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Imai H, Miyoshi T, Murakami R, Ito K, Ishino Y, Uchiumi T. Functional role of the C-terminal tail of the archaeal ribosomal stalk in recruitment of two elongation factors to the sarcin/ricin loop of 23S rRNA. Genes Cells 2015; 20:613-24. [DOI: 10.1111/gtc.12256] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 04/27/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Hirotatsu Imai
- Department of Biology; Faculty of Science; Niigata University; 8050 Ikarashi 2-no-cho Nishi-ku Niigata 950-2181 Japan
| | - Tomohiro Miyoshi
- Department of Biology; Faculty of Science; Niigata University; 8050 Ikarashi 2-no-cho Nishi-ku Niigata 950-2181 Japan
| | - Ryo Murakami
- Department of Biology; Faculty of Science; Niigata University; 8050 Ikarashi 2-no-cho Nishi-ku Niigata 950-2181 Japan
| | - Kosuke Ito
- Department of Biology; Faculty of Science; Niigata University; 8050 Ikarashi 2-no-cho Nishi-ku Niigata 950-2181 Japan
| | - Yoshizumi Ishino
- Department of Bioscience and Biotechnology; Kyushu University; 6-10-1 Hakozaki Higashi-ku Fukuoka 812-8581 Japan
| | - Toshio Uchiumi
- Department of Biology; Faculty of Science; Niigata University; 8050 Ikarashi 2-no-cho Nishi-ku Niigata 950-2181 Japan
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2
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Vila-Sanjurjo A. Modification of the Ribosome and the Translational Machinery during Reduced Growth Due to Environmental Stress. EcoSal Plus 2008; 3. [PMID: 26443727 DOI: 10.1128/ecosalplus.2.5.6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Indexed: 06/05/2023]
Abstract
Escherichia coli strains normally used under laboratory conditions have been selected for maximum growth rates and require maximum translation efficiency. Recent studies have shed light on the structural and functional changes undergone by the translational machinery in E. coli during heat and cold shock and upon entry into stationary phase. In these situations both the composition and the partitioning of this machinery into the different pools of cellular ribosomes are modified. As a result, the translational capacity of the cell is dramatically altered. This review provides a comprehensive account of these modifications, regardless of whether or not their underlying mechanisms and their effects on cellular physiology are known. Not only is the composition of the ribosome modified upon entry into stationary phase, but the modification of other components of the translational machinery, such as elongation factor Tu (EFTu) and tRNAs, has also been observed. Hibernation-promoting factor (HPF), paralog protein Y (PY), and ribosome modulation factor (RMF) may also be related to the general protection against environmental stress observed in stationary-phase E. coli cells, a role that would not be revealed necessarily by the viability assays. Even for the best-characterized ribosome-associated factors induced under stress (RMF, PY, and initiation factors), we are far from a complete understanding of their modes of action.
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3
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Kavran JM, Steitz TA. Structure of the base of the L7/L12 stalk of the Haloarcula marismortui large ribosomal subunit: analysis of L11 movements. J Mol Biol 2007; 371:1047-59. [PMID: 17599351 DOI: 10.1016/j.jmb.2007.05.091] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2007] [Revised: 05/24/2007] [Accepted: 05/30/2007] [Indexed: 11/16/2022]
Abstract
Initiation factors, elongation factors, and release factors all interact with the L7/L12 stalk of the large ribosomal subunit during their respective GTP-dependent cycles on the ribosome. Electron density corresponding to the stalk is not present in previous crystal structures of either 50 S subunits or 70 S ribosomes. We have now discovered conditions that result in a more ordered factor-binding center in the Haloarcula marismortui (H.ma) large ribosomal subunit crystals and consequently allows the visualization of the full-length L11, the N-terminal domain (NTD) of L10 and helices 43 and 44 of 23 S rRNA. The resulting model is currently the most complete reported structure of a L7/L12 stalk in the context of a ribosome. This region contains a series of intermolecular interfaces that are smaller than those typically seen in other ribonucleoprotein interactions within the 50 S subunit. Comparisons of the L11 NTD position between the current structure, which is has an NTD splayed out with respect to previous structures, and other structures of ribosomes in different functional states demonstrates a dynamic range of L11 NTD movements. We propose that the L11 NTD moves through three different relative positions during the translational cycle: apo-ribosome, factor-bound pre-GTP hydrolysis and post-GTP hydrolysis. These positions outline a pathway for L11 NTD movements that are dependent on the specific nucleotide state of the bound ligand. These three states are represented by the orientations of the L11 NTD relative to the ribosome and suggest that L11 may play a more specialized role in the factor binding cycle than previously appreciated.
