maxim-peptide-tadalafil-citrate The term "MCA peptide" encompasses a diverse range of molecules, primarily characterized by their association with the 7-methoxycoumarin-4-acetic acid (MCA) moietyDesign and synthesis of peptide-MCA substrates for a .... This fluorescent tag is a cornerstone in the development of various peptide-based probes and substrates, finding critical applications in biochemical research, diagnostics, and drug discoveryEffects of Mactra chinenesis Peptides on Alcohol-Induced .... While the abbreviation "MCA" can sometimes be used interchangeably with Methyl Cumaryl Amide (AMC), it most commonly refers to the coumarin-based derivative, enabling sensitive detection and quantification in biological assays.
One of the earliest and most notable examples of an MCA peptide is Maurocalcine (MCa). This 33-amino acid residue peptide toxin, initially isolated from the scorpion *Scorpio maurus maurus*, has garnered significant scientific attention due to its remarkable cell penetration propertiesThe SVMP assay uses a quenched fluorogenicpeptidesubstrate (ES010, BioTechne) which is cleaved by SVMPs, resulting in a free unquenched fragment.. Unlike many other toxins, Maurocalcine (MCa) can rapidly translocate into cells and potently activate intracellular targets. This unique characteristic has spurred research into maurocalcine-derived peptides for potential cell delivery applications, especially where peptide size is a critical factor.Caspase‐5 reactivity trends with MCA‐Dab peptides. A) ... Further investigations into the association between MCA expression and cell death induced by various stimuli have also been demonstrated in several *Leishmania* species, highlighting its role in biological processes beyond simple toxicity.
The intrinsic fluorescence of the MCA group makes it an invaluable tool for constructing fluorogenic peptide substrates. These substrates are designed to be cleaved by specific enzymes, such as proteases, releasing the fluorescent MCA moiety. The increase in fluorescence intensity directly correlates with the enzyme's activity, allowing for precise measurement. For instance, Arg-MCA is a recognized substrate for Cathepsin H, while Leu-MCA serves as a substrate for Aminopeptidase. Companies like Peptide Institute, Inc. operate as a global supplier of Arg-MCA and global supplier of Leu-MCA, facilitating their use in research.
The design and synthesis of peptide-MCA substrates have expanded to encompass a wide array of targets. Researchers have prepared various peptide-MCAs related to histone tails and protein substrates like p53 and estrogen receptor-α. These custom-designed probes enable the study of complex enzymatic pathways and protein-protein interactions. For example, Mca-SEVNLDAEFK(Dnp) is a specific fluorogenic peptide substrate designed for Beta-secretase 1 (BACE-1), incorporating the 'Swedish' Lys-Met/Asn-Leu mutation of the amyloid precursor proteinPeptide Institute, Inc. is aglobal supplier of Arg-MCAfrom Japan. Name:Arg-MCA, Code:3113-v, Substrate for Cathepsin H.. Another example is MCA-Pro-Leu-Ala-Cys(Mob)-Trp-Ala-Arg-Dap(DNP)-NH2, a FRET substrate tailored for MMP-11 (Stromelysin-3) and MMP-14 (MT1-MMP).Mca-(ala7, lys(dnp)9)-bradykinin peptide
The development of FRET (Förster Resonance Energy Transfer) pairs is a significant application of MCA. In these constructs, the MCA group often works in conjunction with a quencher, such as 2,4-dinitrophenyl (DNP). Upon enzymatic cleavage, the quencher is separated from the MCA fluorophore, leading to an increase in fluorescence.Mast cell degranulating (MCD) peptideis a cationic 22-amino acid residue peptide, which is a component of the venom of the bumblebee. Mca NovaTag® resin from Novabiochem® is an ideal tool for the synthesis of these FRET peptide substrates. The 7-Methoxycoumarin-4-acetic acid (MCA) itself, with an absorption maximum of 320 nm and emission maximum of 380 nm in methanol, is a key component in developing these FRET pairs with dinitrophenyl (DNP).
Beyond protease activity, MCA-labeled peptides are employed in studying other enzyme families.作者:H Chi·2014·被引用次数:12—In this report we prepared variouspeptide-MCAs(4-methylcoumaryl-7-amides) related to histone tail and protein-substrates such as p53 and estrogen receptor-α. For instance, Caspase-5 reactivity trends with MCA-Dab peptides are investigated using specific substrates to understand caspase activation and function. Furthermore, Mca-KPLGL-Dpa-AR-NH2 Fluorogenic Peptide Substrate is utilized in assays for snake venom metalloproteinases (SVMPs), where cleavage by SVMPs results in a free, unquenched fragment. The peptide Mca-(ala7, lys(dnp)9)-bradykinin is recognized as a sensitive fluorogenic substrate for ECE-1 (endothelin-converting enzyme-1).
The utility of MCA extends to the field of immunology, with the MCA-1D44 antibody being raised against the Coil 2 region of human NF-L, demonstrating efficacy in Western blots across various species, particularly for degenerating neurofilaments.Metacaspase-binding peptide inhibits heat shock-induced ...
In summary, MCA peptides represent a versatile class of molecules crucial for advancing scientific understanding. From the unique cell-penetrating abilities of scorpion-derived Maurocalcine (MCa) to the precise enzymatic activity measurements enabled by fluorogenic peptide substrates, these compounds, often synthesized using custom peptide synthesis services offering peptides of 2–110 amino acids, are indispensable tools in modern biological and chemical research. The ongoing exploration of Mactra chinenesis peptides (MCPs) and their properties further underscores the broad impact and potential of peptide-based research.
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