a precursor of S-adenosylmethionine (SAM), which is a methyl group donor for more than 100 enzymatic reactions.

FUNCTIONS
Nucleotide Synthesis
Nuclear-toad Synthesized

Folate acts as a coenzyme in many biological processes. It is essential in the synthesis of nucleotides for DNA and RNA and methylation. Nitrogenous bases including adenosine, guanine, and thymine are synthesized with the help of folate.

Endothelial Protection
Protecting Inner-layer

Folate supplementation is thought to improve endothelial function through the production of Nitric Oxide (NO) and reducing oxidative stress.

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