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The first crystal structure of crustacean ferritin that is a hybrid type of H and L ferritinThe first crystal structure of crustacean ferritin that is a hybrid type of H and L ferritin
Structural highlights
FunctionT2B7E1_PENJP Stores iron in a soluble, non-toxic, readily available form. Important for iron homeostasis. Iron is taken up in the ferrous form and deposited as ferric hydroxides after oxidation.[RuleBase:RU361145] Publication Abstract from PubMedFerritin, a ubiquitous iron storage protein, has a crucial role in innate immunity in arthropods, which have no adaptive immune system. Arthropods are thought to have two types of ferritin molecules: the secreted type and the cytosolic type. Here, we present the first crystal structure of ferritin from crustacean, kuruma prawn (Marsupenaeus japonicus), at 1.16 A resolution. This shrimp ferritin (MjFer) is the cytosolic type, and its structure shows well-conserved ferritin fold composed of a 4-helix bundle that assembles into a cage-like 24-mer. The structure of MjFer was more similar to those of human and vertebrate ferritins than to that of the secreted-type arthropod ferritin from an insect. MjFer possesses both a ferroxidase site and a nucleation site, which are main characteristics of vertebrate H and L chain ferritins, respectively. The first crystal structure of crustacean ferritin, MjFer, has exceptionally high quality that provides the detailed structural information of metal moving pathway in ferritin. This article is protected by copyright. All rights reserved. The first crystal structure of crustacean ferritin that is a hybrid type of H and L ferritin.,Masuda T, Zang J, Zhao G, Mikami B Protein Sci. 2018 Aug 11. doi: 10.1002/pro.3495. PMID:30099791[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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