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Showing 1 to 20 of 34 for “"Hemin"”.
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Moessbauer Studies of Nuclear Hyperfine Interactions in Hemin and Bis-Imidazole Hemin
Made available in DSpace on 2015-05-12T22:38:46Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7212064.PDF: 2558026 bytes, checksum: 5a258db313dd3ae15c96f41116ce2a4b (MD5) Previous issue date: 1971
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Mössbauer studies of nuclear hyperfine interactions in hemin and bis-imidazole hemin
Submitted by William Weathers (weathrs2@illinois.edu) on 2012-03-08T21:52:29Z No. of bitstreams: 1 1971_amusa.pdf: 2561177 bytes, checksum: 00fe5aaa2f265ffcf1febf008289a921 (MD5)
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Hemin Acquisition in Bartonella quintana
… requires an extraordinary concentration of hemin, and genomic analyses indicate several potential uptake systems and iron-responsive regulators. Transcription of the <i>hbp</i> genes (hemin binding protein genes) is responsive to alterations in available hemin and an HbpA homolog in <i>B. …
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Hemin Acquisition in Bartonella quintana
… requires an extraordinary concentration of hemin, and genomic analyses indicate several potential uptake systems and iron-responsive regulators. Transcription of the <i>hbp</i> genes (hemin binding protein genes) is responsive to alterations in available hemin and an HbpA homolog in <i>B. …
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Effect of allopurinol and hemin on some biological markers of aging in broiler chickens
… the plasma uric acid concentrations using hemin and allopurinol and determine its effect on skin pentosidine, shear force value of Pectoralis major muscle, plasma glucose, body and breast weight, and chemiluminescence induced oxidative stress in broiler chickens. Allopurinol decreased …
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Tailoring electrospun nanofibers and electrosprayed nanoparticles to enhance cellular uptake of low bioavailability drugs
… less than 100 nm. For the second project, hemin was selected for preparation of formulations for treatment of anaemia, as current treatments have side effects like gastric irritation and low bioavailability. Electrospun nanofibers and electrosprayed nanoparticles were tailored to enhance …
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ΑΝΑΛΥΣΗ ΤΩΝ ΑΛΛΗΛΕΠΙΔΡΑΣΕΩΝ ΑΝΘΡΑΚΥΚΛΙΝΩΝ-ΣΙΔΗΡΟΠΟΡΦΥΡΙΝΩΝ ΣΤΟ ΑΙΜΟΠΟΙΗΤΙΚΟ ΣΥΣΤΗΜΑ
… OF ADR ON SEVERAL TISSUES. THE OBSERVATIONS THAT HEMIN (IRON-PROTOPORPHYRIN IX) COUNTERACTS ADR-INDUCED CYTOTOXICITY SELECTIVELY IN NORMAL AND MALIGNANT HEMOPOIETIC CELLS, LED US TO PROPOSE THAT ADR MAY INTERACT WITH HEMOPROTEINS OF VITAL IMPORTANCE TO BOTH DIVIDING AND NON-DIVINDING CELLS. IN …
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Expression, Purification and Molecular Characterisation of Sideroflexin Proteins
… experiments and binding equilibrium assays using hemin, but hemin intercalates into detergent micelle and it was not possible to separate specific binding from non-specific hemin-detergent interactions, but this lead needs to be explored further.
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The Role of Gene Expression Noise In Mammalian Cell Survival
… such as serum starvation and long-term hemin treatment altered mean fluorescence in at least one clone. Additionally, monitoring migration after cell wounding revealed increased non-uniform fluorescence at the wound edge. The increased mean fluorescence for the potentially bistable …
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Mechanisms of Oxidative Stress Resistance in Porphyromonas gingivalis W83
… genes, DNA repair mechanisms and the unique hemin layer of <em>P. gingivalis. </em>We tested the physiological function of the isogenic <em>ahpC</em> and <em>bcp</em>mutants to hydrogen peroxide. When compared to the wild-type <em>P. gingivalis</em> W83, both the <em>ahpC</em> and …
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Haemophilus influenzae as a chassis for directed endosymbiosis
… on host-relevant cofactors including NAD and hemin. These features make it attractive for engineering bacterial endosymbionts. First, H. influenzae strains lacking the restriction endonuclease genes HindIIR and HindIIIR were shown to transform more efficiently by electroporation than …
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Role of Extracytoplasmic Function Sigma Factors in Porphyromonas gingivalis
… such as sod, trx, tpx, ftn, feOB and the hemin uptake locus, hmu, are downregulated in the mutant deficient in SigH designated as V2948. Our RNA-seq analysis of SigG showed that there is no change in the regulation of genes involved in oxidative stress protection and metal homeostasis in …
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Interactions of paraquat and nitrodiphenylether herbicides with the chloroplast photosynthetic electron transport in the activation of toxic oxygen species
… and five heme-iron derivatives {hemoglobin, hemin, hematin, ferritin, and ferrocene} were screened for their potential to counteract paraquat toxicity on pea (Pisum sativum L. cv. Little Marvel) isolated chloroplasts. H₂O → MV/O₂ and H₂O → Fd/NADP+ were the two Hill reactions assayed with …
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Characterization of Hpk2-Rrp2, two-component regulatory system in Treponema denticola
… to environmental stimuli. Hpk2 was shown to bind hemin via a putative heme-binding domain within the PAS domain. Hemin binding to Hpk2 positively regulated its autokinase ability under anaerobic conditions, suggesting that Hpk2 activation may play a role in the migration of T. denticola away from …
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Identification and molecular characterization of a putative heme ABC transporter in Neisseria meningitidis
… the binding of purified NMB0586 protein to hemin-agarose demonstrated concentration dependent binding. However, increasing concentrations of competing heme ligand did not result in a decrease in NMB0586 protein binding to hemin-agarose. NMB0586 was also unable to functionally complement a …
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Staphylococcus aureus small colony variants use heme and staphyloferrin B for iron acquisition
… generated a stable SCV that was auxotrophic for hemin and formed small colonies on solid media. To support growth under iron deplete conditions, my data revealed that S. aureus hemB synthesizes the siderophore staphyloferrin B, but not staphyloferrin A, although both siderophores could be …
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The Role of Metal Ions and Metallo-Complexes in Luminol Chemiluminescence (Catalysis)
… The metallo-catalysts studied were hemin, hemoglobin, horseradish peroxidase (HRP), ferricyanide, Co(II), Cu(II), Cr(III), Fe(II), Fe(III), Ni(II) and Mn(II). In contrast to most reports in the literature, these measurements allowed the direct determination of quantum yield of CL …
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In vivo metal substitution in bacteroides superoxide dismutase
… a progressively larger fraction of MnSOD. Hemin, added to the Fe-restricted media, did not serve as an iron source for FeSOD formation. Superoxide dismutase specific activities varied (3-6 U/mg) in each extract but not as a function of manganese concentration.
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Determination of hydrogen peroxide using immobilized chemiluminescence reagents and flow injection analysis
… determination of peroxide using solution-phase hemin as catalyst (detection limit = 0.4 $\mu$M, relative standard deviation (rsd) = 2.5%). Next, horseradish peroxidase (HRP) was immobilized on nylon membranes. Luminol was immobilized on to an anion exchange resin and packed in a column. When …
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