ArticleProceedings of the National Academy of Sciences of the United States of America2007
Pyrrolysine is not hardwired for cotranslational insertion at UAG codons.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 85 papers.
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Who cites it
85 citing papers in PubMed, 130 citations in OpenAlex.
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- Expanding the genetic code: In vivo approaches for incorporating non-proteinogenic monomers.Journal of microbiology (Seoul, Korea) · 2025Review
- Genetic Code Expansion: Recent Developments and Emerging Applications.Chemical reviews · 2025Review
- Pyrrolysine Aminoacyl-tRNA Synthetase as a Tool for Expanding the Genetic Code.International journal of molecular sciences · 2025Review
- Noncanonical Amino Acid Tools and Their Application to Membrane Protein Studies.Chemical reviews · 2024Review
- Engineering Pyrrolysine Systems for Genetic Code Expansion and Reprogramming.Chemical reviews · 2024Review
- Cracking the Code: Reprogramming the Genetic Script in Prokaryotes and Eukaryotes to Harness the Power of Noncanonical Amino Acids.Chemical reviews · 2024Review
- A Translation-Independent Directed Evolution Strategy to Engineer Aminoacyl-tRNA Synthetases.ACS central science · 2024Article
- Engineering tRNAs for the Ribosomal Translation of Non-proteinogenic Monomers.Chemical reviews · 2024Review
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- Site-specific photo-crosslinking/cleavage for protein-protein interface identification reveals oligomeric assembly of lysosomal-associated membrane protein type 2A in mammalian cells.Protein science : a publication of the Protein Society · 2023Article
- Xeno Amino Acids: A Look into Biochemistry as We Do Not Know It.Life (Basel, Switzerland) · 2023Review
- Dual stop codon suppression in mammalian cells with genomically integrated genetic code expansion machinery.Cell reports methods · 2023Article
- Quintuply orthogonal pyrrolysyl-tRNA synthetase/tRNANature chemistry · 2023Article
- Site-specific dual encoding and labeling of proteins via genetic code expansion.Cell chemical biology · 2023Review
- Crystal Structure of Pyrrolysyl-tRNA Synthetase from a Methanogenic Archaeon ISO4-G1 and Its Structure-Based Engineering for Highly-Productive Cell-Free Genetic Code Expansion with Non-Canonical Amino Acids.International journal of molecular sciences · 2023Article
25 more citing papers are in PubMed but not listed here.
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
Pyrrolysine (Pyl), the 22nd naturally encoded amino acid, gets acylated to its distinctive UAG suppressor tRNA(Pyl) by the cognate pyrrolysyl-tRNA synthetase (PylRS). Here we determine the RNA elements required for recognition and aminoacylation of tRNA(Pyl) in vivo by using the Pyl analog N-epsilon-cyclopentyloxycarbonyl-l-lysine. Forty-two Methanosarcina barkeri tRNA(Pyl) variants were tested in Escherichia coli for suppression of the lac amber A24 mutation; then relevant tRNA(Pyl) mutants were selected to determine in vivo binding to M. barkeri PylRS in a yeast three-hybrid system and to measure in vitro tRNA(Pyl) aminoacylation. tRNA(Pyl) identity elements include the discriminator base, the first base pair of the acceptor stem, the T-stem base pair G51:C63, and the anticodon flanking nucleotides U33 and A37. Transplantation of the tRNA(Pyl) identity elements into the mitochondrial bovine tRNA(Ser) scaffold yielded chimeric tRNAs active both in vitro and in vivo. Because the anticodon is not important for PylRS recognition, a tRNA(Pyl) variant could be constructed that efficiently suppressed the lac opal U4 mutation in E. coli. These data suggest that tRNA(Pyl) variants may decode numerous codons and that tRNA(Pyl):PylRS is a fine orthogonal tRNA:synthetase pair that facilitated the late addition of Pyl to the genetic code.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.