Glucose-1-phosphate adenylyltransferase family protein;(source:Araport11)
TAIR Curator Summary:
Encodes the large subunit of ADP-Glucose Pyrophosphorylase which catalyzes the first, rate limiting step in starch biosynthesis. The large subunit plays a regulatory role whereas the small subunit (ApS) is the catalytic isoform. Four isoforms (ApL1-4) have been identified. ApL3 is the major large subunit isoform present in inflorescences, fruits and roots.
TAIR Short Description:
Glucose-1-phosphate adenylyltransferase family protein