Organism
Arabidopsis thaliana
Function
Catalyzes the hydrolysis of phosphoanhydride bonds of nucleoside tri- and di-phosphates. Substrate preference is ATP > ADP. Functions with APY1 to reduce extracellular ATP level which is essential for pollen germination and normal plant development. Plays a role in the regulation of stomatal function by modulating extracellular ATP levels in guard cells.
Similarity
Belongs to the GDA1/CD39 NTPase family.
Sequence
MTAKRGIGRHESLADKIQRHRGIILVISVPIVLIGLVLLLMPGRSISDSVVEEYSVHNRKGGPNSRGPKNYAVIFDAGSSGSRVHVYCFDQNLDLIPLGNELELFLQLKPGLSAYPTDPRQAANSLVSLLDKAEASVPRELRPKTHVRVGATAGLRTLGHDASENILQAVRELLRDRSMLKTEANAVTVLDGTQEGSYQWVTINYLLRNLGKPYSDTVGVVDLGGGSVQMAYAISEEDAASAPKPLEGEDSYVREMYLKGRKYFLYVHSYLHYGLLAARAEILKVSEDSENPCIVAGYDGMYKYGGKEFKAPASQSGASLDECRRITINALKVNDTLCTHMKCTFGGVWNGGRGGGQKNMFVASFFFDRAAEAGFVDPKQPVATVRPMDFEKAAKKACSMKLEEGKSTFPLVEEENLPYLCMDLVYQYTLLIDGFGLEPSQTITLVKKVKYGDQAVEAAWPLGSAIEAVSSP