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1 wrz 2012 · Mo needs to be complexed by a special cofactor in order to gain catalytic activity. The molybdenum cofactor (Moco) forms the active site of all eukaryotic Mo enzymes. Mo enzymes are an essential part of the global carbon, nitrogen and sulfur cycles. Moco is synthesized by a conserved pathway that consists of four steps. Iron and copper...
10 cze 2011 · This article will first present those plant enzymes that need Mo as catalytic metal, followed by a more cell biological part that will describe the way that Mo takes from uptake into the cell, via formation of the Moco and its storage, to its final insertion into apo-metalloenzymes.
The transition element molybdenum (Mo) is of essential importance for (nearly) all biological systems as it is required by enzymes catalyzing important reactions within the cell. The metal itself is biologically inactive unless it is complexed by a special cofactor.
In plants, the most prominent Mo-enzymes are nitrate reductase, sulfite oxidase, xanthine dehydroge-nase, aldehyde oxidase, and the mitochondrial amidoxime reductase. The biosynthesis of Moco involves the complex interaction of six proteins and is a process of four steps, which also includes iron as well as copper in an indis-pensable way.
6 lut 2014 · Molybdenum metabolism in higher plant cells. The main components of molybdenum metabolism in plants are shown including the Moco biosynthetic pathway (CNX proteins) in mitochondria and cytosol, the Moco user enzymes and their respective main functions in nitrogen assimilation (NR), ABA synthesis (AAO3), purine catabolism (XDH1), and sulfite ...
10 cze 2011 · Characterization of plant XOR mutants and isolated XOR proteins from various plant species provided evidence that the enzyme plays significant role in plant growth, leaf senescence, fruit...
The transition element molybdenum (Mo) is of essential importance for (nearly) all biological systems as it is required by enzymes catalyzing diverse key reactions in the global carbon, sulfur and nitrogen metabolism.
