Sustratos de enzimas

4MU-alpha-L-idopyranosiduronic acid is a fluorogenic substrate for alpha-L-iduronidase. Active alpha-L-iduronidase cleaves the MU moiety from the synthetic substrate, which results in release of a fluorescent signal (Ex 360 nm / Em 455 nm). The reaction is stopped by the addition of sodium carbonate. 4MU-alpha-L-idopyranosiduronic acid is used in alpha-L-iduronidase assays in the context of biochemical characterisation of samples from patients affected by lysosomal storage disease mucopolysaccharidosis I (MPS I).

Please enquire for more information about Resorufin-alpha-D-glucopyranoside including the price, delivery time and more detailed product information at the technical inquiry form on this page

<p>Please enquire for more information about Trimethyl phosphonoacetate including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

L-Leucine-PAB-resorufin is a substrate for enzymes such as β-glucuronidase, α-glucosidase, and β-galactosidase. It is used in the diagnosis of bacterial infections and the detection of certain bacteria in urine and stool samples. L-Leucine-PAB-resorufin can be used to detect the presence of bacteria that produce β-galactosidase and/or β-glucuronidase by releasing resorufin from the substrate. This reaction produces a blue color in the presence of a fluorogenic substrate like fluorescein diacetate or fluorescein isothiocyanate. L-Leucine-PAB-resorufin is also used to detect bacteria that produce α-glucosidase by releasing fluorescamine from the substrate. This reaction produces a green color in the presence of a chrom

Use as a positive control when detecting nitroreductase activity

<p>A substrate for beta-glucuronidase.</p>

<p>Substrate to study the nitroreductase activity in the pathogenic fungus Sporothrix schenckii, a thermal dimorphic pathogenic fungus causing a subcutaneous mycosis.</p>

<p>Chromogenic substrate for alkaline and acid phosphatase</p>

<p>3,3'-Diaminobenzidine (DAB) is an organic compound derived from benzidine. DAB is water-soluble as the tetrahydrochloride salt and is used in immunohistochemical staining of nucleic acids and proteins. Within research in Alzheimer's disease, Aβ protein amyloid plaques are targeted by a primary antibody, and subsequently by a secondary antibody, which is conjugated with a peroxidase enzyme. This will bind DAB as a substrate and oxidize it, producing an easily observable brown colour. 3,3’-Diaminobenzidine tetrahydrochloride hydrate is also available as the tetrahydrochloride salt and as the free base.</p>

6'-(Diethylamino)spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3'-yl b-D-galactopyranoside is a chemiluminescent substrate for the detection of ATP. It reacts with the luciferase enzyme to produce light, which can be detected by a luminometer. 6'-(Diethylamino)spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3'-yl b-D-galactopyranoside is used in a variety of applications, including diagnostics, food testing, and environmental monitoring.

4-Methylumbelliferyl 2-acetamido-3-O-(beta-D-galactopyranosyl)-alpha-D-galactopyranoside is a fluorogenic substrate for alpha-N-acetylgalactosaminidase. After enzymatic cleaveage, free 4-methylumbelliferone (also known as hymecromone) is released, exhibiting blue fluorescence upon excitation with UV light. The strongest fluorescence of 4-methylumbelliferone requires deprotonation of the hydroxyl group (thus requires alkaline pH), with a maximal fluorescence intensity obtained with excitation at 350 to 370 nm and emission at 440 to 470 nm. The use of 4-methylumbelliferyl 2-acetamido-3-O-(beta-D-galactopyranosyl)-alpha-D-galactopyranosideas a substrate for measuring the alpha-N-acetylgalactosaminidase activity is used for Fabry disease diagnosis and Schindler disease screening.

<p>4-Fluoro-2-nitrophenyl beta-D-galactopyranoside, a fluorinated analog of ONPG, is a chromogenic enzyme substrate specifically used to detect beta-galactosidase in bacterial media. 4-Fluoro-2-nitrophenyl beta-D-galactopyranoside is used in Lactose intolerance screening, bacterial beta-galactosidase detection (E. coli)</p>

<p>5-Bromo-4-chloro-3-indolyl N-acetyl-a-D-neuraminic acid ammonium salt is a substrate used to detect and quantify sialidase activity. Sialidases are enzymes that cleave sialic acid residues from glycoconjugates, and their activity is important in various cellular processes. The substrate is commonly used in research aimed at understanding the role of sialidases in diseases such as influenza and cancer.</p>

<p>Chromogenic substrate for beta-galactosidase</p>

<p>Monohydrate; beta-glucuronidase substrate; yellow/pink color<br>Beta-glucuronidase activity can be measured in a colorimetric assay with phenolphthalein beta-D-glucuronide as substrate. Starting assay conditions can include 30 µg of enzyme-containing material, 0.6 mM phenolphthalein beta-D-glucuronide in 100 mM sodium phosphate buffer in a total volume of 100 µL and monitoring absorbance changes at 540 nm. Temperature incubation can be used to promote the enzymatic activity (Galindo, 2012).</p>

<p>4-Methylumbelliferyl pyrophosphate diester disodium salt is a fluorogenic substrate for pyrophosphatases or diphosphatases. After enzymatic cleaveage, free 4-methylumbelliferone (also known as hymecromone) is released, exhibiting blue fluorescence upon excitation with UV light. The strongest fluorescence of 4-methylumbelliferone requires deprotonation of the hydroxyl group (thus requires alkaline pH), with a maximal fluorescence intensity obtained with excitation at 350 to 370 nm and emission at 440 to 470 nm. The use of 4-methylumbelliferyl pyrophosphate diester disodium saltas a substrate for measuring the pyrophosphatases or diphosphatases activity is used for monitoring and diagnosis of pyrophosphatase deficiency and bone metabolism disorder.</p>

<p>Aldol® 470 nonanoate is a chemiluminescent substrate that can be used as a ligand for the detection of C8/C9-esterases, lipases activity, to result in an orange/green color. Aldol® 470 nonanoate has been shown to be active with horseradish peroxidase in a number of different assay systems. The purity and quality of Aldol® 470 nonanoate has been tested with culture media, environmental testing, bioluminescence, staining, fluorogenic substrate, chromogenic substrate, enzyme substrate, food testing and conjugates.</p>

<p>A fluorogenic MOSCERDAM® substrate targeting cellulases</p>

<p>6,8-Difluoro-4-methylumbelliferyl 2-acetamido-3-O-(b-D-galactopyranosyl)-a-D-galactopyranoside is a chemiluminescent substrate that reacts with oxygen in the presence of luciferase to produce light. This product is an excellent replacement for luminol, especially in applications where aqueous solvents are not suitable. 6,8-Difluoro-4-methylumbelliferyl 2-acetamido-3-O-(b-D-galactopyranosyl)-a-D-galactopyranoside has been extensively tested and shown to be nonhazardous in a variety of different culture media. It is also nonhazardous to the environment, as it can be easily degraded by microorganisms.</p>

<p>Aldol® 470 beta-D-galactopyranoside is a chromogenic and fluorogenic enzyme substrate used for detection of beta-galactosidase activity. The colorless enzyme substrate is cleaved by lactose-utilizing bacteria grown in liquid or solid media, yielding yellow coloration and green fluorescence. Aldol® 470 beta-D-galactopyranoside can also be used in beta-galactosidase gene reporter assays or immunoassay applications (ELISA). Aldol® 470 beta-D-galactopyranoside can be used under aerobic and anaerobic conditions.</p>