Optimal sequence and structure of iron-responsive elements. Selection of RNA stem-loops with high affinity for iron regulatory factor
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Iron regulatory proteins 1 and 2 (IRP-1, IRP-2) interact with iron-responsive elements (IREs) present in the 5'- or 3'-untranslated regions (UTR) of several mRNAs coding for proteins in iron metabolism. Whereas binding of IRP-1 and -2 to an IRE in the 5'-U ...
Iron regulatory proteins (IRPs) 1 and 2 bind with equally high affinity to iron-responsive element (IRE) RNA stem-loops located in mRNA untranslated regions and, thereby, post-transcriptionally regulate several genes of iron metabolism. In this study we de ...
Transferrin receptor (TfR) mRNA expression is tightly linked to intracellular iron levels. Upon iron deprivation, the iron regulatory protein (IRP) stabilizes TfR mRNA by binding to stem-loop structures in its 3'-untranslated region, whereas increased iron ...
Cellular iron metabolism comprises pathways of iron-protein synthesis and degradation, iron uptake via transferrin receptor (TfR) or release to the extracellular space, as well as iron deposition into ferritin and remobilization from such stores. Different ...
The 52-nucleotide 5'-untranslated region of the human erythroid 5-aminolevulinate synthase mRNA contains a 28-nucleotide iron-responsive element-like stem-loop motif. We fused the 5'-untranslated region upstream to the coding sequence of the human growth h ...
The control of cellular iron homeostasis involves the coordinate post-transcriptional regulation of ferritin mRNA translation and transferring receptor mRNA stability. These regulatory events are mediated by a soluble cytoplasmic protein, iron regulatory f ...
Telomerase is composed of protein and RNA. The RNA serves as a template for telomere DNA synthesis and may also be important for enzyme structure or catalysis. We have used the presence of conserved sequence elements in the promoter and template regions to ...
Iron regulatory factor (IRF) is a cytoplasmic mRNA-binding protein that coordinates post-transcriptionally the expression of several important proteins in iron metabolism. Binding of IRF to iron-responsive elements (IRE) in the 5' untranslated region (UTR) ...
Iron regulatory factor (IRF) is a cytoplasmic RNA-binding protein involved in regulating iron homeostasis. IRF controls expression of ferritin and transferrin receptor post-transcriptionally via specific binding to stem-loop iron-responsive elements (IREs) ...
We describe a new procedure to identify RNA or DNA binding sites in proteins, based on a combination of UV cross-linking and single-hit chemical peptide cleavage. Site-directed mutagenesis is used to create a series of mutants with single Asn-Gly sequences ...
