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pyrophosphatase

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pyrophosphatase /py·ro·phos·pha·tase/ (-fos´fah-tās) any enzyme that catalyzes the hydrolysis of a pyrophosphate bond, cleaving between the two phosphate groups.
py·ro·phos·pha·tase (pr-fsf-ts, -tz)
n.
Any of various enzymes that selectively cleave a pyrophosphate situated between two phosphoric groups, leaving one phosphoric group on each of the two fragments.

pyrophosphatase [pi″ro-fos´fah-tās]
any enzyme that catalyzes the hydrolysis of central pyrophosphate linkages.

pyrophosphatase (pir´ōfos´ftās´),
n an enzyme that cleaves an inorganic pyrophosphate from adenosyl triphosphate, leaving adenosine monophosphate.

pyrophosphatase
any enzyme that catalyzes the hydrolysis of central pyrophosphate linkages.


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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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