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Identification of the Bacterial Maytansinoid Gene Cluster Provides Insights into the Post-PKS Modifications of Ansacarbamitocin Biosynthesis.

08:00 EDT 12th July 2019 | BioPortfolio

Summary of "Identification of the Bacterial Maytansinoid Gene Cluster Provides Insights into the Post-PKS Modifications of Ansacarbamitocin Biosynthesis."

A new biosynthetic gene cluster for the bacterial maytansinoids, ansacarbamitocins (ASCs), was identified in DSM 44262. The post-PKS modifications of ASCs were elucidated on the basis of bioinformatics analysis. Specific gene disruption and heterologous expression led to the isolation of seven new bacterial maytansinoids. The 3'--methyltransferase and 3--carbamyltransferase involved in bacterial maytansinoid biosynthesis were identified for the first time. The new bacterial maytansinoids and showed strong antitumor activities against four human cancer cell lines.

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Name: Organic letters
ISSN: 1523-7052
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Medical and Biotech [MESH] Definitions

Members of the beta-globin family. In humans, they are encoded in a gene cluster on CHROMOSOME 11. They include epsilon-globin, gamma-globin, delta-globin and beta-globin. There is also a pseudogene of beta (theta-beta) in the gene cluster. Adult HEMOGLOBIN is comprised of two ALPHA-GLOBIN chains and two beta-globin chains.

Members of the alpha-globin family. In humans, they are encoded in a gene cluster on CHROMOSOME 16. They include zeta-globin and alpha-globin. There are also pseudogenes of zeta (theta-zeta) and alpha (theta-alpha) in the cluster. Adult HEMOGLOBIN is comprised of 2 alpha-globin chains and 2 beta-globin chains.

Any of the processes by which cytoplasmic or intercellular factors influence the differential control of gene action in bacteria.

The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES.

The number of copies of a given gene present in the cell of an organism. An increase in gene dosage (by GENE DUPLICATION for example) can result in higher levels of gene product formation. GENE DOSAGE COMPENSATION mechanisms result in adjustments to the level GENE EXPRESSION when there are changes or differences in gene dosage.

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