Results 21 to 30 of about 42,175 (244)

Fluorescence-based Heme Quantitation in Toxoplasma Gondii

open access: yesBio-Protocol, 2021
Toxoplasma gondii is a highly prevalent protozoan pathogen throughout the world. As a eukaryotic intracellular pathogen, Toxoplasma ingests nutrients from host cells to support its intracellular growth. The parasites also encode full or partial metabolic
Amy Bergmann, Zhicheng Dou
doaj   +1 more source

Growth phenotype analysis of heme synthetic enzymes in a halophilic archaeon, Haloferax volcanii. [PDF]

open access: yesPLoS ONE, 2017
Halophilic euryarchaea lack many of the genes necessary for the protoporphyrin-dependent heme biosynthesis pathway previously identified in animals and plants.
Naoki Kosugi   +4 more
doaj   +1 more source

The Cytochrome P450 OxyA from the Kistamicin Biosynthesis Cyclization Cascade is Highly Sensitive to Oxidative Damage

open access: yesFrontiers in Chemistry, 2022
Cytochrome P450 enzymes (P450s) are a superfamily of monooxygenases that utilize a cysteine thiolate–ligated heme moiety to perform a wide range of demanding oxidative transformations.
Anja Greule   +19 more
doaj   +1 more source

New Insights into the Pivotal Role of Iron/Heme Metabolism in TLR4/NF-κB Signaling-Mediated Inflammatory Responses in Human Monocytes

open access: yesCells, 2021
Iron metabolism and heme biosynthesis are essential processes in cells during the energy cycle. Alteration in these processes could create an inflammatory condition, which results in tumorigenesis.
Dong Young Kang   +4 more
doaj   +1 more source

Active Turnover of Heme in Hibernation Period in Mammals

open access: yesFrontiers in Physiology, 2020
Heme oxygenase (HO)-1 plays an important role during hibernation by catalyzing the degradation of heme to biliverdin/bilirubin, ferrous iron, and carbon monoxide, which activates the protective mechanisms against stress. In this context, it was important
Phil Jun Lee   +5 more
doaj   +1 more source

Identification of a bacteria-like ferrochelatase in Strongyloides venezuelensis, an animal parasitic nematode. [PDF]

open access: yesPLoS ONE, 2013
Heme is an essential molecule for vast majority of organisms serving as a prosthetic group for various hemoproteins. Although most organisms synthesize heme from 5-aminolevulinic acid through a conserved heme biosynthetic pathway composed of seven ...
Eiji Nagayasu   +6 more
doaj   +1 more source

Biosynthesis of heme in leukemic leukocytes [PDF]

open access: yesCancer, 1967
The incorporation of 59Fe into heme and the synthesis of δ-aminolevulinic acid by leukocyte homogenates were studied. Whereas polymorphonudear peritoneal exudates from rabbits, as well as leukocytes from healthy adult volunteers and patients with chronic leukemia, lacked the capacity to incorporate radioiron into heme, immature leukemic cells from ...
T R, Walters   +3 more
openaire   +2 more sources

Biosynthesis of heme in mammals

open access: yesBiochimica et Biophysica Acta (BBA) - Molecular Cell Research, 2006
Most iron in mammalian systems is routed to mitochondria to serve as a substrate for ferrochelatase. Ferrochelatase inserts iron into protoporphyrin IX to form heme which is incorporated into hemoglobin and cytochromes, the dominant hemoproteins in mammals. Tissue-specific regulatory features characterize the heme biosynthetic pathway.
Ajioka, Richard S.   +2 more
openaire   +2 more sources

The Trypanosoma cruzi Protein TcHTE Is Critical for Heme Uptake. [PDF]

open access: yesPLoS Neglected Tropical Diseases, 2016
Trypanosoma cruzi, the etiological agent of Chagas' disease, presents nutritional requirements for several metabolites. It requires heme for the biosynthesis of several heme-proteins involved in essential metabolic pathways like mitochondrial cytochromes
Marcelo L Merli   +6 more
doaj   +1 more source

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