Light-associated and Processing-dependent Protein Binding to 5′ Regions of rbcL mRNA in the Chloroplasts of a C4 Plant*
Light-associated and Processing-dependent Protein Binding to 5′ Regions of rbcL mRNA in the Chloroplasts of a C4 Plant*
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与 C4 植物叶绿体中 rbcL mRNA 5 区域的光相关和加工依赖性蛋白结合*
DOI:
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发表时间:
2001
影响因子:
4.8
通讯作者:
J. O. Berry
中科院分区:
文献类型:
--
作者:
D. McCormac;Hanz Litz;Jianxin Wang;P. Gollnick;J. O. Berry
In amaranth, a C4dicotyledonous plant, the plastid rbcL gene (encoding the large subunit of ribulose-1,5-bisphosphate carboxylase) is regulated post-transcriptionally during many developmental processes, including light-mediated development. To identify post-transcriptional regulators of rbcL expression, three types of analyses (polysome heel printing, gel retardation, and UV cross-linking) were utilized. These approaches revealed that multiple proteins interact with 5′ regions ofrbcL mRNA in light-grown, but not etiolated, amaranth plants. Light-associated binding of a 47-kDa protein (p47), observed by UV cross-linking, was highly specific for the rbcL 5′ RNA. Binding of p47 occurred only with RNAs corresponding to mature processed rbcL transcripts (5′-untranslated region (UTR) terminating at −66); transcripts with longer 5′-UTRs did not associate with p47 in vitro. Variations in the length of therbcL 5′-UTR were found to occur in vivo, and these different 5′ termini may prevent or enhance light-associated p47 binding, possibly affecting rbcL expression as well. p47 binding correlates with light-dependent rbcL polysome association of the fully processed transcripts in photosynthetic leaves and cotyledons but not with cell-specificrbcL mRNA accumulation in bundle sheath and mesophyll chloroplasts.
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DOI:
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发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Koo,JS;Spremulli,LL
通讯作者:
Spremulli,LL
影响因子:
56.9
作者:
Kim, JM;Mayfield, SP
通讯作者:
Mayfield, SP
DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Koo,JS;Spremulli,LL
通讯作者:
Spremulli,LL
影响因子:
--
作者:
W. Gruissem;B. Greenberg;G. Zurawski;R. Hallick
通讯作者:
W. Gruissem;B. Greenberg;G. Zurawski;R. Hallick
影响因子:
11.4
作者:
WOLIN, SL;WALTER, P
通讯作者:
WALTER, P