WebElution of IRE-BP was accom- plished with 1M KCI, 5 mg of sodium heparin per milliliter, 25 mM tris-CI, pH 8, and 1% Triton X- 100. Based on recovery of IRE-binding activity and the recovery of labeled K562 protein from a parallel experiment with a [35S]methionine lysate, we esti- mate that the IRE-binding protein was purified WebNov 16, 2005 · IREs are regulatory elements that encode a phylogenetically defined sequence-structure motif that provide a specific recognization site for the IRE-binding proteins (IRE-BP1 or IRE-BP2). Iron starvation of cells induces high affinity binding of cytoplasmic IRE-BP to an IRE, which has at least two distinct known biological …
Iron-Responsive Element-Binding Protein - an overview
WebMay 15, 1992 · The iron-responsive element-binding protein (IRE-BP) is an RNA-binding protein that regulates the expression of several mRNAs in response to availability of … WebThe iron-responsive element binding protein (IRE- BP) is a cytosolic protein that binds a highly conserved sequence in the untranslated regions of mRNAs in- volved in iron metabolism including ferritin, transfer- rin receptor, and erythroid 6-aminolevulinate acid synthase. This conserved sequence is termed the iron- lavavajilla zanussi
Modulation of the RNA-binding activity of a regulatory protein by …
WebWhich of the following would ONLY be found in a cell in which the RNA binding domain of IRE-BP has been mutated so that it can no longer bind IRES? ferritin protein in low iron transferrin mRNA in low iron ferritin protein in high iron transferrin mRNA in high iron . Previous question Next question. COMPANY. WebOct 1, 1993 · The amounts of IRE-BP in normal leukocytes and leukemic cells in terms of milligrams of protein (U/mg protein). Bars indicate mean -+ S.E., p < 0.001, normal granulocytes vs CML cells in the chronic phase and AML cells andp < 0.01, CML cells in the chronic phase vs AML cells. WebThe synthesis of ferritin subunits is regulated at the translational level by iron through interaction with the cytoplasmic IRP or IRE-binding protein. As discussed above, the IRE is a conserved nucleotide motif present in the 5′ noncoding region of all ferritin mRNAs. lavavajillas 3vf302np