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-Structure paper
| タイトル | Unveiling Structural Heterogeneity and Evolutionary Adaptations of Heteromultimeric Bacterioferritin Nanocages. |
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| ジャーナル・号・ページ | Adv Sci (Weinh), Vol. 12, Issue 20, Page e2409957, Year 2025 |
| 掲載日 | 2025年4月1日 |
著者 | Yingxi Li / Weiwei Wang / Wei Wang / Xing Zhang / Jinghua Chen / Haichun Gao / ![]() |
| PubMed 要旨 | Iron-storage bacterioferritins (Bfrs), existing in either homo- or hetero-multimeric form, play a crucial role in iron homeostasis. While the structure and function of homo-multimeric ...Iron-storage bacterioferritins (Bfrs), existing in either homo- or hetero-multimeric form, play a crucial role in iron homeostasis. While the structure and function of homo-multimeric bacterioferritins (homo-Bfrs) have been extensively studied, little is known about the assembly, distinctive characteristics, or evolutionary adaptations of hetero-multimeric bacterioferritins (hetero-Bfrs). Here, the cryo-EM structure and functional characterization of a bacterial hetero-Bfr (SoBfr12) are reported. Compared to homo-Bfrs, although SoBfr12 exhibits a conserved spherical cage-like dodecahedron, its pores through which ions traverse exhibit substantially increased diversity. Importantly, the heterogeneity has significant impacts on sites for ion entry, iron oxidation, and reduction. Moreover, evolutionary analyses reveal that hetero-Bfrs may represent a new class within the Bfr subfamily, consisting of two different types that may have evolved from homo-Bfr through tandem duplication and directly from ferritin (Ftn) via dispersed duplication, respectively. These results reveal remarkable structural and functional features of a hetero-Bfr, enabling the rational design of nanocages for enhanced iron-storing efficiency and for other specific purposes, such as drug delivery vehicles and nanozymes. |
リンク | Adv Sci (Weinh) / PubMed:40167232 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.6 Å |
| 構造データ | EMDB-60594, PDB-9iig: |
| 化合物 | ![]() ChemComp-NA: ![]() ChemComp-HEM: |
| 由来 |
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キーワード | OXIDOREDUCTASE / 24-mer bacterioferritin / metal transport / heme-binding protein |
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shewanella oneidensis mr-1 (バクテリア)
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