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Affiliation(s)
- Jennifer M Kavran
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520, USA
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4
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Blanchard SC, Kim HD, Gonzalez RL, Puglisi JD, Chu S. tRNA dynamics on the ribosome during translation. Proc Natl Acad Sci U S A 2004; 101:12893-8. [PMID: 15317937 PMCID: PMC516491 DOI: 10.1073/pnas.0403884101] [Citation(s) in RCA: 356] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Using single-molecule fluorescence spectroscopy, time-resolved conformational changes between fluorescently labeled tRNA have been characterized within surface-immobilized ribosomes proceeding through a complete cycle of translation elongation. Fluorescence resonance energy transfer was used to observe aminoacyl-tRNA (aa-tRNA) stably accommodating into the aminoacyl site (A site) of the ribosome via a multistep, elongation factor-Tu dependent process. Subsequently, tRNA molecules, bound at the peptidyl site and A site, fluctuate between two configurations assigned as classical and hybrid states. The lifetime of classical and hybrid states, measured for complexes carrying aa-tRNA and peptidyl-tRNA at the A site, shows that peptide bond formation decreases the lifetime of the classical-state tRNA configuration by approximately 6-fold. These data suggest that the growing peptide chain plays a role in modulating fluctuations between hybrid and classical states. Single-molecule fluorescence resonance energy transfer was also used to observe aa-tRNA accommodation coupled with elongation factor G-mediated translocation. Dynamic rearrangements in tRNA configuration are also observed subsequent to the translocation reaction. This work underscores the importance of dynamics in ribosome function and demonstrates single-particle enzymology in a system of more than two components.
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Affiliation(s)
- Scott C Blanchard
- Department of Physics and Applied Physics, Stanford University, Stanford, CA 94305-4060, USA
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5
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Savelsbergh A, Mohr D, Wilden B, Wintermeyer W, Rodnina MV. Stimulation of the GTPase activity of translation elongation factor G by ribosomal protein L7/12. J Biol Chem 2000; 275:890-4. [PMID: 10625623 DOI: 10.1074/jbc.275.2.890] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Elongation factors (EFs) Tu and G are GTPases that have important functions in protein synthesis. The low intrinsic GTPase activity of both factors is strongly stimulated on the ribosome by unknown mechanisms. Here we report that isolated ribosomal protein L7/12 strongly stimulates GTP hydrolysis by EF-G, but not by EF-Tu, indicating a major contribution of L7/12 to GTPase activation of EF-G on the ribosome. The effect is due to the acceleration of the catalytic step because the rate of GDP-GTP exchange on EF-G, as measured by rapid kinetics, is much faster than the steady-state GTPase rate. The unique, highly conserved arginine residue in the C-terminal domain of L7/12 is not essential for the activation, excluding an "arginine finger"-type mechanism. L7/12 appears to function by stabilizing the GTPase transition state of EF-G.
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Affiliation(s)
- A Savelsbergh
- Institute of Molecular Biology, University of Witten/Herdecke, 58448 Witten, Germany
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6
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Ribosomal protein P0, contrary to phosphoproteins P1 and P2, is required for ribosome activity and Saccharomyces cerevisiae viability. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(17)40736-8] [Citation(s) in RCA: 87] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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7
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De Vendittis E, Masullo M, Bocchini V. The elongation factor G carries a catalytic site for GTP hydrolysis, which is revealed by using 2-propanol in the absence of ribosomes. J Biol Chem 1986. [DOI: 10.1016/s0021-9258(17)38520-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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8
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Girshovich AS, Bochkareva ES, Ovchinnikov YA. Elongation factor G and protein S12 are the nearest neighbours in the Escherichia coli ribosome. J Mol Biol 1981; 151:229-43. [PMID: 7040673 DOI: 10.1016/0022-2836(81)90513-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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9
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Girshovich AS, Kurtskhalia TV, Vasiliev VD. Localization of the elongation factor G on Escherichia coli ribosome. FEBS Lett 1981; 130:54-9. [PMID: 7026286 DOI: 10.1016/0014-5793(81)80664-3] [Citation(s) in RCA: 78] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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10
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Maassen JA, Möller W. Photochemical cross-linking of elongation factor G to 70-S ribosomes from Escherichia coli by 4-(6-formyl-3-azidophenoxy)butyrimidate. EUROPEAN JOURNAL OF BIOCHEMISTRY 1981; 115:279-85. [PMID: 7016534 DOI: 10.1111/j.1432-1033.1981.tb05235.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Ribosomal proteins situated at or near the binding site of elongation factor G (EF-G) on the Escherichia coli ribosome have been identified by use of the heterobifunctional cross-linker 4-(6-formyl-3-azidophenoxy)butyrimidate. Four different preparations of EF-G, in which the number of cross-linker molecules coupled to EF-G ranged from four to seven, all cross-linked to 50-S subunit proteins L1, L3 and L11 as well as to 30-S subunit proteins S3 and S4. Cross-linking of EF-G to ribosomal proteins was tested electrophoretically. In the case of L7/L12 and L11 immunological methods were also used. Cross-linking of EF-G to L1, L3, L11, S3 and S4 is specific as judged from the fact that addition of unmodified EF-G and of thiostrepton results in less cross-linking. The cross-linking data suggests that the binding site for EF-G includes several proteins which are located at the interface between the 30-S and 50-S subunits.
