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UCN-01 and UCN-02, New Selective Inhibitors of Protein Kinase C. II. Purification, Physico-Chemical Properties, Structural Determination and Biological Activities

UCN-01 and UCN-02, New Selective Inhibitors of Protein Kinase C. II. Purification, Physico-Chemical Properties, Structural Determination and Biological Activities

I Takahashi, Y Saitoh, M Yoshida, H Sano, H Nakano, M Morimoto, T Tamaoki

J Antibiot (Tokyo). 1989 Apr;42(4):571-6.

PMID: 2656615

Abstract:

A new inhibitor of protein kinase C (PKC), UCN-01, was isolated from the culture broth of Streptomyces sp. N-126. We have found that this strain also produces UCN-02 which is a stereoisomer of UCN-01. The inhibitors have the molecular formula C28H26N4O4 and have an indolo[2,3-alpha]carbazole chromophore. Their structures have been elucidated by mass and NMR spectra. UCN-01 has been shown to inhibit PKC and protein kinase A (PKA) with IC50 values of 0.0041 and 0.042 microM, respectively, and UCN-02 has been shown to inhibit PKC and PKA with IC50 values of 0.062 and 0.25 microM, respectively. UCN-01 and UCN-02 also showed the cytotoxic effect on the growth of HeLa S3 cells.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP112953114	UCN-01		112953-11-4	Price

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