Results 21 to 30 of about 414,309 (352)

Heme‐hemopexin: A ‘Chronosteric’ heme‐protein [PDF]

open access: yesIUBMB Life, 2007
AbstractHemopexin (HPX) serves as scavenger and transporter of toxic plasma heme to the liver. HPX is formed by two four‐bladed β‐propeller domains, resembling two thick disks that lock together at a 90° angle. The heme is bound between the two β‐propeller domains in a pocket formed by the interdomain linker peptide.
ASCENZI P, FASANO, MAURO
openaire   +4 more sources

Genome-scale modeling drives 70-fold improvement of intracellular heme production in Saccharomyces cerevisiae

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2022
Significance Heme availability in the cell enables the proper folding and function of enzymes, which carry heme as a cofactor. Using genome-scale modeling, we identified metabolic fluxes and genes that limit heme production.
O. P. Ishchuk   +6 more
semanticscholar   +1 more source

Exogenously Scavenged and Endogenously Synthesized Heme Are Differentially Utilized by Mycobacterium tuberculosis

open access: yesMicrobiology Spectrum, 2022
Heme is both an essential cofactor and an abundant source of nutritional iron for the human pathogen Mycobacterium tuberculosis. While heme is required for M. tuberculosis survival and virulence, it is also potentially cytotoxic. Since M.
Rebecca K. Donegan   +11 more
doaj   +1 more source

Relación existente entre la ratio 2D:4D y la composición corporal en adolescentes de Extremadura

open access: yesE-Motion, 2020
Introducción: La ratio 2D:4D es el cociente entre la longitud del dedo índice y anular de la mano, asociada al balance entre andrógenos y estrógenos, durante el desarrollo embrionario. Una baja proporción 2D:4D, refleja niveles más altos de testosterona
Maria Mendoza Muñoz   +3 more
doaj   +1 more source

The Worst Things in Life are Free: The Role of Free Heme in Sickle Cell Disease

open access: yesFrontiers in Immunology, 2021
Hemolysis is a pathological feature of several diseases of diverse etiology such as hereditary anemias, malaria, and sepsis. A major complication of hemolysis involves the release of large quantities of hemoglobin into the blood circulation and the ...
Oluwabukola T Gbotosho   +2 more
semanticscholar   +1 more source

Excess Heme Promotes the Migration and Infiltration of Macrophages in Endometrial Hyperplasia Complicated with Abnormal Uterine Bleeding

open access: yesBiomolecules, 2022
In patients, endometrial hyperplasia (EH) is often accompanied by abnormal uterine bleeding (AUB), which is prone to release large amounts of heme. However, the role of excess heme in the migration and infiltration of immune cells in EH complicated by ...
Lu-Yu Ruan   +8 more
doaj   +1 more source

Influence of Body Composition on Physical Fitness in Adolescents

open access: yesMedicina, 2020
Background and objectives: Childhood obesity is one of the main public health issues facing advanced societies. The Spanish population presents 28.6% overweight or obese adolescents, and Extremadura, 22.3%.
María Mendoza-Muñoz   +5 more
doaj   +1 more source

Hsp90 in Human Diseases: Molecular Mechanisms to Therapeutic Approaches

open access: yesCells, 2022
The maturation of hemeprotein dictates that they incorporate heme and become active, but knowledge of this essential cellular process remains incomplete. Studies on chaperon Hsp90 has revealed that it drives functional heme maturation of inducible nitric
Mamta P. Sumi, Arnab Ghosh
doaj   +1 more source

NEAr Transporter (NEAT) Domains: Unique Surface Displayed Heme Chaperones That Enable Gram-Positive Bacteria to Capture Heme-Iron From Hemoglobin

open access: yesFrontiers in Microbiology, 2021
Iron is an important micronutrient that is required by bacteria to proliferate and to cause disease. Many bacterial pathogens forage iron from human hemoglobin (Hb) during infections, which contains this metal within heme (iron–protoporphyrin IX ...
Ken Ellis-Guardiola   +6 more
doaj   +1 more source

COVID-19:Attacks the 1-Beta Chain of Hemoglobin and Captures the Porphyrin to Inhibit Human Heme Metabolism

open access: yes, 2020
The novel coronavirus pneumonia (COVID-19) is an infectious acute respiratory caused by the novel coronavirus. The virus is the positive-strand RNA one with high homology to bat coronavirus.
Wenzhong Liu, Hualan Li
semanticscholar   +1 more source

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