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Beschreibung

Ferritin, mitochondrial (UniProt: Q8N4E7, also known as EC:1.16.3.1, FTMT) is encoded by the FTMT gene (Gene ID: 94033) in human. Mitochondria are shown to be the sites where iron is transformed into heme and Fe-S-clusters. Mitochondrial ferritin (FtMt), a novel H-type ferritin, with ferroxidase activity. It is a homooligomeric protein with 24 subunits that is synthesized with a transit peptide (aa 1-49) that is subsequently cleaved off in the mitochondrial matrix to produce the mature protein (aa 50-242). The functional molecule is roughly spherical and contains a central cavity into which the polymeric mineral iron core is deposited. It stores iron in a soluble, non-toxic, readily available form. It is detected in testis and erythroleukemia and is also expressed in very low levels in the brain and other tissues. FtMt levels appear to correlate more with mitochondrial abundance than with iron metabolism. Higher levels of FtMt are reported in the cerebral cortex of Alzheimer s disease patients and in the substantia nigra of subjects with Parkinson s disease. Although FtMt exhibits about 79% homology to H-chain ferritin (FTH), Clone C65-2 specifically recognize only the FtMt and does not react with FTH. (Ref.: Yang, M., et al. (2017). Acta Histochem. Cytochem. 50(1), 49-55, Yang, H., et al. (2013). Neurosci. Res. 77(1-2), 1-7).