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-Structure paper
タイトル | Structural basis of enzyme encapsulation into a bacterial nanocompartment. |
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ジャーナル・号・ページ | Nat Struct Mol Biol, Vol. 15, Issue 9, Page 939-947, Year 2008 |
掲載日 | 2009年2月19日 |
著者 | Markus Sutter / Daniel Boehringer / Sascha Gutmann / Susanne Günther / David Prangishvili / Martin J Loessner / Karl O Stetter / Eilika Weber-Ban / Nenad Ban / |
PubMed 要旨 | Compartmentalization is an important organizational feature of life. It occurs at varying levels of complexity ranging from eukaryotic organelles and the bacterial microcompartments, to the molecular ...Compartmentalization is an important organizational feature of life. It occurs at varying levels of complexity ranging from eukaryotic organelles and the bacterial microcompartments, to the molecular reaction chambers formed by enzyme assemblies. The structural basis of enzyme encapsulation in molecular compartments is poorly understood. Here we show, using X-ray crystallographic, biochemical and EM experiments, that a widespread family of conserved bacterial proteins, the linocin-like proteins, form large assemblies that function as a minimal compartment to package enzymes. We refer to this shell-forming protein as 'encapsulin'. The crystal structure of such a particle from Thermotoga maritima determined at 3.1-angstroms resolution reveals that 60 copies of the monomer assemble into a thin, icosahedral shell with a diameter of 240 angstroms. The interior of this nanocompartment is lined with conserved binding sites for short polypeptide tags present as C-terminal extensions of enzymes involved in oxidative-stress response. |
リンク | Nat Struct Mol Biol / PubMed:19172747 |
手法 | EM (単粒子) / X線回折 |
解像度 | 3.104 - 16.0 Å |
構造データ | EMDB-1530: PDB-3dkt: |
化合物 | ChemComp-HOH: |
由来 |
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キーワード | STRUCTURAL PROTEIN/VIRUS LIKE PARTICLE (構造) / enzyme encapsulation / nanocompartment / oxidative stress (酸化ストレス) / ferritin-like protein / hk97-fold / Antibiotic (抗生物質) / Antimicrobial / Bacteriocin (バクテリオシン) / Cobalt (コバルト) / Hydrolase (加水分解酵素) / Protease (プロテアーゼ) / Secreted (分泌) / STRUCTURAL PROTEIN-VIRUS LIKE PARTICLE COMPLEX (構造) |