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2. What You Should Know Before Taking a L-Theanine ... - AOL

   www.aol.com/know-taking-l-theanine-supplement...

   Tea's combination of caffeine and L-theanine can give you a calm yet alert mental state that could help boost productivity and effectiveness,” Ingram explains, citing a 2021 study on caffeine ...

3. 13 Healthiest Energy Drinks, According to a Dietitian - AOL

   www.aol.com/13-healthiest-energy-drinks...

   These drinks also contain L-theanine, a type of amino acid known to help reduce stress and anxiety, which can help balance out the energizing effects of caffeine. $41.99 at Amazon.

4. The Exact Right Time to Take L-Theanine - AOL

   www.aol.com/exact-time-l-theanine-130000566.html

   L-theanine is an amino acid, a.k.a. a molecule that helps build protein in the body. It’s often talked about as being found in green tea, but it's also present in other herbal brews such as ...

5. Theanine - Wikipedia

   en.wikipedia.org/wiki/Theanine

   The name theanine usually refers to the enantiomer L-theanine, which is the form found in tea leaves from which it is extracted as a powder. [4] [6] The right-handed enantiomer, D-theanine, is less-studied. Theanine is sold as a dietary supplement and is considered to be safe at doses up to 250 milligrams (mg) by the US Food and Drug ...

6. Essential amino acid - Wikipedia

   en.wikipedia.org/wiki/Essential_amino_acid

   Through manipulation of rodent diets, Rose was able to show that ten amino acids are essential for rats: lysine, tryptophan, histidine, phenylalanine, leucine, isoleucine, methionine, valine, and arginine, in addition to threonine. Rose's later work showed that eight amino acids are essential for adult human beings, with histidine also being ...

7. Tryptophan - Wikipedia

   en.wikipedia.org/wiki/Tryptophan

   Tryptophan (symbol Trp or W) [3] is an α-amino acid that is used in the biosynthesis of proteins.Tryptophan contains an α-amino group, an α-carboxylic acid group, and a side chain indole, making it a polar molecule with a non-polar aromatic beta carbon substituent.

8. Aromatic L-amino acid decarboxylase - Wikipedia

   en.wikipedia.org/wiki/Aromatic_L-amino_acid_de...

   Aromatic L-amino acid decarboxylase is active as a homodimer. Before addition of the pyridoxal phosphate cofactor, the apoenzyme exists in an open conformation. Upon cofactor binding, a large structural transformation occurs as the subunits pull closer and close the active site. This conformational change results in the active, closed ...

9. Tryptamine - Wikipedia

   en.wikipedia.org/wiki/Tryptamine

   Tryptamine is an indolamine metabolite of the essential amino acid tryptophan. [9] [10] The chemical structure is defined by an indole—a fused benzene and pyrrole ring, and a 2-aminoethyl group at the second carbon (third aromatic atom, with the first one being the heterocyclic nitrogen). [9]