3 Results for "

contact quenching

" in MedChemExpress (MCE) Product Catalog:
Products (3)

3 Results for "contact quenching" in MCE Product Catalog:

Cat. No.: HY-NP229
DNP-BSA is a multivalent antigen and protein-binding reagent. DNP-BSA binds to subdomain IIA (Site I) of bovine serum albumin via predominantly hydrophobic forces, with spontaneous complex formation via combined dynamic and static quenching. DNP-BSA induces cross-linking of IgE-bound FceRI, triggering tyrosine phosphorylation of FceRI β and γ subunits. DNP-BSA binds to anti-DNP IgE via its DNP groups, forming cross-links between IgE-FceRI complexes, with most DNP groups initially unavailable but transiently exposed for binding. DNP-BSA induces FITC fluorescence quenching in FITC-labeled anti-DNP IgE, proportional to occupied IgE Fab binding sites. DNP-BSA can be used for the research of allergy, inflammation, and contact sensitivity (allergic contact dermatitis) .
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Cat. No.: HY-D3319
BHQ‑3 carboxylic acid is an azo‑containing dark fluorescence quencher. BHQ‑3 carboxylic acid is conjugated to an MMP‑cleavable peptide and paired with a fluorophore to form an activatable probe for MMP activity detection in vitro. BHQ‑3 carboxylic acid shows maximal absorption in the 620 to 730 nm range. BHQ‑3 carboxylic acid–based fluorescent probes can be used in the research of arthritis and tumor‑related pathological processes. .
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Cat. No.: HY-D3416
Synonyms: TAMRA-2,4-dinitroaniline
Target:  

Fluorescent Dye

Research Areas:  

Others

TMR-DN (TAMRA-2,4-dinitroaniline) is a fluorescent probe for RNA imaging that consists of a covalently coupled fluorophore (5-carboxy tetramethylrhodamine (TMR)) and quencher (dinitroaniline (DN)). The Kd value of TMR-DN with SRB-2 is 35 nM, and its Kd value with RhoBAST is approximately 30 nM. TMR-DN has a contact quenching function and forms a non-fluorescent intramolecular ground-state dimer in the free state; the excitation/emission wavelengths of the free probe are Ex/Em = 557/579 nm, those of the complex formed by binding to SRB-2 are Ex/Em = 561/587 nm, and those of the probe bound to the DNB aptamer are Ex/Em = 555/582 nm. TMR-DN reduces non-specific binding to genomic nucleic acids via negatively charged carboxyl-functionalized aromatic rings. Fluorescence dequenching occurs when TMR-DN specifically binds to SRB-2, RhoBAST or the DNB aptamer, among which the binding of RhoBAST requires Mg 2+ for proper folding .
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