1lb3 Citations

Structural description of the active sites of mouse L-chain ferritin at 1.2 A resolution.

Abstract

The first ferritin structure refined at the atomic level has been achieved on recombinant mouse L-chain apoferritin (rMoLF) crystals. These latter diffract to 1.2 A resolution under cryogenic conditions. When cryo-cooling the sample, the thermal disorder usually observed at room temperature is reduced and the low-temperature structure reveals several details concerning the protein putative active sites and their properties. Within the pores built up by the molecular three-fold symmetry axes, the iron entry route to the ferritin cavity, residues H118, D131 and E134, exhibit alternate conformations associated with the binding of partially hydrated cadmium ions, a metal used as a crystallization agent. At the mineral ferrihydrite nucleation center, the electron density maps evidence the orientation of E57, E60, E61 and E64 glutamate side chains (whereas they were observed highly disordered in previous ferritin structures determined at room temperature) and allow a description of the site taking into account the binding geometry of four Cd(2+) ions. Moreover, the side chain of residue K140, lying in the vicinity of the ferrihydrite nucleation center, is shown to interact with residue E61. As previously highlighted, this observation confirms the importance of K140 in the rMoLF sequence, as being responsible for the low level of iron incorporation by mousel L-chain ferritin compared to human L-chain ferritin. Finally, the diffusion of small molecules within the ferritin cavity is illustrated here by the presence of ordered molecules of glycerol used as a cryo-protectant, which bind the inner cavity surface of the protein.

Articles - 1lb3 mentioned but not cited (7)

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Reviews citing this publication (7)

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Articles citing this publication (21)

  1. Crystal structure and biochemical properties of the human mitochondrial ferritin and its mutant Ser144Ala. Langlois d'Estaintot B, Santambrogio P, Granier T, Gallois B, Chevalier JM, Précigoux G, Levi S, Arosio P. J Mol Biol 340 277-293 (2004)
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  5. Ferritin reactions: direct identification of the site for the diferric peroxide reaction intermediate. Liu X, Theil EC. Proc Natl Acad Sci U S A 101 8557-8562 (2004)
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  9. Chemistry at the protein-mineral interface in L-ferritin assists the assembly of a functional (μ3-oxo)Tris[(μ2-peroxo)] triiron(III) cluster. Pozzi C, Ciambellotti S, Bernacchioni C, Di Pisa F, Mangani S, Turano P. Proc Natl Acad Sci U S A 114 2580-2585 (2017)
  10. Structural analysis of haemin demetallation by L-chain apoferritins. de Val N, Declercq JP, Lim CK, Crichton RR. J Inorg Biochem 112 77-84 (2012)
  11. Fe(2+) substrate transport through ferritin protein cage ion channels influences enzyme activity and biomineralization. Behera RK, Torres R, Tosha T, Bradley JM, Goulding CW, Theil EC. J Biol Inorg Chem 20 957-969 (2015)
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  13. Orally delivered sour cherry seed extract (SCSE) affects cardiovascular and hematological parameters in humans. Csiki Z, Papp-Bata A, Czompa A, Nagy A, Bak I, Lekli I, Javor A, Haines DD, Balla G, Tosaki A. Phytother Res 29 444-449 (2015)
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  15. Ferritin enhances salsolinol-mediated DNA strand breakage: protection by carnosine and related compounds. Kang JH. Toxicol Lett 188 20-25 (2009)
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  17. Hematoma Resolution In Vivo Is Directed by Activating Transcription Factor 1. Seneviratne A, Han Y, Wong E, Walter ERH, Jiang L, Cave L, Long NJ, Carling D, Mason JC, Haskard DO, Boyle JJ. Circ Res 127 928-944 (2020)
  18. Cloning, purification and preliminary X-ray crystallographic analysis of a hypothetical protein, MJ0754, from Methanococcus jannaschii DSM 2661. Lee EH, Nam KH, Hwang KY. Acta Crystallogr Sect F Struct Biol Cryst Commun 65 1065-1067 (2009)
  19. Defining the mobility range of a hinge-type connection using molecular dynamics and metadynamics. Horx P, Geyer A. PLoS One 15 e0230962 (2020)
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  21. Capturing and Stabilizing Folded Proteins in Lattices Formed with Branched Oligonucleotide Hybrids. Schwenger A, Jurkowski TP, Richert C. Chembiochem 19 1523-1530 (2018)