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Home > Biochemical Engineering > Amino Acids and Proteins (Find 231 items)

Amino Acids and Proteins

D-Tryptophan

(153-94-6)
An essential amino acid found in naturally produced peptides. Unlike its stereoisomer, L-tryptophan, it is not used in structural or enzyme proteins.It is an important nutrient, used in medicine as a preventive agent for mangy.For biochemical research.

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L-tert-Leucine

(20859-02-3)
L-Tert-Leucine is the basic components of protein, and one of its main physiological functions is as a raw material for protein synthesis. Appear in a free or bound state in the living body. Proteins in the body are broken down to produce the following amino acids: alanine, arginine, aspartic acid, asparagine, cysteine, lysine, methionine, phenylalanine, serine, threonine, chromosome Tyrosine, tyrosine, valine.

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(-)-Phenylglycine

(875-74-1)
D-(-)-2-Phenylglycine is the derivative of glycine (G615990), a non-essential amino acid for human development. Glycine is an inhibitory neurotransmitter in spinal cord, allosteric regulator of NMDA receptors.

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(+)-Pyroglutamic acid

(4042-36-8)
Serves as a building block in the synthesis of diphthamide

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L-Pyroglutamic acid

(98-79-3)
Substance is used in the resolution of racemic amines.

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L-Arginine, monohydrochloride

(1119-34-2)
An essential amino acid for human development. Precursor for nitric oxide. Ammonia detoxicant (hepatic failure); diagnostic aid (pituitary function).Used as pharmaceutical raw materials and food additives. Nutritional supplements.

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L-Theanine

(34271-54-0)
Used as a flavoring agent

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D-Lysine

(923-27-3)
white to light yellow crystal powde

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D-Valine

(640-68-6)
D-Valine is an isomer of the essential amino acid L-Valine. D-Valine has been used as a selective agent in epithelial cells in culture since it inhibits cells that lack the enzyme D-amino acid oxidase. D-Valine has also been shown to inhibit proliferation of contaminating fibroblasts in smooth muscle cells from human myometrium. D-Valine solution showed tumor growth inhibition and improvements of the nutritional status in AH109A hepatoma-bearing rats.

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Protein is the material basis of life. Without protein, there is no life. Every cell and all important components in the body have proteins involved. Amino acid (Aminoacid) is the basic unit that constitutes a protein, giving a specific molecular structure to the protein, so that his molecules have biochemical activity. Proteins are important active molecules in organisms, including enzymes and enzymes that catalyze metabolism. Different amino acids are chemically polymerized into peptides, the original fragments of a protein, which are precursors for protein production. The basic unit of protein is amino acids, which form peptide chains through dehydration and condensation. A protein is a biological macromolecule composed of one or more polypeptide chains. Each polypeptide chain has 20 to hundreds of amino acid residues; various amino acid residues are arranged in a certain order. The organelles that produce proteins are ribosomes.

Frequently Asked Questions

What are the main functions of amino acids and proteins in the human body?

Amino acids and proteins play essential roles in numerous physiological processes. Amino acids serve as the building blocks of proteins, which are crucial for tissue repair, enzyme and hormone production, immune function, and nutrient transport. Additionally, certain amino acids act as neurotransmitters or precursors to bioactive molecules. Understanding these functions is vital for applications in nutrition, pharmaceuticals, and biotechnology.

How are amino acids used in the pharmaceutical and nutraceutical industries?

In the pharmaceutical industry, amino acids are used to formulate intravenous solutions, develop therapeutic agents, and support drug delivery systems. In nutraceuticals, they are key ingredients in dietary supplements aimed at muscle recovery, cognitive health, and metabolic support. High-purity, pharma-grade amino acids must meet strict regulatory standards such as USP, EP, or JP to ensure safety and efficacy.

What is the difference between essential and non-essential amino acids?

Essential amino acids cannot be synthesized by the human body and must be obtained through diet or supplementation—examples include leucine, lysine, and valine. Non-essential amino acids, such as alanine and glutamine, can be produced endogenously. Both types are critical for protein synthesis and metabolic health, but essential amino acids are often prioritized in clinical nutrition and sports supplements due to their dietary dependency.

How are recombinant proteins produced and applied in biotechnology?

Recombinant proteins are produced by inserting target genes into host cells (e.g., E. coli, yeast, or mammalian cells) using genetic engineering techniques. These proteins are widely used in research, diagnostics, and therapeutics—including monoclonal antibodies, vaccines, and enzymes like insulin or growth hormones. Rigorous downstream processing and quality validation are required to ensure functionality, purity, and safety for biomedical applications.

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