A broad range of biochemicals, from proteins to nucleic acids, function properly only when associated with a metal, usually a divalent cation. Not any divalent metal will do: these metals differ in their ionic radius, dissociation in water, ionization potential, and number of unpaired electrons in their outer shells, and so substituting one metal for another often changes substrate positioning, redox reactivities, and physiological performance, and thus may serve as a regulatory mechanism. For instance, exchanging manganese for magnesium in several chloroplast enzymes maintains plant carbon-nitrogen balance under rising atmospheric CO concentrations. Here, we review this and a few other cases where association of proteins or nucleic acids with different metals control metabolism.
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| http://dx.doi.org/10.1016/j.cbpa.2018.09.017 | DOI Listing |
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SALL4 mediates SHP2 inhibition in myocardial fibroblasts through the DOT1L/H3K79me2 signaling pathway to promote the progression of myocardial infarction.
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December 2024
Clinical Laboratory, Hebei General Hospital, Shijiazhuang, Hebei, China.
Objective: To explore the influence of SALL4 in cardiac fibroblasts on the progression of myocardial infarction.
Methods: Analysis of genes specifically expressed in myocardial infarction by bioinformatics methods; The impact of SALL4 on myocardial infarction was assessed using mouse ultrasound experiments and Masson staining; The effect of SALL4 on the expression levels of collagen-I and collagen-III in myocardial tissue was examined by immunohistochemical staining; The migration ability of cardiac fibroblasts was evaluated using a Transwell assay; The proliferative ability of cardiac fibroblasts was tested using a CCK-8 assay; The relative fluorescence intensity of α-SMA and CTGF in cardiac fibroblasts were checked through immunofluorescence staining experiment; The expression of SALL4, DOT1L, H3K79me2, P53, SHP2, YAP, nucleus-YAP, collagen-I, α-SMA, CTGF, and PAI-1 in myocardial tissues or cardiac fibroblasts was detected using western blot analysis.
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