Light regulation of protein synthesis factor EF-G in pea chloroplasts
The activity of pea chloroplast elongation factor G (EF-G), a nuclear-coded protein required for the elongation cycle of chloroplast protein synthesis, is regulated in response to light. In pea seedlings germinated and grown under continuous white or red light, EF-G specific activity reaches a maxim...
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Veröffentlicht in: | Plant molecular biology 1992-12, Vol.20 (5), p.791-800 |
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creator | Sezener Akkaya, M. (Ohio State Univ., Columbus, OH (USA). Dept. of Biochemistry) Breitenberger, C.A |
description | The activity of pea chloroplast elongation factor G (EF-G), a nuclear-coded protein required for the elongation cycle of chloroplast protein synthesis, is regulated in response to light. In pea seedlings germinated and grown under continuous white or red light, EF-G specific activity reaches a maximum between days 10 to 15, and then decreases. EF-G activity is almost undetectable in extracts from dark-grown seedlings. When 13-day dark-grown pea seedlings are transferred to light, EF-G specific activity reaches a higher value after 2 to 3 days than observed in seedlings grown under continuous light. The small and large subunits of ribulose bisphosphate carboxylase continue to accumulate after EF-G specific activity has reached maximum levels. Cytoplasmically synthesized components of the chloroplast protein synthetic apparatus, such as EF-G, may help coordinate cytoplasmic and nuclear events with chloroplast gene expression during light-induced chloroplast differentiation. |
doi_str_mv | 10.1007/BF00027150 |
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Cytoplasmically synthesized components of the chloroplast protein synthetic apparatus, such as EF-G, may help coordinate cytoplasmic and nuclear events with chloroplast gene expression during light-induced chloroplast differentiation.</description><identifier>ISSN: 0167-4412</identifier><identifier>EISSN: 1573-5028</identifier><identifier>DOI: 10.1007/BF00027150</identifier><identifier>PMID: 1463821</identifier><identifier>CODEN: PMBIDB</identifier><language>eng</language><publisher>Dordrecht: Springer</publisher><subject>Biological and medical sciences ; CHLOROPLASTE ; CHLOROPLASTS ; Chloroplasts - metabolism ; Chloroplasts - radiation effects ; CLOROPLASTO ; Darkness ; Escherichia coli - metabolism ; Fabaceae - growth & development ; Fabaceae - metabolism ; Fundamental and applied biological sciences. Psychology ; Kinetics ; LIGHT ; LUMIERE ; LUZ ; Molecular and cellular biology ; Molecular genetics ; Peptide Elongation Factor G ; Peptide Elongation Factors - metabolism ; Peptide Elongation Factors - radiation effects ; PISUM SATIVUM ; Plants, Medicinal ; PLANTULAS ; PLANTULE ; PROTEIN SYNTHESIS ; Ribosomes - metabolism ; SEEDLINGS ; SINTESIS DE PROTEINAS ; SYNTHESE PROTEIQUE ; Time Factors ; Translation. Translation factors. 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(Ohio State Univ., Columbus, OH (USA). Dept. of Biochemistry)</creatorcontrib><creatorcontrib>Breitenberger, C.A</creatorcontrib><title>Light regulation of protein synthesis factor EF-G in pea chloroplasts</title><title>Plant molecular biology</title><addtitle>Plant Mol Biol</addtitle><description>The activity of pea chloroplast elongation factor G (EF-G), a nuclear-coded protein required for the elongation cycle of chloroplast protein synthesis, is regulated in response to light. In pea seedlings germinated and grown under continuous white or red light, EF-G specific activity reaches a maximum between days 10 to 15, and then decreases. EF-G activity is almost undetectable in extracts from dark-grown seedlings. When 13-day dark-grown pea seedlings are transferred to light, EF-G specific activity reaches a higher value after 2 to 3 days than observed in seedlings grown under continuous light. The small and large subunits of ribulose bisphosphate carboxylase continue to accumulate after EF-G specific activity has reached maximum levels. Cytoplasmically synthesized components of the chloroplast protein synthetic apparatus, such as EF-G, may help coordinate cytoplasmic and nuclear events with chloroplast gene expression during light-induced chloroplast differentiation.