Skip to main content
Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1970 Feb;65(2):430–437. doi: 10.1073/pnas.65.2.430

Peptide Chain Termination, VI. Purification and Site of Action of S

J Goldstein 1, G Milman 1,*, E Scolnick 1, T Caskey 1
PMCID: PMC282921  PMID: 4905675

Abstract

Peptide chain termination is a result of at least two events: terminator codon recognition and hydrolysis of peptidyl tRNA. A protein factor S, isolated from the supernatant of Escherichia coli B, stimulates fMet release. Factor S lowers the Km for terminator trinucleotides without altering the Vmax of release and therefore acts at terminator codon recognition. The S protein differs from initiation factors, elongation factor G, several forms of elongation factor T and release factors. The importance of the 2% Tu content in purified S is unresolved.

Full text

PDF
430

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Caskey C. T., Tompkins R., Scolnick E., Caryk T., Nirenberg M. Sequential translation of trinucleotide codons for the initiation and termination of protein synthesis. Science. 1968 Oct 4;162(3849):135–138. doi: 10.1126/science.162.3849.135. [DOI] [PubMed] [Google Scholar]
  2. Iwasaki K., Sabol S., Wahba A. J., Ochoa S. Translation of the genetic message. VII. Role of initiation factors in formation of the chain initiation complex with Escherichia coli ribosomes. Arch Biochem Biophys. 1968 May;125(2):542–547. doi: 10.1016/0003-9861(68)90612-7. [DOI] [PubMed] [Google Scholar]
  3. LOWRY O. H., ROSEBROUGH N. J., FARR A. L., RANDALL R. J. Protein measurement with the Folin phenol reagent. J Biol Chem. 1951 Nov;193(1):265–275. [PubMed] [Google Scholar]
  4. Lengyel P., Söll D. Mechanism of protein biosynthesis. Bacteriol Rev. 1969 Jun;33(2):264–301. doi: 10.1128/br.33.2.264-301.1969. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Lipmann F. Polypeptide chain elongation in protein biosynthesis. Science. 1969 May 30;164(3883):1024–1031. doi: 10.1126/science.164.3883.1024. [DOI] [PubMed] [Google Scholar]
  6. Lucas-Lenard J., Lipmann F. Separation of three microbial amino acid polymerization factors. Proc Natl Acad Sci U S A. 1966 Jun;55(6):1562–1566. doi: 10.1073/pnas.55.6.1562. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Milman G., Goldstein J., Scolnick E., Caskey T. Peptide chain termination. 3. Stimulation of in vitro termination. Proc Natl Acad Sci U S A. 1969 May;63(1):183–190. doi: 10.1073/pnas.63.1.183. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Ravel J. M. Demonstration of a guanosine triphosphate-dependent enzymatic binding of aminoacyl-ribonucleic acid to Escherichia coli ribosomes. Proc Natl Acad Sci U S A. 1967 Jun;57(6):1811–1816. doi: 10.1073/pnas.57.6.1811. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Salas M., Hille M. B., Last J. A., Wahba A. J., Ochoa S. Translation of the genetic message, ii. Effect of initiation factors on the binding of formyl-methionyl-trna to ribosomes. Proc Natl Acad Sci U S A. 1967 Feb;57(2):387–394. doi: 10.1073/pnas.57.2.387. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Scolnick E. M., Caskey C. T. Peptide chain termination. V. The role of release factors in mRNA terminator codon recognition. Proc Natl Acad Sci U S A. 1969 Dec;64(4):1235–1241. doi: 10.1073/pnas.64.4.1235. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Scolnick E., Tompkins R., Caskey T., Nirenberg M. Release factors differing in specificity for terminator codons. Proc Natl Acad Sci U S A. 1968 Oct;61(2):768–774. doi: 10.1073/pnas.61.2.768. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Proceedings of the National Academy of Sciences of the United States of America are provided here courtesy of National Academy of Sciences

RESOURCES