Determination of affinity method : Metallo-β-lactamase activity assays

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AptBacDB_ID ⇅ PMID/DOI ⇅ Year ⇅ Title ⇅ Aptamer name ⇅ Sequence (5′ to 3′) ⇅ Length ⇅ Library ⇅ Type ⇅ Target Organism ⇅ Target ⇅ Objective/Mechanism ⇅ Outcome/Inhibitory effect ⇅ No. of selection round SELEX ⇅ Determination of affinity method ⇅ Kd value ⇅ Activity Role ⇅ Method ⇅ Modification ⇅ Cytotoxicity (cell viability) ⇅ Stability⇅ Potential Candidate ⇅ Half-life ⇅ Patent ⇅
ABdb_0058 197514192009Antibiotic resistance in bacteria: novel metalloenzyme inhibitorsMetallo-β-lactamase-targeting aptamersCGCGAGCTCCGCGCG-AACCAAACTTGGATCGGTGCACATGTCGAA-CGCGCGCATATGGCGC615'-CGCGAGCTCCGCGCG-N30-CGCGCGCATATGGCGC-3'ssDNABacillus Cereus 5/B/6 and Escherichia Coli (E. Coli) TAP56Metallo-β-lactamase active sitesIdentify aptamers that bind and inhibit the hydrolytic enzyme activity by interfering with the active-site metal ions of the β-lactamase enzyme.LC50 values in the presence of 5 μM cephalexin: 75 μM and 32 μM for B. cereus 5/B/6 and E. coli TAP56, respectively.21Metallo-β-lactamase activity assaysKi = 0.92 nMTherapeuticsSELEXN/AN/AN/AN/AN/AN/A