Bits, nucleotides and speed.

The chemistry of aptamers is largely limited to natural nucleotides, and although modifications nucleic acids can enhance target aptamer affinity, there has not yet been a technology for selecting...

The band widths in Raman spectra are sensitive to dynamics active on a time scale from 0.1 to 10 ps. The band widths of nucleotide vibrations and their dependence on temperature, concentration, and structure are reported. From the experimental band widths and second moments, it is derived that the adenine vibrations at 725, 1336, 1480, and 1575 cm01 , and the uracil vibration at 787 cm01 , are ...

Sensitive and specific radioimmunoassays have been developed for cyclic adenosine 3’, 5’-monophosphate (CAMP), cyclic guanosine 3’ ,5’-monophosphate (cGMP), cyclic inosine 3’ ,5’-monophosphate (cIMP), and cyclic uridine 3’, 5’monophosphate (cUMP). These assays are based upon competition of the cyclic nucleotide with isotopically labeled cyclic nucleotide derivatives for binding sites on specifi...

While the genome sequence determines an organism’s proteins, methylation of nucleotides themselves can confer additional properties. In bacteria, MTs modify specific nucleotide motifs to allow discrimination “self” from “nonself” DNA, e.g., bacteriophages.

Structural and magnetic properties of purine and pyrimidine nucleotides (CMP, UMP, dTMP, AMP, GMP, IMP) were studied at different levels of ab initio molecular orbital theory. These calculations were performed at the hartree-fock level and density functional B3LYP methods. Geometries were fully optimized by following Cs symmetry restrictions. The standard 6-31G** basis set which includes polari...