Structure and activity of particulate methane monooxygenase arrays in methanotrophs.
Structure and activity of particulate methane monooxygenase arrays in methanotrophs.
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DOI:
10.1038/s41467-022-32752-9
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发表时间:
2022-09-05
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Methane-oxidizing bacteria play a central role in greenhouse gas mitigation and have potential applications in biomanufacturing. Their primary metabolic enzyme, particulate methane monooxygenase (pMMO), is housed in copper-induced intracytoplasmic membranes (ICMs), of which the function and biogenesis are not known. We show by serial cryo-focused ion beam (cryoFIB) milling/scanning electron microscope (SEM) volume imaging and lamellae-based cellular cryo-electron tomography (cryoET) that these ICMs are derived from the inner cell membrane. The pMMO trimer, resolved by cryoET and subtomogram averaging to 4.8 Å in the ICM, forms higher-order hexagonal arrays in intact cells. Array formation correlates with increased enzymatic activity, highlighting the importance of studying the enzyme in its native environment. These findings also demonstrate the power of cryoET to structurally characterize native membrane enzymes in the cellular context. Particulate methane monooxygenase (pMMO) is the main enzyme used by methanotrophs. Here, the authors determined the native structure of pMMO by cryo-electron tomography, revealing lipid-stabilized features and a higher-order hexagonal array arrangement in intact cells.
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影响因子:
16.8
作者:
Li Z;Li W;Lu M;Bess J Jr;Chao CW;Gorman J;Terry DS;Zhang B;Zhou T;Blanchard SC;Kwong PD;Lifson JD;Mothes W;Liu J
通讯作者:
Liu J
DOI:
10.1039/c5mt00289c
发表时间:
2016-09-01
期刊:
Metallomics : integrated biometal science
影响因子:
--
作者:
Kenney GE;Sadek M;Rosenzweig AC
通讯作者:
Rosenzweig AC
影响因子:
46.2
作者:
Koo CW ;Rosenzweig AC
通讯作者:
Rosenzweig AC
DOI:
10.1007/s00775-018-1604-2
发表时间:
2018-10
期刊:
Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry
影响因子:
--
作者:
Deng YW;Ro SY;Rosenzweig AC
通讯作者:
Rosenzweig AC
影响因子:
15
作者:
Martinho, Marlene;Choi, Dong W.;Muenck, Eckard
通讯作者:
Muenck, Eckard