phosphoglucan, water dikinase EC#: 2.7.9.5; ChemWhat Code: 1378989
Product Name
phosphoglucan, water dikinase
Example Structure
Synonyms
At5g26570, AtPWD, GWD3, OK1, phosphoglucan, water dikinase, PWD, StGWD3
EC Number
2.7.9.5
CAS Registry Number
912567-76-1
Comments
The enzyme phosphorylates granular starch that has previously been phosphorylated by EC?2.7.9.4, ¦Á-glucan, water dikinase; there is no activity with unphosphorylated glucans. It transfers the ¦Â-phosphate of ATP to the phosphoglucan, whereas the ¦Ã-phosphate is transferred to water [1]. In contrast to EC?2.7.9.4, which phosphorylates the glucose groups in glucans predominantly on O-6, this enzyme phosphorylates glucose groups in phosphorylated starch predominantly on O-3 [2]. The protein phosphorylates itself with the ¦Â-phosphate of ATP, which is then transferred to the glucan [1].
