mesoten-exo-peptide The term "met peptide" can refer to several distinct entities within biochemistry and medicine, most commonly peptides containing the amino acid methionine (Met) or peptides involved with the c-Met receptor. Understanding the context is crucial, as these different "met peptides" have varied roles, from endogenous signaling molecules to research tools and therapeutic targets.Methionine (Met) is an amino acid with hydrophobic side chain. AnaSpec offers Fmoc-Met(O)-OH and Fmoc-Met-OH unlabeled standard amino acids.
One prominent example of a "met peptide" is Met-enkephalin.Phe-Met-Arg-Phe Like Peptide acetate, AMS.TP1057L-5-MG This naturally occurring, endogenous opioid peptide plays a significant role in the body's pain management system. Met-enkephalin is synthesized from a larger precursor protein and acts on opioid receptors, similar to how exogenous opioids like morphine function, but with a localized and regulated effect. Its synthesis and biological activity are subjects of ongoing research, with studies exploring feasible routes for its production for biological activity studiesFmoc-Met-OH.
Another significant area where "met peptide" is encountered is in relation to the c-Met receptor.Fmoc-Met-OH – Standard methionine derivative for solid ... The c-Met proto-oncogene protein is a receptor tyrosine kinase that, when activated by its ligand, Hepatocyte Growth Factor (HGF), plays critical roles in cell growth, survival, and migration. Aberrant c-Met expression is implicated in many types of human cancer, making it a target for therapeutic interventions.
Research has focused on designing peptides that interact with c-Met for various applications. This includes developing peptides derived from the Met receptor tail that can bind to the receptor and inhibit its kinase activity(25-310) HGF Alternative Peptide c-Met Agonist 2 µg/Unit. Additionally, peptides are designed based on interactions between c-Met and antibodies, such as Onartuzumab, to create targeted therapies or imaging agents. These c-Met-targeting peptides can be cyclic and may contain non-natural amino acids to enhance stability and efficacy compared to conventional growth factors. Blocking peptides, which bind specifically to antibodies targeting c-Met, are also utilized in research to validate antibody binding sites and block antibody interactions.
The amino acid methionine (Met) itself is a key component in the synthesis of many peptides. It is an amino acid with a hydrophobic side chain, and its incorporation into peptide sequences is a standard procedure in solid-phase peptide synthesis, particularly using Fmoc-based methods. Derivatives like Fmoc-Met-OH serve as the standard reagents for coupling methionine residuesMet-enkephalin. However, methionine residues are susceptible to oxidation, which can be a consideration during peptide synthesis and storageD-{Met-Met} is a polypeptidethat can be found by peptide screening. Peptide screening is a research tool that pools active peptides primarily by immunoassay..
Beyond Met-enkephalin and c-Met-related peptides, other specific peptides incorporate methionine. For instance, N-Formyl-Met-Leu-Phe is an endogenous chemotactic peptide that acts as an agonist for the formyl peptide receptor 1 (FPR1), stimulating cell aggregation. Phe-Met-Arg-Phe-NH2 (FMRF Peptide) and related FMRF-like peptides are also recognized in biological systems. Additionally, dipeptides like Met-Met and D-Met-Met are explored for potential applications, with D-Met-Met showing promise in food supplements due to its oral activity.
In summary, the term "met peptide" encompasses a diverse range of molecules. Whether referring to the endogenous opioid Met-enkephalin, peptides designed to modulate the c-Met receptor's activity in cancer research, or simply peptides containing the amino acid methionine, each type of "met peptide" has unique properties and applications that are vital to understanding various biological processes and developing new therapeutic strategies.
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