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Fatima K, Naqvi F, Younas H. A Review: Molecular Chaperone-mediated Folding, Unfolding and Disaggregation of Expressed Recombinant Proteins. Cell Biochem Biophys 2021; 79:153-174. [PMID: 33634426 DOI: 10.1007/s12013-021-00970-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 02/01/2021] [Indexed: 12/26/2022]
Abstract
The advancements in biotechnology over time have led to an increase in the demand of pure, soluble and functionally active proteins. Recombinant protein production has thus been employed to obtain high expression of purified proteins in bulk. E. coli is considered as the most desirable host for recombinant protein production due to its inexpensive and fast cultivation, simple nutritional requirements and known genetics. Despite all these benefits, recombinant protein production often comes with drawbacks, such as, the most common being the formation of inclusion bodies due to improper protein folding. Consequently, this can lead to the loss of the structure-function relationship of a protein. Apart from various strategies, one major strategy to resolve this issue is the use of molecular chaperones that act as folding modulators for proteins. Molecular chaperones assist newly synthesized, aggregated or misfolded proteins to fold into their native conformations. Chaperones have been widely used to improve the expression of various proteins which are otherwise difficult to produce in E. coli. Here, we discuss the structure, function, and role of major E. coli molecular chaperones in recombinant technology such as trigger factor, GroEL, DnaK and ClpB.
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Affiliation(s)
- Komal Fatima
- Department of Biochemistry, Kinnaird College for Women, Lahore, Punjab, Pakistan
| | - Fatima Naqvi
- Department of Biochemistry, Kinnaird College for Women, Lahore, Punjab, Pakistan
| | - Hooria Younas
- Department of Biochemistry, Kinnaird College for Women, Lahore, Punjab, Pakistan.
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Du J, Chen L, Zeng X, Yu S, Zhou W, Tan L, Dong L, Zhou C, Cheng J. Hard-and-Soft Integration Strategy for Preparation of Exceptionally Stable Zr(Hf)-UiO-66 via Thiol-Ene Click Chemistry. ACS APPLIED MATERIALS & INTERFACES 2020; 12:28576-28585. [PMID: 32515180 DOI: 10.1021/acsami.0c10368] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
UiO-66 metal-organic frameworks (MOFs) are unstable in some harsh aqueous environments, which limit their practical applications. We demonstrate a postsynthetic modification methodology to transform hydrophilic Zr(Hf)-UiO-66 into superhydrophobic Zr(Hf)-UiO-66-SH-y (SH = thiol, y = fluoroalkyl) by introducing long fluoroalkyl chains into organic linkers through a thiol-ene click reaction. Water contact angles of the four modified UiO-66 MOFs are all larger than 150°. The grafted low-surface-energy fluorine-containing groups become an effective protective shield for the MOFs, making them exhibit remarkable stability in extreme conditions such as alkaline (pH = 12), saturated HCl, and high concentration of NaCl solution (20 wt %). The Zr-UiO-66 MOFs grafted with 1H,1H,2H-perfluoro-1-hexene have high CO2 adsorption contents of 1.54 and 2.88 mmol·g-1 at 298 and 273 K, respectively. Moreover, the superhydrophobic MOFs also showed potential application in oil/water separation.
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Affiliation(s)
- Jingcheng Du
- School of Chemistry and Chemical Engineering, Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education, National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction, Chongqing University, Chongqing 400044, PR China
| | - Li Chen
- School of Chemistry and Chemical Engineering, Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education, National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction, Chongqing University, Chongqing 400044, PR China
| | - Xinjuan Zeng
- School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, PR China
| | - Shuai Yu
- Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, PR China
| | - Wei Zhou
- School of Chemistry and Chemical Engineering, Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education, National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction, Chongqing University, Chongqing 400044, PR China
| | - Luxi Tan
- School of Chemistry and Chemical Engineering, Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education, National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction, Chongqing University, Chongqing 400044, PR China
| | - Lichun Dong
- School of Chemistry and Chemical Engineering, Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education, National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction, Chongqing University, Chongqing 400044, PR China
| | - Cailong Zhou
- School of Chemistry and Chemical Engineering, Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education, National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction, Chongqing University, Chongqing 400044, PR China
| | - Jiang Cheng
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, PR China
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