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Acyl-homoserine lactone (AHL) quorum sensing signals play a key role in synchronizing virulence gene expression in Pseudomonas aeruginosa, which could cause fatal bloodstream infections. We showed that AHL inactivation activity, albeit with variable efficiency, was conserved in the serum samples of all the 6 tested mammalian animals. High-performance liquid chromatography and mass spectrometry analyses...
Isomaltulose synthase (PalI) catalyzes hydrolysis of sucrose and formation of α-1,6 and α-1,1 bonds to produce isomaltulose (α-D-glucosylpyranosyl-1,6-D-fructofranose) and small amount of trehalulose (α-D-glucosylpyranosyl-1,1-D-fructofranose). A potential isomaltulose synthase-specific motif ( 325 RLDRD 329 ), that contains a ‘DxD’ motif conserved in many glycosyltransferases, was...
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