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Characterization of Ethylene Receptors and Their Interactions with GmTPR-A Novel Tetratricopeptide Repeat Protein (TPR) in Soybean (Glycine max L.)
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作者 NIUYan yan CHENMing +3 位作者 XUZhao shi LILian cheng CHENXue ping MAYOU zhi 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2013年第4期571-581,共11页
Ethylene receptors play important roles not only in regulation of growth and development but also in response to environmental stimuli of plants. However, there are few reports on ethylene receptors in soybean. In thi... Ethylene receptors play important roles not only in regulation of growth and development but also in response to environmental stimuli of plants. However, there are few reports on ethylene receptors in soybean. In this article, putative ethylene receptors of soybean were searched from soybean genomic database (http://www.phytozome.net/search.php) and analyzed. The ethylene receptor gene family in soybean comprising eight members, designated as GmERSI-1, GmERS1-2, GmETRI-1, GmETR1-2, GmETR2-1, GmETR2-2, GmEIN4-1, and GmEIN4-2 corresponding with their homologous genes in drabidopsis, were isolated and analyzed. Phylogenetic analysis indicated that the eight soybean ethylene receptors (SERs) were in two subfamilies and further divided into four groups, viz., groups I (GmERSI-1 and GmERS1-2), 1I (GmETRI-1 and GmETR1-2), VI (GmETR2-I and GmETR2-2), and VII (GmEIN4-1 and GmEIN4-2). Protein structure of the members in groups I and II from subfamily I were more conserved than the members in other two groups from subfamily II. Expression patterns of the SERs were compared with the homologous genes in Arabidopsis. The results demonstrated that expression patterns of the SERs differed from Arabidopsis members in the same group, suggesting that SERs are involved in different signal pathways compared to ethylene receptors in drabidopsis. Promoter analysis showed that the sequences of the members in each group were different from each other, and some specific binding elements of transcription factors detected in promoter sequences might explain the differences between the members in the same group. A novel soybean TPR protein (tetratricopeptide repeat protein), GmTPR, was identified to interact with GmETRI-1, apparently an important ethylene receptor in ethylene signaling pathway in soybean. This suggested that GmTPR might be a novel downstream component of the ethylene signaling pathway. 展开更多
关键词 SOYBEAN ARABIDOPSIS ethylene receptor TPR protein
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Pitt, a Novel Tetratricopeptide Repeat Protein Involved in Light-Dependent Chlorophyll Biosynthesis and Thylakoid Membrane Biogenesis in Synechocystis sp. PCC 6803 被引量:1
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作者 Marco Schottkowski Janina Ratke +2 位作者 Ulrike Oster Marc Nowaczyk Jorg Nickelsen 《Molecular Plant》 SCIE CAS CSCD 2009年第6期1289-1297,共9页
Biogenesis of photosynthetic pigment/protein complexes is a highly regulated process that requires various assisting factors. Here, we report on the molecular analysis of the Pitt gene (sir1644) from the cyanobacter... Biogenesis of photosynthetic pigment/protein complexes is a highly regulated process that requires various assisting factors. Here, we report on the molecular analysis of the Pitt gene (sir1644) from the cyanobacterium Synechocystis sp. PCC 6803 (Synechocystis 6803) that encodes a membrane-bound tetratricopeptide repeat (TPR) protein of formerly unknown function. Targeted inactivation of Pitt affected photosynthetic performance and light-dependent chlorophyll synthesis. Yeast two-hybrid analyses and native PAGE strongly suggest a complex formation between Pitt and the light-dependent protochlorophyllide oxidoreductase (POR). Consistently, POR levels are approximately threefold reduced in the pitt insertion mutant. The membrane sublocalization of Pitt was found to be dependent on the presence of the periplasmic photosystem Ⅱ (PSⅡ) biogenesis factor PratA, supporting the idea that Pitt is involved in the early steps of photosynthetic pigment/protein complex formation. 展开更多
关键词 SYNECHOCYSTIS TPR protein POR thylakoid membrane chlorophyll.
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