peptable

Comparison

PT-141 vs TB-500

Function

While PT-141 is FDA-approved for treatment of hypoactive sexual desire disorder in premenopausal women and is studied for sexual dysfunction in other populations, increasing sexual desire via CNS melanocortin pathways42101, TB-500 is studied for enhancing musculoskeletal and cardiac repair, wound healing, and promoting cell migration and differentiation via actin cytoskeleton remodeling21255.

Mechanism

While PT-141 works as the synthetic melanocortin receptor agonist bremelanotide, an analog of α-MSH that activates central MC3R and MC4R to modulate neuronal circuits governing sexual desire and arousal3242101, TB-500 is a synthetic peptide comprising the LKKTETQ actin-binding motif of thymosin beta-4 that binds G-actin, sequesters actin monomers, and promotes cell migration, angiogenesis, and tissue repair1255.

Length and Sequence

PT-141 is 7 amino acids long, whereas TB-500 is the same length as it has a length of 7 amino acids. PT-141 is made up of a sequence of sequence data not available in the current dataset. TB-500 is made up of a sequence of Lysine, Lysine, Lysine, Threonine, Glutamic acid, Threonine, Glutamine.

Receptor

PT-141

Melanocortin receptors, with highest functional relevance at MC4R and MC3R; also binds MC1R and MC5R3242

TB-500

Binds monomeric actin (G-actin) rather than a classical cell-surface receptor, modulating actin polymerization at barbed and pointed ends55

Organism or Origin

PT-141

Synthetic analog of human α-MSH derived from POMC428190

TB-500

Synthetic derivative of human thymosin beta-4, whose full-length 43-amino-acid protein is abundant in mammalian tissues21279

Gene

PT-141

POMC

TB-500

TMSB4X

Sources

32PT-141 (Bremelanotide): Research Applications and Quality ..., https://wheretofindpeptides.com/research/pt-141-bremelanotide-research-applications-and-quality-assessment-1
42[PDF] The Discovery and Development of Bremelanotide (PT-141), https://www.benchchem.com/pdf/The_Discovery_and_Development_of_Bremelanotide_PT_141_A_Technical_Guide.pdf
81Proopiomelanocortin (POMC), the ACTH/melanocortin precursor, is ..., https://pmc.ncbi.nlm.nih.gov/articles/PMC2253185/
90alpha-Melanocyte stimulating hormone: production and degradation, https://pmc.ncbi.nlm.nih.gov/articles/PMC3936413/
101PT-141 (Bremelanotide Acetate): Clinical Overview, Uses ... - eNavvi, https://enavvi.com/insights/pt-141-bremelanotide-for-sexual-dysfunction-clinical-guide-for-physicians
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