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Olga Protchenko

Researcher at National Institutes of Health

Publications -  22
Citations -  1634

Olga Protchenko is an academic researcher from National Institutes of Health. The author has contributed to research in topics: Heme & Saccharomyces cerevisiae. The author has an hindex of 16, co-authored 20 publications receiving 1277 citations.

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Response to Iron Deprivation in Saccharomyces cerevisiae

TL;DR: Iron is an essential nutrient for almost every organism because iron cofactors, such as heme and iron-sulfur clusters (ISC), are required for the activity of numerous cellular enzymes involved in a wide range of cellular processes.
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Iron catalysis of lipid peroxidation in ferroptosis: Regulated enzymatic or random free radical reaction?

TL;DR: A two-stage iron-dependent mechanism for iron in ferroptosis is proposed by combining its catalytic role in the 15-LOX-driven production of 15-hydroperoxy-AA-PE (HOO-AA -PE) as well as possible involvement of loosely-bound iron in oxidative cleavage of HOO- AA-PE to oxidatively truncated electrophiles capable of attacking nucleophilic targets in yet to be identified proteins leading to cell demise.
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Three cell wall mannoproteins facilitate the uptake of iron in Saccharomyces cerevisiae.

TL;DR: FIT-deletion strains exhibited increased expression of Aft1p target genes as measured by a FET3-lacZreporter gene or by Arn1p Western blotting, indicating that cells respond to the absence of FIT genes by up-regulating systems of iron uptake.
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Metabolic Response to Iron Deficiency in Saccharomyces cerevisiae

TL;DR: Iron-deficient cells exhibited depletion of most iron enzyme activities, but loss of activity during iron deficiency did not consistently disrupt metabolism, and Amino acid homeostasis was robust, but iron deficiency impaired lipid synthesis, altering the properties and functions of cellular membranes.