منابع مشابه
The Adenylate-Forming Enzymes AfeA and TmpB Are Involved in Aspergillus nidulans Self-Communication during Asexual Development
Aspergillus nidulans asexual sporulation (conidiation) is triggered by different environmental signals and involves the differentiation of specialized structures called conidiophores. The elimination of genes flbA-E, fluG, and tmpA results in a fluffy phenotype characterized by delayed conidiophore development and decreased expression of the conidiation essential gene brlA. While flbA-E encode ...
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Aminoacyl-tRNA synthetases are essential for the correct linkage of amino acids to cognate tRNAs to maintain the fidelity of protein synthesis. Tractable, continuous assays are valuable for characterizing the functions of synthetases and for their exploitation as drug targets. We have exploited the unexplored ability of these enzymes to consume adenosine tetraphosphoadenosine (diadenosine 5',5‴...
متن کاملNonadrenal Epinephrine - forming Enzymes in Humans
Animal studies indicate that nonadrenal tissues may synthesize epinephrine (E). Here we demonstrate phenylethanolamine N-methyltransferase (PNMT) and/or nonspecific Nmethyltransferase (NMT) enzymatic activity in human lung, kidney, heart, liver, spleen, and pancreas. There was a significant overall correlation (r = 0.34) between tissue PNMT and E. PNMT and NMT in human tissues differed in subst...
متن کاملSegments crucial for membrane translocation and pore-forming activity of Bordetella adenylate cyclase toxin.
Bordetella adenylate cyclase toxin-hemolysin (CyaA, AC-Hly, or ACT) permeabilizes cell membranes by forming small cation-selective (hemolytic) pores and subverts cellular signaling by delivering into host cells an adenylate cyclase (AC) enzyme that converts ATP to cAMP. Both AC delivery and pore formation were previously shown to involve a predicted amphipathic alpha-helix(502-522) containing a...
متن کاملPhotosensitizing effects of Photofrin II on the site-selected mitochondrial enzymes adenylate kinase and monoamine oxidase.
The response to Photofrin II-induced photosensitization on the activities of mitochondrial monoamine oxidase (MAO) and adenylate kinase (AK) were studied in order to gain further insight into site specific effects. Utilizing intact mitochondria in vitro, both MAO, located on the cytoplasmic side of the outer mitochondrial membrane, and AK, located in the intermembrane space, were inhibited by e...
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ژورنال
عنوان ژورنال: Current Opinion in Structural Biology
سال: 2009
ISSN: 0959-440X
DOI: 10.1016/j.sbi.2009.09.004