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Properties of 2-C-Methyl-D-Erythritol 2,4-Cyclopyrophosphate, an intermediate in Nonmevalonate Isoprenoid Biosynthesis

Ostrovsky, D. N., Dyomina, G. R., Deryabina, Y. I., Goncharenko, A .V., Eberl, Matthias, Shumaev, A. and Shashkov, S. 2003. Properties of 2-C-Methyl-D-Erythritol 2,4-Cyclopyrophosphate, an intermediate in Nonmevalonate Isoprenoid Biosynthesis. Applied Biochemistry and Microbiology c/c of Prikladnaia Biokhimiia i Mikrobiologiia 39 (5) , pp. 497-502. 10.1023/A:1025452804046

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Abstract

Extraction and purification from the biomass of Corynebacterium ammoniagenes of 2-C-methyl-D-erythritol 2,4-cyclopyrophosphate (MEC) was associated with its spontaneous transformation into a number of derivatives (which was due to the pyrophosphate bond lability and the formation of complexes with metals). These derivatives included 1,2-cyclophospho-4-phosphate, 2,4-diphosphate, 2,3-cyclophosphate, 1,4-diphosphate, and 3,5-diphosphate (identified by 1H, 31P, and 13C NMR spectroscopy) and accounted for about 10% of the MEC. When added to a solution of DNA in the presence of the Fenton reagent, MEC prevented DNA decomposition. In addition, MEC slowed down the interaction of the reagent with tempol radicals, which indicates that complexation of ferrous ions by MEC attenuates their ability to catalyze the formation of hydroxyl radicals from hydrogen peroxide. In the presence of 0.23 mM MEC, the rate of respiration of rat liver mitochondria increased by 1.8 times. At 0.1–1.0 mM, MEC activated in vitro proliferation of human Vgamma9 T cells. It is suggested that MEC acts as an endogenous stabilizing agent for bacterial cells subjected to oxidative stress and as an immunomodulator for eukaryotic hosts.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Systems Immunity Research Institute (SIURI)
Subjects: R Medicine > R Medicine (General)
R Medicine > RZ Other systems of medicine
Uncontrolled Keywords: medical microbiology; biochemistry general; microbiology
Publisher: Springer Verlag
ISSN: 0003-6838
Last Modified: 11 Sep 2020 08:40
URI: http://orca.cf.ac.uk/id/eprint/64092

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