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Web of Science [v.5.25.1] - Web of Science Core Collection Full Record
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`8/21/2017
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`Oxidative renaturation of lysozyme at high concentrations
`
`Citation Network
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`By: Hevehan, DL (Hevehan, DL); Clark, ED (Clark, ED)
`
`BIOTECHNOLOGY AND BIOENGINEERING
`Volume:  54  Issue:  3  Pages:  221­230
`DOI:  10.1002/(SICI)1097­0290(19970505)54:3<221::AID­BIT3>3.0.CO;2­H
`Published:  MAY 5 1997
`View Journal Impact
`
`Abstract
`Newly synthesized cloned gene proteins expressed in bacteria frequently accumulate in insoluble
`aggregates or inclusion bodies. Active protein can be recovered by solubilization of inclusion bodies
`followed by renaturation of the solubilized (unfolded) protein. The recovery of active protein is highly
`dependent on the renaturation conditions chosen. The renaturation process is generally conducted at
`low protein concentrations (0.01­0.2 mg/mL) to avoid aggregation. We have investigated the potential of
`successfully refolding reduced and denatured hen egg white lysozyme at high concentrations (1 and 5
`mg/mL). By varying the composition of the renaturation media, optimum conditions which kinetically
`favor proper folding over inactivation were found. Solubilizing agents such as guanidinium chloride
`(GdmCI) and folding aids such as L­arginine present in low concentrations during refolding effectively
`enhanced renaturation yields by suppressing aggregation resulting in reactivation yields as high as
`95%. Quantitatively the kinetic competition between lysozyme folding and aggregation can be
`described using first­order kinetics for the renaturation reaction and third­order kinetics for the overall
`aggregation pathway. The rate constants for both reactions have been found to be strongly dependent
`on denaturant and thiol concentration. This strategy supercedes the necessity to reactivate proteins at
`low concentrations using large renaturation volumes. The marked increase in volumetric productivity
`makes this a viable option for recovering biologically active protein efficiently and in high yield in vitro
`from proteins produced as inclusion bodies within microbial cells, (C) 1997 John Wiley & Sons, Inc.
`
`Keywords
`Author Keywords: lysozyme; protein renaturation; protein folding kinetics; folding additives
`KeyWords Plus: COLI INCLUSION­BODIES; ESCHERICHIA­COLI; GUANIDINE­HYDROCHLORIDE;
`REDUCED LYSOZYME; AGGREGATION; PROTEINS; PURIFICATION; RECONSTITUTION;
`REACTIVATION; COMPETITION
`
`Author Information
`Addresses:
`
`[ 1 ] TUFTS UNIV,DEPT CHEM ENGN,MEDFORD,MA 02155
`
`Publisher
`JOHN WILEY & SONS INC, 605 THIRD AVE, NEW YORK, NY 10158­0012
`
`Categories / Classification
`Research Areas: Biotechnology & Applied Microbiology
`Web of Science Categories: Biotechnology & Applied Microbiology
`
`185 Times Cited
`31 Cited References
`View Related Records
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`(data from Web of Science Core Collection)
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`All Times Cited Counts
`200 in All Databases
`185 in Web of Science Core Collection
`151 in BIOSIS Citation Index
`20 in Chinese Science Citation
`Database
`0 in Data Citation Index
`0 in Russian Science Citation Index
`0 in SciELO Citation Index
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`Usage Count
`Last 180 Days: 3
`Since 2013: 26
`Learn more
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`Most Recent Citation
`
`Yamamoto, Etsushi. Protein refolding
`is improved by adding nonionic
`polyethylene glycol monooleyl ethers
`with various polyethylene glycol
`lengths . BIOTECHNOLOGY
`JOURNAL, MAY 2017.
`
`View All
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`This record is from:
`Web of Science Core Collection
`­ Science Citation Index Expanded
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`Document Information
`Document Type: Article
`http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=2BhT15mQSuFojmwCUKH&page=1&doc=9
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`1/2
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`APOTEX EX1062
`Apotex Inc., et al. v. Amgen Inc. et al., IPR2016-01542
`Page 1
`
`

`

`8/21/2017
`Language: English
`Accession Number:  WOS:A1997WU88300003
`PubMed ID:  18634088
`ISSN:  0006­3592
`
`Web of Science [v.5.25.1] - Web of Science Core Collection Full Record
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`Journal Information
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`Impact Factor:  Journal Citation Reports
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`Other Information
`IDS Number:  WU883
`Cited References in Web of Science Core Collection:  31
`Times Cited in Web of Science Core Collection:  185
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` 9  of  10 
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`http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=2BhT15mQSuFojmwCUKH&page=1&doc=9
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`2/2
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`APOTEX EX1062
`Apotex Inc., et al. v. Amgen Inc. et al., IPR2016-01542
`Page 2
`
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