ADP-Glucose Transport by the Chloroplast Adenylate Translocator Is Linked to Starch Biosynthesis
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چکیده
منابع مشابه
ADP-Glucose Transport by the Chloroplast Adenylate Translocator Is Linked to Starch Biosynthesis.
In organello starch biosynthesis was studied using intact chloroplasts isolated from spinach leaves (Spinacia oleracea). Immunoblot analysis using a specific antiserum against the mitochondrial adenylate (ADP/ATP) translocator of Neurospora crassa shows the presence of an adenylate translocator protein in the chloroplast envelope membranes, similar to that existing in mitochondria and amyloplas...
متن کاملADP - Glucose Transport by the Chloroplast Adenylate Translocator Is Linked to Starch Biosynthesis 1
In organello starch biosynthesis was studied using intact chloroplasts isolated from spinach leaves (Spinacia oleracea). Immunoblot analysis using a specific antiserum against the mitochondrial adenylate (ADP/ATP) translocator of Neurospora crassa shows the presence of an adenylate translocator protein in the chloroplast envelope membranes, similar to that existing in mitochondria and amyloplas...
متن کاملMost of ADP x glucose linked to starch biosynthesis occurs outside the chloroplast in source leaves.
Sucrose and starch are end products of two segregated gluconeogenic pathways, and their production takes place in the cytosol and chloroplast of green leaves, respectively. According to this view, the plastidial ADP.glucose (ADPG) pyrophosphorylase (AGP) is the sole enzyme catalyzing the synthesis of the starch precursor molecule ADPG. However, a growing body of evidences indicates that starch ...
متن کاملBrittle-1, an adenylate translocator, facilitates transfer of extraplastidial synthesized ADP--glucose into amyloplasts of maize endosperms.
Amyloplasts of starchy tissues such as those of maize (Zea mays L.) function in the synthesis and accumulation of starch during kernel development. ADP-glucose pyrophosphorylase (AGPase) is known to be located in chloroplasts, and for many years it was generally accepted that AGPase was also localized in amyloplasts of starchy tissues. Recent aqueous fractionation of young maize endosperm led t...
متن کاملSucrose synthase controls both intracellular ADP glucose levels and transitory starch biosynthesis in source leaves.
The prevailing model on transitory starch biosynthesis in source leaves assumes that the plastidial ADPglucose (ADPG) pyrophosphorylase (AGP) is the sole enzyme catalyzing the synthesis of the starch precursor molecule, ADPG. However, recent investigations have shown that ADPG linked to starch biosynthesis accumulates outside the chloroplast, presumably in the cytosol. This finding is consisten...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1991
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.97.4.1565