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Amino Acid

Published: Jul 17, 2023
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Updated: Sep 2, 2023
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Written by Oseh Mathias

Founder, SpeechFit

Amino acids are organic compounds that serve as the building blocks of proteins [1]. They are composed of an amino group (-NH2), a carboxyl group (-COOH), and a side chain specific to each amino acid [2]. There are 20 commonly occurring amino acids that are essential for life on Earth [3].

The evolution of amino acids is thought to have occurred billions of years ago when simple organic molecules reacted under early Earth's conditions, leading to the formation of amino acids [4]. These amino acids then played a crucial role in the development of more complex organic compounds and eventually the emergence of life [5].

Amino acids play a significant role in the synthesis of neurotransmitters, which are chemical messengers that facilitate communication between nerve cells in the nervous system [6]. Several amino acids serve as precursors for neurotransmitter synthesis [7].

Amino AcidRole in Neurotransmitter Synthesis
GlutamateGlutamate serves as a precursor for glutamate, the primary excitatory neurotransmitter in the central nervous system [8].
GABAGABA synthesized from glutamate and acts as the primary inhibitory neurotransmitter, regulating neuronal excitability [9].
GlycineGlycine acts as an inhibitory neurotransmitter primarily in the spinal cord and brainstem, regulating nerve signal transmission [10].
SerineSerine involved in the synthesis of neurotransmitters such as dopamine, norepinephrine, and epinephrine, regulating mood and other functions [11].
TryptophanTryptophan serves as a precursor for serotonin, a neurotransmitter involved in mood regulation, sleep-wake cycles, and appetite control [12].
TyrosineTyrosine used in the synthesis of neurotransmitters like dopamine, norepinephrine, and epinephrine, playing roles in motivation, attention, and stress responses [13].

These are just a few examples of amino acids and their roles in neurotransmitter synthesis. Amino acids, through their involvement in neurotransmitter production, are vital for proper functioning of the nervous system and play a fundamental role in various neurological processes.


Author

Oseh Mathias

SpeechFit Founder

Oseh is a software engineer, entrepreneur and founder of SpeechFit. Oseh is passionate about improving health and wellbeing outcomes for neurodiverse people and healthcare providers alike.


References
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  • Richard, D. M., Dawes, M. A., Mathias, C. W., Acheson, A., Hill-Kapturczak, N., & Dougherty, D. M. (2009). L-Tryptophan: Basic Metabolic Functions, Behavioral Research and Therapeutic Indications. International journal of tryptophan research: IJTR, 2, 45–60.

  • Fernstrom, J. D., & Fernstrom, M. H. (2007). Tyrosine, phenylalanine, and catecholamine synthesis and function in the brain. The Journal of nutrition, 137(6), 1539S-1547S.