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Cereal crops accumulate starch in the seed endosperm as an energy reserve. ADP-glucose pyrophosphorylase (AGPase) plays a key role in regulating starch biosynthesis in cereal seeds. The AGPase in the maize endosperm is a heterotetramer of two small subunits, encoded by Brittle2 (Bt2) gene, and two large subunits, encoded by the Shrunken2 (Sh2) gene. The two genes (Bt2, Sh2) from maize were introduced...
Phosphorylation is an ubiquitous regulatory mechanism governing the activity, subcellular localization, and intermolecular interactions of proteins. To identify a broad range of phosphoproteins from Zea mays, we enriched phosphopeptides from Zea mays leaves using titanium dioxide microcolumns and then extensively fractionated and identified the phosphopeptides by mass spectrometry. A total of 165...
A bHLH (basic helix-loop-helix domain) transcription factor involved in tolerance to Pi starvation was cloned from Zea mays with an RT-PCR coupled RACE approach and named ZmPTF1. ZmPTF1 encoded a putative protein of 481 amino acids that had identity with OsPTF1 in basic region. Real-time RT-PCR revealed that ZmPTF1 was quickly and significantly up-regulated in the root under phosphate starvation conditions...
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