Self-Assembly Stability and Variability of Bacterial Microcompartment Shell Proteins in Response to the Environmental Change
| العنوان: | Self-Assembly Stability and Variability of Bacterial Microcompartment Shell Proteins in Response to the Environmental Change |
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| المؤلفون: | Faulkner, matthew, Zhao, longsheng, Barrett, steve, Liu, L |
| المصدر: | Nanoscale Research Letters Nanoscale Research Letters, Vol 14, Iss 1, Pp 1-8 (2019) NANOSCALE RESEARCH LETTERS |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Nano Express, High-speed atomic force microscopy, lcsh:TA401-492, Synthetic engineering, lcsh:Materials of engineering and construction. Mechanics of materials, Protein dynamics, Self-assembly, Bacterial microcompartment |
| الوصف: | Bacterial microcompartments (BMCs) are proteinaceous self-assembling organelles that are widespread among the prokaryotic kingdom. By segmenting key metabolic enzymes and pathways using a polyhedral shell, BMCs play essential roles in carbon assimilation, pathogenesis, and microbial ecology. The BMC shell is composed of multiple protein homologs that self-assemble to form the defined architecture. There is tremendous interest in engineering BMCs to develop new nanobioreactors and molecular scaffolds. Here, we report the quantitative characterization of the formation and self-assembly dynamics of BMC shell proteins under varying pH and salt conditions using high-speed atomic force microscopy (HS-AFM). We show that 400-mM salt concentration is prone to result in larger single-layered shell patches formed by shell hexamers, and a higher dynamic rate of hexamer self-assembly was observed at neutral pH. We also visualize the variability of shell proteins from hexameric assemblies to fiber-like arrays. This study advances our knowledge about the stability and variability of BMC protein self-assemblies in response to microenvironmental changes, which will inform rational design and construction of synthetic BMC structures with the capacity of remodeling their self-assembly and structural robustness. It also offers a powerful toolbox for quantitatively assessing the self-assembly and formation of BMC-based nanostructures in biotechnology applications. Electronic supplementary material The online version of this article (10.1186/s11671-019-2884-3) contains supplementary material, which is available to authorized users. |
| وصف الملف: | application/pdf |
| تدمد: | 1931-7573 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::6b4a35c39dbcb1d320494778e006a960 https://pubmed.ncbi.nlm.nih.gov/30747342 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.pmid.dedup....6b4a35c39dbcb1d320494778e006a960 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19317573 |
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