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The acylphosphatase from Escherichia coli (EcoAcP) is the first AcP so far studied with a disulfide bond. A mutational variant of the enzyme lacking the disulfide bond has been produced by substituting the two cysteine residues with alanine (EcoAcP mutational variant C5A/C49A, mutEcoAcP). The native states of the two protein variants are similar, as shown by far-UV and near-UV circular dichroism and...
Acylphosphatase (AcP) activity in prokaryotes was classically attributed to some aspecific acid phosphatases. We identified an open reading frame for a putative AcP in the b0968 Escherichia coli gene and purified the recombinant enzyme after checking by RT-PCR that it was indeed expressed. EcoAcP has a predicted typical fold of the AcP family but displays a very low specific activity and a high structural...
Six glycine residues of human muscle acylphosphatase (AcP) are evolutionarily conserved across the three domains of life. We have generated six variants of AcP, each having a glycine substituted by an alanine (G15A, G19A, G37A, G45A, G53A, and G69A). Three additional variants had Gly45 replaced by serine, glutamate, and arginine, respectively. The mutational variants do not, on average, have a lower...
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