Appl Psychophysiol Biofeedback
December 2024
Unnatural base pairs (UBPs) have been developed to expand the genetic alphabet and . UBP dNaM-dTPT3 and its analogues have been successfully used to construct the first set of semi-synthetic organisms, which suggested the great potential of UBPs to be used for producing novel synthetic biological parts. Two prerequisites for doing so are the facile manipulation of DNA containing UBPs with common tool enzymes, including DNA polymerases and ligases, and the easy availability of UBP-containing DNA strands.
View Article and Find Full Text PDFBase excision (BE) is an important yet hard-to-control biological event. Unnatural base pairs are powerful tools to revolutionize biological studies in various areas. In this paper, we report a visible-light-induced method to construct site-specific unnatural BE and show the influence of its regulation on transcription and translation levels.
View Article and Find Full Text PDFPrevious studies have led to opposing hypotheses about the requirement of intermolecular disulfide exchange in the binding of the iron regulatory peptide hepcidin to its receptor ferroportin. To clarify this issue, we used the diaminodiacid approach to replace the disulfide bonds in hepcidin with non-reducible thioether bonds. Our results implied that disulfide exchange is not required for the interaction between hepcidin and ferroportin.
View Article and Find Full Text PDFHistone ubiquitination affects the structure and function of nucleosomes through tightly regulated dynamic reversible processes. The efficient preparation of ubiquitinated histones and their analogs is important for biochemical and biophysical studies on histone ubiquitination. Here, we report the CAACU (cysteine-aminoethylation assisted chemical ubiquitination) strategy for the efficient synthesis of ubiquitinated histone analogs.
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