کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5913253 | 1162182 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Redefining the metabolic continuity of chloroplasts and ER
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
As a hub for plant metabolism, plastids extensively exchange metabolites with the extraplastid environment. For polar metabolites, membrane transporters mediate this exchange, but for many plastid-synthesized nonpolar compounds, such transporters remain elusive. Here, we discuss recent data from transorganellar complementation studies that demonstrate that enzymes in one organelle can directly access nonpolar metabolites from a companion organelle. We propose that a mechanism, based on hemifused-membranes at plastid-endoplasmic reticulum (ER) contact sites, facilitates interorganellar interactions and allows enzymes direct, transporter-independent access to a range of nonpolar compounds in both organelle membranes. In a wider context, interorganellar metabolism at hemifusion interfaces would allow evolution of membrane-spanning pathways for the many thousands of nonpolar metabolites in the plant kingdom to be uncoupled from coevolution with nonpolar metabolite transporters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Trends in Plant Science - Volume 19, Issue 8, August 2014, Pages 501-507
Journal: Trends in Plant Science - Volume 19, Issue 8, August 2014, Pages 501-507
نویسندگان
Payam Mehrshahi, Cassandra Johnny, Dean DellaPenna,