AG Scientific
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AG Scientific is gespecialiseerd in secundaire metabolieten afkomstig van fermentatie. De meeste van hun producten zijn antibiotica voor genselectie, maar de catalogus bevat ook antimicrobiële, antischimmel, antikanker, antivirale, antiparasitaire en immunosuppressieve reagentia.
Antibiotica:
AG Scientific, Inc. heeft een serie antibiotische screeningsmiddelen ontwikkeld, waaronder Blasticidin S, G-418, Puromycine, Gentamycine, Kanamycine, Ampicilline, Streptomycine en Carbenicilline.
Meer recent werkt AG Scientific samen met farmaceutische klanten die CRISPR-technologie gebruiken.
Antikanker
De catalogus bevat secundaire metabolieten op het gebied van kanker zoals rapamycine, FK-506, cyclosporine A.
Website: www.agscientific.com
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Reducing agent - TCEP
TCEP (tris(2-carboxyethyl)phosphine) is a reducing agent frequently used in biochemical and molecular biology applications. TCEP is often used as a reducing agent to break disulfide bonds within and between proteins as a preparatory step for gel electrophoresis. It is soluble in water and available as a pH-neutral stabilized solution immobilized on an agarose support to facilitate the removal of the reducing agent.
Compared to the other two most commonly used reducing agents dithiothreitol (DTT) and β-mercaptoethanol (BME), TCEP has the advantages of being odorless, a more potent reducing agent, irreversible (in the sense that TCEP does not regenerate - the end product of disulfide cleavage by TCEP is actually two free thiols/cysteines), more hydrophilic and more resistant to oxidation in air.
TCEP is particularly useful for the labeling of cysteine residues with maleimides.
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