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Iron-responsive element-binding protein (IRE-BP) binds to these mRNA sequences. On its own, the IRE-BP binds to the IREs of ferritin and transferrin receptor mRNA. But, when iron binds to the IRE-BP, the IRE-BP changes shape with the result that the IRE-BPs can no longer bind the ferritin mRNA.
Crystal structure of iron regulatory protein 1 in complex with ferritin H IRE-RNA, Protein Data Bank entry 2IPY. [1]In molecular biology, the iron response element or iron-responsive element (IRE) is a short conserved stem-loop which is bound by iron response proteins (IRPs, also named IRE-BP or IRBP).
The specific regulator protein, the IRE-BP, binds to IREs in both 5' and 3' regions, but only to RNA in the apo form, without the Fe-S cluster. Expression of IRE-BP in cultured cells has revealed that the protein functions either as an active aconitase, when cells are iron-replete, or as an active RNA-binding protein, when cells are iron-depleted.
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Iron-binding proteins are carrier proteins and metalloproteins that are important in iron metabolism [1] and the immune response. [2] [3] Iron is required for life.Iron-dependent enzymes catalyze a variety of biochemical reactions and can be divided into three broad classes depending on the structure of their active site: non-heme mono-iron, non-heme diiron , or heme centers. [4]
73649 Ensembl ENSG00000071967 ENSMUSG00000027015 UniProt Q53TN4 Q925G2 RefSeq (mRNA) NM_024843 NM_001127383 NM_001256909 NM_028593 RefSeq (protein) NP_001120855 NP_001243838 NP_079119 NP_082869 Location (UCSC) Chr 2: 171.52 – 171.56 Mb Chr 2: 70.95 – 70.97 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Duodenal cytochrome B (Dcytb) also known as cytochrome b reductase 1 is an ...
It is the primary intracellular iron-storage protein in both prokaryotes and eukaryotes, keeping iron in a soluble and non-toxic form. In humans, it acts as a buffer against iron deficiency and iron overload. [3] Ferritin is found in most tissues as a cytosolic protein, but small amounts are secreted into the serum where it functions as an iron ...
It is thought that this protein functions to regulate circulating iron uptake by regulating the interaction of the transferrin receptor with transferrin. [6] The HFE gene contains 7 exons spanning 12 kb. [7] The full-length transcript represents 6 exons. [8] HFE protein is composed of 343 amino acids. There are several components, in sequence ...