</description><subject>Biological and medical sciences</subject><subject>CHLOROPLASTE</subject><subject>CHLOROPLASTS</subject><subject>Chloroplasts - metabolism</subject><subject>Chloroplasts - radiation effects</subject><subject>CLOROPLASTO</subject><subject>Darkness</subject><subject>Escherichia coli - metabolism</subject><subject>Fabaceae - growth & development</subject><subject>Fabaceae - metabolism</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Kinetics</subject><subject>LIGHT</subject><subject>LUMIERE</subject><subject>LUZ</subject><subject>Molecular and cellular biology</subject><subject>Molecular genetics</subject><subject>Peptide Elongation Factor G</subject><subject>Peptide Elongation Factors - metabolism</subject><subject>Peptide Elongation Factors - radiation effects</subject><subject>PISUM SATIVUM</subject><subject>Plants, Medicinal</subject><subject>PLANTULAS</subject><subject>PLANTULE</subject><subject>PROTEIN SYNTHESIS</subject><subject>Ribosomes - metabolism</subject><subject>SEEDLINGS</subject><subject>SINTESIS DE PROTEINAS</subject><subject>SYNTHESE PROTEIQUE</subject><subject>Time Factors</subject><subject>Translation. Translation factors. 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Dept. of Biochemistry) ; Breitenberger, C.A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c361t-279083554f848d25fefd4e8caa7e9f226c532b87d04fc65c810d4049178f13823</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>Biological and medical sciences</topic><topic>CHLOROPLASTE</topic><topic>CHLOROPLASTS</topic><topic>Chloroplasts - metabolism</topic><topic>Chloroplasts - radiation effects</topic><topic>CLOROPLASTO</topic><topic>Darkness</topic><topic>Escherichia coli - metabolism</topic><topic>Fabaceae - growth & development</topic><topic>Fabaceae - metabolism</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Kinetics</topic><topic>LIGHT</topic><topic>LUMIERE</topic><topic>LUZ</topic><topic>Molecular and cellular biology</topic><topic>Molecular genetics</topic><topic>Peptide Elongation Factor G</topic><topic>Peptide Elongation Factors - metabolism</topic><topic>Peptide Elongation Factors - radiation effects</topic><topic>PISUM SATIVUM</topic><topic>Plants, Medicinal</topic><topic>PLANTULAS</topic><topic>PLANTULE</topic><topic>PROTEIN SYNTHESIS</topic><topic>Ribosomes - metabolism</topic><topic>SEEDLINGS</topic><topic>SINTESIS DE PROTEINAS</topic><topic>SYNTHESE PROTEIQUE</topic><topic>Time Factors</topic><topic>Translation. Translation factors. Protein processing</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sezener Akkaya, M. (Ohio State Univ., Columbus, OH (USA). Dept. of Biochemistry)</creatorcontrib><creatorcontrib>Breitenberger, C.A</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Nucleic Acids Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Plant molecular biology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sezener Akkaya, M. (Ohio State Univ., Columbus, OH (USA). Dept. of Biochemistry)</au><au>Breitenberger, C.A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Light regulation of protein synthesis factor EF-G in pea chloroplasts</atitle><jtitle>Plant molecular biology</jtitle><addtitle>Plant Mol Biol</addtitle><date>1992-12-01</date><risdate>1992</risdate><volume>20</volume><issue>5</issue><spage>791</spage><epage>800</epage><pages>791-800</pages><issn>0167-4412</issn><eissn>1573-5028</eissn><coden>PMBIDB</coden><abstract>The activity of pea chloroplast elongation factor G (EF-G), a nuclear-coded protein required for the elongation cycle of chloroplast protein synthesis, is regulated in response to light. In pea seedlings germinated and grown under continuous white or red light, EF-G specific activity reaches a maximum between days 10 to 15, and then decreases. EF-G activity is almost undetectable in extracts from dark-grown seedlings. When 13-day dark-grown pea seedlings are transferred to light, EF-G specific activity reaches a higher value after 2 to 3 days than observed in seedlings grown under continuous light. The small and large subunits of ribulose bisphosphate carboxylase continue to accumulate after EF-G specific activity has reached maximum levels. Cytoplasmically synthesized components of the chloroplast protein synthetic apparatus, such as EF-G, may help coordinate cytoplasmic and nuclear events with chloroplast gene expression during light-induced chloroplast differentiation.</abstract><cop>Dordrecht</cop><pub>Springer</pub><pmid>1463821</pmid><doi>10.1007/BF00027150</doi><tpages>10</tpages></addata></record> |
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subjects | Biological and medical sciences CHLOROPLASTE CHLOROPLASTS Chloroplasts - metabolism Chloroplasts - radiation effects CLOROPLASTO Darkness Escherichia coli - metabolism Fabaceae - growth & development Fabaceae - metabolism Fundamental and applied biological sciences. Psychology Kinetics LIGHT LUMIERE LUZ Molecular and cellular biology Molecular genetics Peptide Elongation Factor G Peptide Elongation Factors - metabolism Peptide Elongation Factors - radiation effects PISUM SATIVUM Plants, Medicinal PLANTULAS PLANTULE PROTEIN SYNTHESIS Ribosomes - metabolism SEEDLINGS SINTESIS DE PROTEINAS SYNTHESE PROTEIQUE Time Factors Translation. Translation factors. Protein processing |
title | Light regulation of protein synthesis factor EF-G in pea chloroplasts |
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