Carfilzomib is a second generation proteasome inhibitor that has been used in oncology research.Being a derivative of epoxomicin, carfilzomib has a tetrapeptide epoxyketone structure.

The anti-cancer activity of carfilzomib on proteasomes is attributed to irreversibly binding to a 20S subunit on proteasomes. Affinity of carfilzomib for the subunit has been shown to be fairly significant, allowing carfilzomib to be effective at targeting multiple myeloma and lymphoma.

Proteasomes degrade excess or damaged proteins in both the nucleus and cytosol by cleaving hydrophobic residue peptide bonds. When proteasomes are inhibited by carfilzomib, polyubiquinated proteins accumulate. Polyubiquinated proteins will upregulate p21 synthesis, which activates cell cycle arrest and eventually apoptosis.

Carfilzomib has also been shown to have poor solubility in aqueous solutions, but greater solubility in organic solvents such as DMSO. Aqueous solubility can be enhanced by diluting carfilzomib-organic solvent solution in aqueous buffers. Using aqueous carfilzomib in biological settings should be done in dilute concentrations to limit organic solvent presence. Because carfilzomib organic-aqueous solutions only have a shelf life of approximately 24 hours, it is recommended to make small portions for immediate use.

Product SpecificationsCarfilzomibCFZ

Formula: C₄₀H₅₃N₅O₇

MW: 719.91 g/mol

Storage/Handling: Store at 4°C.Soluble in DMSO.

PubChem Chemical ID: 11556711

IPTG, X-Gal and X-Gluc

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没错！最开始，Gold Biotechnology只生产这三个产品，30年后的今天，Goldbio的产品已经超过3000种，涵盖：

琼脂糖树脂

抗生素

生化试剂

缓冲液

克隆与诱导

培养基添加剂

洗涤剂

DNA蛋白质电泳

酶、抑制剂和底物

生长因子

植物研究

蛋白质表达与纯化

还原剂……

目前Goldbio最核心的产品是：荧光素钾盐，X-gluc， 双丙氨磷，草胺磷 和 X-α-gal