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Tyrosine sulfation is a ubiquitous posttranslational modification that regulates extracellular protein–protein interactions, intracellular protein transportation modulation, and protein proteolytic process. However, identifying tyrosine sulfation sites remains a challenge due to the lability of sulfation sequences. In this study, we developed a method called PredSulSite that incorporates protein secondary...
Interference of binding of Tat protein to TAR RNA in HIV-1-infected cells may be a useful therapeutic strategy for AIDS. An electrophoretic assay to screen potential low-molecular-weight (<2 kDa) Tat antagonists has been established. A radiolabeled TAR RNA fragment (ΔTAR) is retarded in mobility when bound by a Tat peptide–polyethylene glycol conjugate (Tat–PEG), which is used in place of the Tat...
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