Introducing Selenocysteine into Recombinant Proteins in Escherichia coli. Issue 2 (10th February 2021)

• Record Type: Journal Article
• Authors: Chung, Christina Z.; Miller, Corwin; Söll, Dieter; Krahn, Natalie
• Is Part Of: Current protocols. Volume 1:Issue 2(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-02-10
• Subjects: protein engineering -- selenocysteine -- selenoprotein -- synthetic biology -- translational recoding; Life sciences -- Laboratory manuals -- Periodicals; Biology -- Laboratory manuals -- Periodicals; Life sciences -- Technique -- Periodicals; Biology -- Technique -- Periodicals; 570.028
• DOI: 10.1002/cpz1.54
• Languages: English
• ISSNs: 2691-1299

Abstract

Abstract: Selenoproteins contain the 21st amino acid, selenocysteine. Selenocysteine is the only amino acid that is synthesized on its cognate tRNA, and it is inserted at specific recoded UGA stop codons via a complex translation system. Although highly similar to cysteine, selenocysteine has unique properties, including a stronger nucleophilic ability and lower reduction potential. Efforts to site‐specifically incorporate selenocysteine to create recombinant selenoproteins involve a recoded UAG stop codon and expression of the necessary selenocysteine translation machinery. This article presents a protocol for expressing and purifying selenoproteins in Escherichia coli . © 2021 Wiley Periodicals LLC. Basic Protocol : Recombinant selenoprotein production in E. coli using a rewired translation system