Comparison

Thymosin Alpha-1 vs Thymosin Beta-4

Function

While Thymosin Alpha-1 is clinically used in some countries as an immunomodulator for chronic hepatitis B/C and as an adjuvant in cancer therapy, enhancing cell-mediated immunity41487, Thymosin Beta-4 promotes wound healing, angiogenesis, and tissue regeneration in preclinical models via effects on cytoskeleton dynamics, cell migration, and anti-apoptotic pathways25579.

Mechanism

While Thymosin Alpha-1 works as a 28-amino-acid thymic peptide fragment of prothymosin alpha that activates dendritic cells and T cells primarily via TLR9/MyD88/NF-κB signaling, enhancing Th1 responses and NK-cell cytotoxicity414, Thymosin Beta-4 is an endogenous 43-amino-acid actin-sequestering peptide that maintains a pool of G-actin monomers and regulates actin polymerization, thereby influencing cell migration, proliferation, and differentiation25579.

Length and Sequence

Thymosin Alpha-1 is 28 amino acids long, whereas Thymosin Beta-4 is longer as it has a length of 43 amino acids. Thymosin Alpha-1 is made up of a sequence of Serine, Aspartic acid, Alanine, Alanine, Valine, Aspartic acid, Threonine, Serine, Serine, Glutamic acid, Isoleucine, Threonine, Threonine, Lysine, Aspartic acid, Leucine, Lysine, Glutamic acid, Lysine, Lysine, Glutamic acid, Valine, Valine, Glutamic acid, Glutamic acid, Alanine, Glutamic acid, Asparagine. Thymosin Beta-4 is made up of a sequence of Serine, Aspartic acid, Lysine, Proline, Aspartic acid, Methionine, Alanine, Glutamic acid, Isoleucine, Glutamic acid, Lysine, Phenylalanine, Aspartic acid, Lysine, Serine, Lysine, Lysine, Proline, Aspartic acid, Methionine, Alanine, Glutamic acid, Glutamic acid, Lysine, Phenylalanine, Aspartic acid, Lysine, Lysine, Glutamic acid, Lysine, Lysine, Glutamic acid, Glutamic acid, Alanine, Glutamic acid, Asparagine, Glutamic acid, Glutamic acid, Lysine, Glutamic acid, Serine.

Receptor

Thymosin Alpha-1

Toll-like receptors, predominantly TLR9 (and also TLR2/TLR3) on plasmacytoid dendritic cells and other immune cells4

Thymosin Beta-4

Binds actin monomers (G-actin) at both barbed and pointed ends to sterically block polymerization55

Organism or Origin

Thymosin Alpha-1

Endogenous fragment of human prothymosin alpha produced in the thymus1487

Thymosin Beta-4

Human and other mammals (ubiquitous cytosolic peptide) 7988

Gene

Thymosin Alpha-1

PTMA

Thymosin Beta-4

TMSB4X

Sources

4Thymosin Alpha-1: Thymic Immunomodulatory Peptide and ..., https://peptpedia.org/research/thymosin-alpha1-t-cell-immunomodulation
14Thymosin Alpha 1 - CPC Scientific, https://cpcscientific.com/products/catalog-peptides/THYM-004/
87PTMA protein | Thymosin alpha 1 Protein-NP_001092755.1, https://www.mybiosource.com/ptma-protein/thymosin-alpha-1/846997
2TB-500 (Thymosin Beta-4) | Peptide Biologix, https://peptidebiologix.com/tb-500
12Thymosin Beta-4 vs TB-500 | What to Know in 2024, https://www.peptidesciences.com/peptide-research/thymosin-beta-4-vs-tb-500
79TMSB4X Gene: Function, Research, and Clinical Applications, https://learn.mapmygenome.in/genemap/tmsb4x
88TMSB4X thymosin beta 4, X-linked FX PTMB4 TB4X TMSB4, https://www.sigmaaldrich.com/DE/en/genes/tmsb4x