Results 61 to 70 of about 4,768 (212)

Chemical Characterization of Toxic Elements in Plastic Utensils: Key Insights and Health Impacts

open access: yesCLEAN – Soil, Air, Water, Volume 54, Issue 5, May 2026.
Toxic elements in plastic utensils are assessed using portable X‐ray fluorescence and specific migration tests with water and 3% acetic acid as food simulants. Cadmium, lead, arsenic, and mercury are detected in the utensils, and migration results show exceedances of specific migration limits, particularly for lead, mercury, and cadmium. These findings
Elizeu Chiodi Pereira   +5 more
wiley   +1 more source

Effect of Cellular Location on the Function of Ferrochelatase [PDF]

open access: yesJournal of Biological Chemistry, 1995
Ferrochelatase, the terminal enzyme of the heme biosynthetic pathway, is a nuclear encoded protein that is synthesized in the cytoplasm in a precursor form and then is translocated to the matrix side of the inner mitochondrial membrane. Since the product of the enzymatic reaction, protoheme IX, is utilized almost exclusively in the cytoplasmic ...
A R, Prasad, H A, Dailey
openaire   +2 more sources

Modeling the ferrochelatase c.315-48C modifier mutation for erythropoietic protoporphyria (EPP) in mice

open access: yesDisease Models & Mechanisms, 2017
Erythropoietic protoporphyria (EPP) is caused by deficiency of ferrochelatase (FECH), which incorporates iron into protoporphyrin IX (PPIX) to form heme.
Jasmin Barman-Aksözen   +9 more
doaj   +1 more source

Superior Induction of Apoptosis by Blue Light Compared to Red Light Photodynamic Therapy in Cutaneous Squamous Cell Carcinoma Keratinocytes

open access: yesJournal of Biophotonics, Volume 19, Issue 5, May 2026.
This study demonstrates that 5‐ALA BL PDT induces greater levels of apoptosis in SCC cells in a wavelength‐, 5‐ALA dose‐, and temperature‐dependent manner, compared to 5‐ALA RL PDT, with higher concentrations of ALA and elevated temperatures stimulating the greatest apoptotic activity.
Julia Stolyar   +5 more
wiley   +1 more source

Purification and characterization of chicken erythrocyte ferrochelatase [PDF]

open access: yesBiochemical Journal, 1984
Ferrochelatase (EC 4.99.1.1) was purified 2000-fold to apparent homogeneity from isolated chicken erythrocyte mitochondria. The purified enzyme yields a single band on sodium dodecyl sulphate/polyacrylamide-gel electrophoresis with an apparent Mr of 42 000.
J W, Hanson, H A, Dailey
openaire   +2 more sources

Mammalian ferrochelatase. Expression and characterization of normal and two human protoporphyric ferrochelatases.

open access: yesJournal of Biological Chemistry, 1994
Ferrochelatase (EC 4.99.1.1) catalyzes the terminal step in the heme biosynthetic pathway, the insertion of ferrous iron into protoporphyrin IX. Herein we report the expression, purification, and characterization of the mature processed form of human and mouse ferrochelatase in Escherichia coli JM109.
H A, Dailey, V M, Sellers, T A, Dailey
openaire   +2 more sources

Porphyrin Interactions with Wild Type and Mutant Mouse Ferrochelatase [PDF]

open access: yes, 1999
Ferrochelatase (EC 4.99.1.1), the terminal enzyme of the heme biosynthetic pathway, catalyzes Fe2+ chelation into protoporphyrin IX. Resonance Raman and W-visible absorbance spectroscopes of wild type and engineered variants of murine ferrochelatase were
Ferreira, Gloria C.   +4 more
core  

Amelioration of the Metabolic Defect in Erythropoietic Protoporphyria by Expression of Human Ferrochelatase in Cultured Cells

open access: yes, 1995
The cDNA for human ferrochelatase, the enzyme that is defective in the rare genetic disease erythropoletic protoporphyria (EPP), was tested for its ability to allow the expression of ferrochelatase in mammalian cells.
James L. Michel   +5 more
core   +1 more source

Molecular insights into frataxin-mediated iron supply for heme biosynthesis in Bacillus subtilis.

open access: yesPLoS ONE, 2015
Iron is required as an element to sustain life in all eukaryotes and most bacteria. Although several bacterial iron acquisition strategies have been well explored, little is known about the intracellular trafficking pathways of iron and its entry into ...
Andreas Mielcarek   +3 more
doaj   +1 more source

Global Burden of Lead Exposure: Integrating Epidemiology, Molecular Mechanisms, and Mitigation Approaches

open access: yesHealth Science Reports, Volume 9, Issue 3, March 2026.
ABSTRACT Background Lead is a nonessential, toxic heavy metal that causes widespread environmental contamination, affecting humans, animals, plants, and ecosystems. Globally, an estimated 800 million children have blood lead levels (BLLs) above 5 µg/dL.
Gudisa Bereda
wiley   +1 more source

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