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pyrophosphatase

   Also found in: Medical, Wikipedia 0.01 sec.
pyrophosphatase [‚pī·rō′fä·sfə‚tās]
(biochemistry)
An enzyme catalyzing hydrolysis of esters containing two or more molecules of phosphoric acid to form a simpler phosphate ester.


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The reaction is then completed by means of in organic pyrophosphatase.
Furthermore, ferric salts promote the formation and deposition of intra-articular CPPD crystals by inhibiting the activity of synovial pyrophosphatase (manifested as chondrocalcinosis on radiographs) and by decreasing the clearance of intra-articular immune complexes by inhibiting the activity of synovial reticuloendothelial cells.
NAD synthetase, a member of the ATP pyrophosphatase family of enzymes, catalyzes the last step of the biosynthesis of nicotinamide adenine dinucleotide (NAD) from deamido nicotinamide adenine dinucleotide (NaAD), using the chemical energy in ATP.
 
 
 
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