8U51

Klebsiella pneumoniae SUMO-loaded encapsulin shell

8U51 の概要

• エントリーDOI: 10.2210/pdb8u51/pdb
• EMDBエントリー: 41906
• 分子名称: Klebsiella pneumoniae family 1 encapsulin shell, SUMO-targeting peptide fusion protein (2 entities in total)
• 機能のキーワード: encapsulin, nanocompartment, sumo, targeting peptide, virus like particle
• 由来する生物種: Klebsiella pneumoniae; 詳細
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 29817.24

構造登録者

Andreas, M.P.,Jones, J.A.,Giessen, T.W. (登録日: 2023-09-11, 公開日: 2024-04-24)

主引用文献

Jones, J.A.,Andreas, M.P.,Giessen, T.W.
Structural basis for peroxidase encapsulation inside the encapsulin from the Gram-negative pathogen Klebsiella pneumoniae.
Nat Commun, 15:2558-2558, 2024

PubMed Abstract: Encapsulins are self-assembling protein nanocompartments capable of selectively encapsulating dedicated cargo proteins, including enzymes involved in iron storage, sulfur metabolism, and stress resistance. They represent a unique compartmentalization strategy used by many pathogens to facilitate specialized metabolic capabilities. Encapsulation is mediated by specific cargo protein motifs known as targeting peptides (TPs), though the structural basis for encapsulation of the largest encapsulin cargo class, dye-decolorizing peroxidases (DyPs), is currently unknown. Here, we characterize a DyP-containing encapsulin from the enterobacterial pathogen Klebsiella pneumoniae. By combining cryo-electron microscopy with TP and TP-binding site mutagenesis, we elucidate the molecular basis for cargo encapsulation. TP binding is mediated by cooperative hydrophobic and ionic interactions as well as shape complementarity. Our results expand the molecular understanding of enzyme encapsulation inside protein nanocompartments and lay the foundation for rationally modulating encapsulin cargo loading for biomedical and biotechnological applications.

PubMed: 38519509
DOI: 10.1038/s41467-024-46880-x

実験手法

ELECTRON MICROSCOPY (2.41 Å)