nucleotide-binding domain (NBD) of Arabidopsis thaliana apyrase 7 (AtAPY7) and similar proteins
Apyrase 7 (APY7; EC 3.6.1.5), also called ATP-diphosphatase, ATP-diphosphohydrolase, adenosine diphosphatase, ADPase, NTPDase, or nucleoside triphosphate diphosphohydrolase 7, catalyzes the hydrolysis of phosphoanhydride bonds of nucleoside tri- and di-phosphates (NTPs and NDPs). AtAPY7 has been classified as a type IV-A membrane protein. It is important in pollen exine formation. AtAPY7 does not appear to function as a typical apyrase.
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