Jared W Pelo

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MAPKAP kinase 2 (MK2) is required for tumor necrosis factor synthesis. Tristetraprolin (TTP) binds to the 3'-untranslated region of tumor necrosis factor mRNA and regulates its fate. We identified in vitro and in vivo phosphorylation sites in TTP using nanoflow high pressure liquid chromatography microelectrospray ionization tandem mass spectrometry and(More)
Regulation of messenger RNA stability by AU-rich elements is an important means of regulating genes induced by growth factors and cytokines. Nup475 (also known as tristetraprolin, or TIS11) is the prototype for a family of zinc-binding Cys(3)His motif proteins required for proper regulation of tumor necrosis factor mRNA stability in macrophages. We(More)
The MNK kinases are downstream of both the p38 and ERK MAP kinase pathways and act to increase gene expression. MNK inhibition using the compound CGP57380 has recently been reported to inhibit tumor necrosis factor (TNF) production in macrophage cell lines stimulated with Escherichia coli lipopolysaccharide (LPS). However, the range of receptors that signal(More)
Random double-stranded oligonucleotides are useful reagents to identify the optimal binding sites for DNA-binding proteins, such as transcriptional activators. Some applications require ligation of random oligonucleotides to form plasmid-based libraries such as the yeast one-hybrid system, where the activation of a cloned DNA sequence from a library of(More)
Tristetraprolin (TTP) is the prototype for a family of RNA binding proteins that bind the tumor necrosis factor (TNF) messenger RNA AU-rich element (ARE), causing deadenylation of the TNF poly(A) tail, RNA decay, and silencing of TNF protein production. Using mass spectrometry sequencing we identified poly(A) binding proteins-1 and -4 (PABP1 and PABP4) in(More)
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