7emm | pdb_00007emm
Crystal structure of IrCp* immobilized apo-R52H-rHLFr
Structural highlights
FunctionFRIL_HORSE 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. Also plays a role in delivery of iron to cells. Mediates iron uptake in capsule cells of the developing kidney (By similarity). Publication Abstract from PubMedThe effect of the mutation at the core of the ferritin nanocage (apo-rHLFr) on the uptake of IrCp* has been investigated by structural and spectroscopic methods. Site-specific mutations of two polar residues viz., Asp38 and Arg52 were investigated. The uptake of IrCp* was increased by about 1.5-fold on mutation of Arg52 by His compared to the wild-type variant, while mutation of Asp38 by His had no effect on the uptake. All the variants of the Ir-embedded ferritin cages remained as stable as the wild-type analogue. These hybrid bio-nanocages of ferritin were found to efficiently catalyze transfer hydrogenation of various substituted acetophenones forming the corresponding chiral alcohols with up to 88 % conversion and 70 % enantioselectivity. An electron-withdrawing substituent on the reactant enhanced the Turnover frequency of the reaction. Molecular docking analyses suggested that the substrate binds in different orientations at the active site in different mutants of the nanocage. Controlled Uptake of an Iridium Complex inside Engineered apo-Ferritin Nanocages: Study of Structure and Catalysis.,Taher M, Maity B, Nakane T, Abe S, Ueno T, Mazumdar S Angew Chem Int Ed Engl. 2022 Jan 10:e202116623. doi: 10.1002/anie.202116623. PMID:35005820[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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