Words similar to abasic

Example sentences for: abasic

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This generates the necessary 3' hydroxyl group for DNA polymerases (pol β, δ or ε, in eukaryotes) to insert the correct nucleotide in later steps in the base excision repair pathway (BER-pathway) [ 7 8 ] . Recent crystal structures of huAPE1 complexed with DNA containing an abasic site [ 9 10 11 ] , combined with sequence analysis and site-directed mutagenesis, have defined the residues that participate in metal ion based cleavage of the phosphate backbone of the DNA [ 12 13 14 15 16 17 ] .
This redundancy of binding to the 3' side is unique to APE, as is its strong binding to the DNA opposite the abasic site.
A contact plot of huAPE1 with the DNA in the 1DE8 crystal structure (Figure 5) shows that motifs 1-3,5-8, and 10-12 all have residues close to the substrate, an oligonucleotide containing an abasic site (AP-DNA).
Of the four protein areas that bind to the DNA 3' of the abasic site, mutating F266 (molego 10) or W280 (middle of molego 11) decreases APE activity [ 33 ] . The F266 mutation is particularly interesting, as the mutants at this position had reduced substrate specificity and enhanced 3'-exonuclease activity.
Is the specificity of APE determined by binding 3' to an abasic site?