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- W2912189927 abstract "We demonstrate that a new, stable, artificial TATA (T - thymine, A - adenine) box is recognized by amino acids recognizing the natural TATA box. Here, the former mimicked, as a minimal motif, oligodeoxyribonucleotide interactions with amino acids of proteins involved in repairing of damaged dsDNA. By electropolymerization, we molecularly imprinted non-labeled 5'-TATAAA-3' via Watson-Crick nucleobase pairing, thus synthesizing, in a one-step procedure, the hexakis[bis(2,2'-bithien-5-yl)] TTTATA and simultaneously hybridizing it with the 5'-TATAAA-3' template. That is, a stable dsDNA analog having a controlled sequence of nucleobases was formed in the molecularly imprinted polymer (MIP). The 5'-TATAAA-3' was by the X-ray photoelectron spectroscopy (XPS) depth profiling found to be homogeneously distributed both in the bulk of the MIP film and on its surface. The 5'-TATAAA-3' concentration in the 2.8(±0.2)-nm relative surface area, ~140-nm thick MIP film was 2.1 mM. The MIP served as a matrix of an artificial TATA box with the TATAAA-promoter sequence. We comprehensively characterized this artificial DNA hybrid by the polarization-modulation infrared reflection-absorption spectroscopy (PM-IRRAS) and X-ray photoelectron spectroscopy (XPS). Further, we examined interactions of DNA repairing TATA binding protein (TBP) amino acids with the artificial TATA box prepared. That is, molecules of l-phenylalanine aromatic amino acid were presumably engaged in stacking interactions with nucleobase steps of this artificial TATA box. The nitrogen-to‑phosphorus atomic % ratio on the surface of the MIP-(5'-TATAAA-3') film increased by ~1.6 times after film immersing in the l-glutamic acid solution, as determined using the XPS depth profiling. Furthermore, l-lysine and l-serine preferentially interacted with the phosphate moiety of 5'-TATAAA-3'. We monitored amino acids interactions with the artificial TATA box using real-time piezoelectric microgravimetry at a quartz crystal microbalance (QCM) and surface plasmon resonance (SPR) spectroscopy under flow injection analysis (FIA) conditions." @default.
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- W2912189927 date "2019-07-01" @default.
- W2912189927 modified "2023-09-24" @default.
- W2912189927 title "Promoting bioanalytical concepts in genetics: A TATA box molecularly imprinted polymer as a small isolated fragment of the DNA damage repairing system" @default.
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- W2912189927 doi "https://doi.org/10.1016/j.msec.2019.02.038" @default.
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