Molecular Weight
Definition
Molecular weight (MW), also called molecular mass, is the sum of the atomic weights of all atoms in a molecule, expressed in Daltons (Da) or grams per mole (g/mol). For peptides, molecular weight is determined by the amino acid sequence and any post-translational modifications. It is a key identifier used in quality control — mass spectrometry confirms that a synthesized peptide matches its expected molecular weight. Peptides are generally defined as chains under 50 amino acids (roughly under 5,500 Da).
Related Terms
Related Compounds
BPC-157
An in-depth review of Body Protection Compound-157, covering its mechanism of action, research applications in tissue repair, gut health, and neuroprotection, along with key published studies.
Read monographTB-500
A comprehensive review of TB-500, a synthetic fragment of Thymosin Beta-4, examining its role in wound healing, tissue regeneration, and inflammation research.
Read monographRelated Studies
Thymosin beta 4 is an endogenous iron chelator and molecular switch of ferroptosis
Lachowicz JI, Pichiri G, Piludu M, et al. · Pharmacological Research (2022)
Stable gastric pentadecapeptide BPC 157 can improve the healing course of spinal cord injury and leads to functional recovery in rats
Perovic D, Kolenc D, Bilic V, et al. · Journal of Orthopaedic Surgery and Research (2019)
Brain-gut Axis and Pentadecapeptide BPC 157: Theoretical and Practical Implications
Sikiric P, Rucman R, Turkovic B, et al. · Current Neuropharmacology (2017)
Pentadecapeptide BPC 157 enhances the growth hormone receptor expression in tendon fibroblasts
Chang CH, Tsai WC, Lin MS, et al. · Molecules (2014)