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11
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Parmeggiani A, Sander G. Properties and regulation of the GTPase activities of elongation factors Tu and G, and of initiation factor 2. Mol Cell Biochem 1981; 35:129-58. [PMID: 6113539 DOI: 10.1007/bf02357085] [Citation(s) in RCA: 104] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
During protein synthesis the interaction with ribosomes of elongation factors Tu (EF-Tu), G (EF-G) and initiation factor 2 (IF-2) is associated with the hydrolysis of GTP which is directly related to the functions of the factors. In this article we review systematically the properties of these GTPase activities in the presence and absence of protein synthesis, and by examining the characteristics of the different minimal systems for the expression of these activities we point to the role of the various effectors and to the enzymological aspects of the systems. For EF-Tu, it has been possible to eliminate any requirement for macromolecular effectors, showing that the factor itself is a GTPase. For EF-G, the presence of at least the 50S ribosomal subunit has remained a requirement, whereas IF-2 needs both the 50S and 30S subunits to exhibit GTPase activity. Between the GTPase activities of the three factors there are some striking similarities, but important differences prevail as a consequence of the specificity of the different functions. This can also be seen by examining the respective ribosomal regions implicated in these reactions. When coupled with protein synthesis, the three GTPase activities reveal characteristics differing from those observed in partial systems.
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12
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13
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Girshovich AS, Kurtskhalia TV. Use of the photoactivated analog of elongation factor G for the study of its interaction with ribosomes. Methods Enzymol 1979; 60:719-26. [PMID: 459925 DOI: 10.1016/s0076-6879(79)60067-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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14
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Koteliansky VE, Domogatsky SP, Gudkov AT. Dimer state of protein L7/L12 and EF-G-dependent reactions of ribosomes. EUROPEAN JOURNAL OF BIOCHEMISTRY 1978; 90:319-23. [PMID: 361401 DOI: 10.1111/j.1432-1033.1978.tb12607.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A number of different monomer and dimer derivatives of protein L7/L12 has been studied in EF-G-dependent reactions on the ribosome. It has been shown that only dimer derivatives of protein L7/L12 are able to interact with the ribosome. This means that it is the dimer forms of protein L7/L12 that are present in the functionally active ribosome. It is likely that the N-terminal sequence of protein L7/L12 is responsible for dimerization of the protein in solution and at the same time contributes mainly to the interaction of the protein L7/L12 dimer with the ribosome. The results obtained suggest that there are four copies of protein L7/L12 in the translating ribosome.
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15
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Kaziro Y. The role of guanosine 5'-triphosphate in polypeptide chain elongation. BIOCHIMICA ET BIOPHYSICA ACTA 1978; 505:95-127. [PMID: 361078 DOI: 10.1016/0304-4173(78)90009-5] [Citation(s) in RCA: 473] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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16
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Hasnain S, Visentin LP. Topography of Escherichia coli ribosomal protein L12 in situ. EUROPEAN JOURNAL OF BIOCHEMISTRY 1977; 80:35-41. [PMID: 336367 DOI: 10.1111/j.1432-1033.1977.tb11852.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The ionization constants of each individual free amino group of Escherichia coli ribosomal protein L12 as it exists on the native intact 50-S subunit has been determined. All these amino groups are exposed and have pK values varying from 9.7 to 11.0. The amino terminus, on the other hand, is unreactive and therefore appears to be buried. In addition, the reactivities indicate that the aminoterminal region of residues 1--59 undergoes a pH-dependent conformational change on the 50-S subunit.
