Ferritin is one of the above non-haem adamant accumulator proteins in animals, plants, and microorganisms. It is a multisubunit protein with a alveolate interior, which contains a mineral amount of hydrated adamant oxide, thereby ensuring its solubility in an aqueous environment. Each subunit consists of a closed, four-helical array with a awkward aberration and one crossover connection.
This access represents the ferritin-like superfamily. Proteins with this anatomy cover ferritin and added ferritin-like proteins such as bacterioferritin (cytochrome b1) that binds haem amid two subunits, non-haem ferritin, dodecameric ferritin homologue (DPS) that binds to and protects DNA, and the N-terminal area of rubrerythrin that is begin in abounding air-sensitive bacilli and archaea . In addition, ribonucleotide reductase-like proteins appearance a agnate anatomy to the ferritin-like fold; these di-iron carboxylate proteins aggregate a assorted chic of non-haem adamant enzymes assuming a aggregation of redox reactions. The superfamily aswell includes the alpha and beta subunits of methane monooxygenase hydrolase, basin 9-stearoyl-acyl carrier protein desaturase and manganese catalase.