Enzyme Labeling

L-Leucine-7-amido-4-methylcoumarin (Leu-AMC) hydrochloride is a bright blue fluorogenic peptidyl substrate for LAP3 (leucine aminopeptidase). L-Leucine-7-amido-4-methylcoumarin hydrochloride can be used for leucine aminopeptidase inhibition assays in vitro.

4-Methylumbelliferyl-2-acetamido-2-deoxy-β-D-Glucopyranoside is a fluorogenic substrate for N-acetyl-β-D-glucosaminidase.

MeOSuc-Ala-Ala-Pro-Val-pNA is a sensitive chromogenic substrate for human leukocyte and porcine pancreatic elastase.

β-Ala-Lys (AMCA) is a fluorescently labeled substrate of oligopeptide transporters. β-Ala-Lys (AMCA) acts as a substrate for a variety of bacterial proton-coupled oligopeptide transporters, and is used to label the activity of oligopeptide transporters. Excitation/emission wavelength: 340 nM/460 nM.

4-Nitrocatechol sulfate potassium salt (Dipotassium nitrocatechol sulfate) is an aromatic sulfate that can serve as a chromogenic substrate for sulfatase. 4-Nitrocatechol sulfate potassium salt can be used to determine the activities of glycosaminoglycan (GAG) degrading enzymes aryl sulfatase B and exonucleosidase.

4-Methylumbelliferyl oleate is a fluorogenic substrate for acid and alkaline lipases. 4-Methylumbelliferyl oleate is cleaved by lipases, liberating 4-Methylumbelliferyl (Ex/Em=320/450 nm).

Ac-YVAD-AFC is the the fluorometric peptide substrate of caspase-1, with λ excitation of 400 nm and λ emission of 505 nm.

8pyDTZ is a pyridyl diphenylterazine (DTZ) analog and an ATP-independent pyridyl substrate of LumiLuc luciferase. 8pyDTZ exhibits spectrally shifted emission. 8pyDTZ has excellent biocompatibility and superior in vivo sensitivity. 8pyDTZ can be used for in vivo luminescence imaging.

BCIP(BCIP p-toluidine salt; X-phosphate p-toluidine salt) is an artificial chromogenic substrate used for the sensitive colorimetric detection of alkaline phosphatase activity.

C6 NBD Glucosylceramide is a glucosylceramide fluorescent derivative (Ex=466 nm, Em=535 nm). C6 NBD Glucosylceramide can be used to study the metabolism and internalization of glucosylceramide and also for the determination of glucosyl ceramide synthase activity.

D-Ala-Lys-AMCA hydrochloride is a known proton-coupled oligopeptide transporter 1 (PEPT1) substrate that emits blue fluorescence. D-Ala-Lys-AMCA hydrochloride may be transported into liver cancer cells and Caco-2 cells based on fluorescence analysis. D-Ala-Lys-AMCA hydrochloride can be used for characterizing PEPT1-specific substrates or inhibitors (Ex/Em = 390/480 nm).

Luciferase, firefly is the light-emitting enzyme responsible for the bioluminescence of fireflies and click beetles. Luciferase, firefly catalytic substrate is D-luciferin (HY-12591B).

Mu-6S-Palm-β-Glc is a fluorogenic substrate for palmitoyl-protein thioesterase (PPT). Mu-6S-Palm-β-Glc can be used for the research of neuronal ceroid lipofuscin disease in infants.

EDANS (1,5-EDANS) is a novel and quenched fluorogenic substrate for assaying retroviral protease by resonance energy transfer (RET).

Mca-Ala-Pro-Lys(Dnp)-OH, a specific ACE2 quenched fluorogenic substrate, can be used to detect ACE2 activity, such as urinary, heart and lung.

Oxazine 170 perchlorate is a laser dye with a wide excitation spectrum range (300−550 nm), which strongly absorbs light with a wavelength greater than 550 nm, and it emits fluorescence with a wavelength of about 645 nm.

Resorufin butyrate is a fluorogenic substrate for triglyceride lipases and cholinesterase (Ex=570 nm, Em=580 nm).

QTZ is a bioluminescence agent for in vivo imaging. QTZ has red-shifted emission and yields very little background. QTZ is a coelenterazine analog with the 4-quinolinyl substitution at the C8 position of the imidazopyrazinone core.

5 (6)-Carboxy-2',7'-dichlorofluorescein is a fluorescent probe substrate that acts on MRP1 and MRP3/Mrp3, passively diffuses across cell membranes, and is actively effluxed by MRP1 in MRP1-positive cells. 5 (6)-Carboxy-2',7'-dichlorofluorescein is transported across membranes in an ATP-dependent manner, but does not stimulate ATPase activity.

3-BTD (3-Benzothiazole-daphnetin) is a Catechol-O-methyltransferase (COMT) two-photon fluorescence probe. 3-BTD can also be used for biological imaging of endogenous COMT in living cells and tissue sections.