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17
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18
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Grunberg-Manago M, Gros F. Initiation mechanisms of protein syntehesis. PROGRESS IN NUCLEIC ACID RESEARCH AND MOLECULAR BIOLOGY 1977; 20:209-84. [PMID: 333512 DOI: 10.1016/s0079-6603(08)60474-2] [Citation(s) in RCA: 72] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Bernabeu C, Vazquez D, Ballesta JP. Activities of protein-deficient particles derived from 50-S ribosomal subunits by NH4Cl/ethanol treatment. EUROPEAN JOURNAL OF BIOCHEMISTRY 1976; 69:233-41. [PMID: 791646 DOI: 10.1111/j.1432-1033.1976.tb10878.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Protein-deficient ribosomal particles obtained by treatment of 50-S subunits from Escherichia coli ribosomes with 1 M NH4Cl and 50% ethanol contain less than 3% of proteins L7 and L12 and about 7% of proteins L10 and L11. Proteins L1, L5, L8/9 and L25 are also released during the treatment but in amounts accounting for less than 40%. The particles are able to form peptide bonds in different systems, such as 'fragment reaction', puromycin reaction and formation of dipeptides. They also bind N-acetylphenylalanyl-tRNA and phenylalanyl-tRNA non-enzymically but are unable to support any of the elongation-factor-dependent reactions tested. However, when methanol is present, they display up to 20% of the control EF-G-dependent GTP activities such as GTP hydrolysis and formation of the ternary complex EF-G-GuoPP(CH2)P-ribosome. The first activity is totally sensitive to the antibiotic thiostrepton while the formation of the ternary complex is unaffected by the drug. When measured by equilibrium dialysis the core particles are shown to be able to bind radioactive thiostrepton. The results show that protein L11 is not an absolute requirement either for peptidyl transferase activity or for the binding of thiostrepton, although in the last case the protein strongly enhances the ribosome affinity for the antibiotic.
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20
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Morrissey JJ, Caldwell P, Weissbach H, Brot N. The quantitation of ribosome-bound Escherichia coli ribosomal proteins L7L12 by radial immunodiffusion. Anal Biochem 1976; 75:53-7. [PMID: 822749 DOI: 10.1016/0003-2697(76)90054-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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21
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Hamel E. Interactions of guanosine triphosphate analogues with elongation factor G of Escherichia coli. EUROPEAN JOURNAL OF BIOCHEMISTRY 1976; 63:431-40. [PMID: 770173 DOI: 10.1111/j.1432-1033.1976.tb10245.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Previous studies from this laboratory have shown that the GTP analogue guanosine 3'-diphosphate 5'-triphosphate (pppGpp) was almost without activity in the translocation reaction catalyzed by elongation factor G (EF-G), while it was fully active with elongation factor T (EF-T) and initiation factor 2 (IF-2). To assess the importance of the 3'-ribose hydroxyl itself in the translocation reaction, we examined polyphenylalamine synthesis and EF-G-dependent formation of N-acetylphenylalanylphenylalanylpuromycin (Ac-Phe2-puromycin) supported by 3'-deoxyguanosine 5'-triphosphate (3'dGTP) and 3'-deoxy-3'-aminoguanosine 5'-triphosphate (3'dNH2GTP). Like pppGpp, these nucleotides were similar to GTP in EF-T and IF-2dependent reactions. We also examined the ability of the dialcohol derived from GTP by periodate oxidation and borohydride reduction (rroGTP) and of ITP to support translocation. These compounds had shown significant, although reduced, activity with EF-T and IF-2. A spectrum of activity was found with these compounds in both poly(Phe) synthesis and Ac-Phe2-puromycin formation. All had significantly reduced activity relative to GTP, but all were significantly more active than pppGpp. A surprising finding was that the activities of all analogues relative to GTP were dependent on the reaction temperature in both poly(Phe) synthesis and Ac-Phe2-puromycin formation; these relative activities were significantly lower at 8 degrees C after than 37 degrees C. Furthermore, the extent of poly(Phe) synthesis with the analogues relative to GTP could be significantly affected by the amounts of EF-G and EF-T in the reaction mixture. Differences were minimized in the presence of rate-limiting EF-T and saturating EF-G and maximized in the presence of rate-limiting EF-G and saturating EF-T. This effect of reducing the level of EF-G in the reaction mixture thus mimicked the effect of lowering the incubation temperature, and a similar observation was made for Ac-Phe2-puromycin formation. GTP-supported formation of Ac-Phe2-puromycin at 8 degress C could be inhibited by 3'dNH2GTP, 3'dGTP, pppGpp, and ITP: these compounds were better inhibitors than they were substrates. Inhibition by other nucleotides was also noted. The GTP analogues were compared to GTP as substrates in EF-G-dependent reactions uncoupled from protein synthesis. Fusidic-acid-dependent binding of nucleotides to ribosomes and ribosome-dependent catalytic nucleotide hydrolysis were both examined, and the activity of the nucleotides as substrates in these ractions showed little correlation with their ability to support translocation.
