
Thymosin Alpha 1 (Tα1) is a naturally occurring 28-amino acid peptide derived from prothymosin alpha, a precursor protein involved in the development and regulation of the immune system. First isolated from the thymus gland, Thymosin Alpha 1 has been the subject of extensive research into immune modulation, cellular defence mechanisms, and inflammatory response regulation. Due to its broad immunological profile and favourable stability, it is widely studied in both basic and applied peptide science, particularly in relation to immune signalling and systemic resilience.
Thymosin Alpha 1 is most notably studied for its involvement in adaptive immunity, where it appears to support the function and maturation of T-lymphocytes, a key class of white blood cells responsible for coordinating immune responses. Researchers have investigated its potential to:
Enhance T-cell differentiation and proliferation
Support major histocompatibility complex (MHC) class I expression
Promote cytokine balance, particularly in environments requiring regulated immune activation
These properties make Tα1 a peptide of interest in studies focused on immune restoration, host defence, and adaptive immune regulation.
In addition to its role in adaptive immunity, Tα1 is also being explored in the context of innate immune response, the body’s first line of defence. In this context, researchers have looked at how the peptide may influence:
Natural killer (NK) cell activity, which is critical for rapid immune surveillance
Dendritic cell function and antigen presentation, key components of innate immune priming
The production of interferons and other antimicrobial peptides
This dual influence on both branches of the immune system has positioned Thymosin Alpha 1 as a central peptide in studies of immune priming and immunosurveillance.
Thymosin Alpha 1 has also been investigated for its ability to modulate inflammatory cascades. Researchers are interested in its interaction with:
NF-κB pathways, which regulate pro-inflammatory gene expression
Cytokines such as IL-2, IL-6, and TNF-α, all of which play pivotal roles in systemic inflammation
Regulatory checkpoints that balance pro- and anti-inflammatory signalling
This has made Tα1 relevant to research exploring chronic inflammation, immune system overactivation, and homeostatic signalling pathways.
Tα1 has shown a favourable profile in peptide pharmacokinetics, demonstrating:
High biological stability, attributed to its natural origin and sequence
Effective cell membrane penetration, facilitating intracellular signalling
Compatibility with various delivery systems, making it adaptable for a wide range of in vitro and in vivo research applications
These properties support its use in experimental systems where reliable peptide bioactivity and durable signalling are essential.
Beyond immunology, researchers are also examining Tα1 in the context of:
Cellular stress response
Homeostatic regulation across multiple organ systems
Tissue integrity and repair, where immune modulation intersects with regeneration biology
This broad range of activity has made Thymosin Alpha 1 a subject of cross-disciplinary research interest, spanning fields such as molecular biology, biochemistry, and pharmacodynamics.
Thymosin Alpha 1 is a highly versatile peptide with a well-characterised sequence and a broad range of applications in immune modulation, inflammation research, and cellular defence studies. Its dual role in both innate and adaptive immunity, along with its favourable pharmacological properties, makes it a valuable tool in modern peptide science. As research continues, Tα1 remains central to studies exploring immune resilience, cytokine balance, and system-wide cellular regulation.
For research use only. Not approved for human or veterinary applications.
• Synonyms: Tα1, Thymosin-α1, Thymalfasin
• Modified Single-Letter Amino Acid Sequence: SDKPESKETIEQEKQAGESQEAESAEAQG
• IUPAC Condensed Amino Acid Sequence: Ser-Asp-Lys-Pro-Glu-Ser-Lys-Glu-Thr-Ile-Glu-Gln-Glu-Lys-Gln-Ala-Gly-Glu-Ser-Gln-Glu-Ala-Glu-Ser-Ala-Glu-Ala-Gln-Gly
• Molecular Weight: 3108.3 g/mol
• CAS Number: 62304-98-7
• PubChem CID: 16132252
• PubChem URL: PubChem Entry
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Stability: Store lyophilised protein at -20°c. Aliquot the product after reconstitution to avoid repeated freezing/thawing cycles. Reconstituted protein can be stored at 4°c for a limited period of time. The lyophilised protein remains stable until expiry date when stored at -20°c.
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Source:Â Biosynthesis
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Reconstitution: Reconstitute with Bacteriostatic Water
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Usage: Product is prepared for LABORATORY RESEARCH ONLY. Thymosin Alpha 1 for sale at Pure Peptides UK is limited to scientific research and education only – Only buy Thymosin Alpha 1 if you are a licenced researcher.
| Weight | 6 g |
|---|---|
| Cap Colour | Blue |