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22
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Marsh RC, Chinali G, Parmeggiani A. Function of sulfhydryl groups in ribosome-elongation factor G reactions. Assignment of guanine nucleotide binding site to elongation factor G. J Biol Chem 1975. [DOI: 10.1016/s0021-9258(19)40765-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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23
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Beres L, Lucas-Lenard J. Studies on the in vitro synthesis of ppGpp and pppGpp. BIOCHIMICA ET BIOPHYSICA ACTA 1975; 395:80-90. [PMID: 806304 DOI: 10.1016/0005-2787(75)90236-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The effect of a number of inhibitors of protein synthesis on ppGpp and pppGpp synthesis in vitro has been examined. As expected from in vivo results, chloramphenicol is without effect on this reaction. Aurintricarboxylic acid and chlortetracycline, on the other hand rapidly and specifically inhibit ppGpp synthesis. Fusidic acid in the presence of saturating amounts of EF G also inhibits the reaction completely, suggesting that an empty ribosomal acceptor site is necessary for this reaction. On the other hand, the 50-S subunit proteins L7 and L12 are not required for stringent factor activity. Ribosomes from Pseudomonas fluorescens can replace those from Escherichia coli in the complete system, while ribosomes from Ehrlich ascites cannot. A small but reproducible synthesis of ppGpp is observed when the ribosomal wash from E. coli is complemented with ribosomes from wheat germ cytoplasm.
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24
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Highland JH, Howard GA. Assembly of ribosomal proteins L7, L10, L11, and L12, on the 50 S subunit of Escherichia coli. J Biol Chem 1975. [DOI: 10.1016/s0021-9258(19)41860-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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25
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Voigt J, Sander G, Nagel K, Parmeggiani A. Effect of NH+4 and K+ on the activity of the ribosomal subunits in the EF-G- and EF-T-dependent GTR hydrolysis. Biochem Biophys Res Commun 1974; 57:1279-86. [PMID: 4364569 DOI: 10.1016/0006-291x(74)90834-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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26
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Ballesta JP, Montejo V, Hernandez F, Vazquez D. Alteration of ribosomal proteins and functions by 2-methoxy-5-nitrotropone. EUROPEAN JOURNAL OF BIOCHEMISTRY 1974; 42:167-75. [PMID: 4364394 DOI: 10.1111/j.1432-1033.1974.tb03326.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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27
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The Role of Ribosomal Proteins L7 and L12 in Polypeptide Chain Initiation in Escherichia coli. J Biol Chem 1974. [DOI: 10.1016/s0021-9258(19)42962-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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28
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Lucas-Lenard J, Beres L. 2. Protein Synthesis—Peptide Chain Elongation. ACTA ACUST UNITED AC 1974. [DOI: 10.1016/s1874-6047(08)60134-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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29
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Fakunding JL, Traut RR, Hershey JW. Dependence of Initiation Factor IF-2 Activity on Proteins L7 and L12 from Escherichia coli 50 S Ribosomes. J Biol Chem 1973. [DOI: 10.1016/s0021-9258(19)43169-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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30
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31
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Sander G, Marsh RC, Parmeggiani A. Role of split proteins from 30 S subunits in the ribosome-EF-T GTPase reaction. FEBS Lett 1973; 33:132-4. [PMID: 4352932 DOI: 10.1016/0014-5793(73)80176-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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32
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Voigt J, Parmeggiani A. Action of methanol on the assocation of ribosomal subunits and its effect on the GTPase activity of elongation factor G. Biochem Biophys Res Commun 1973; 52:811-8. [PMID: 4351049 DOI: 10.1016/0006-291x(73)91010-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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33
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Kay A, Sander G, Grunberg-Manago M. Effect of ribosomal protein L12 upon initiation factor IF-2 activities. Biochem Biophys Res Commun 1973; 51:979-86. [PMID: 4350001 DOI: 10.1016/0006-291x(73)90023-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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34
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Beres L, Lucas-Lenard J. Studies on the binding of bacterial elongation factors EF Tu and EF G to ribosomes. Arch Biochem Biophys 1973; 154:555-62. [PMID: 4632421 DOI: 10.1016/0003-9861(73)90008-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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35
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