A 55-kDa calcium dependent protein kinase phosphorylated thr residues from the auto-regulatory domain of plasma membrane H+-ATPase in rice

作者：Ookura T^*; Komatsu S; Kawamura Y; Kasamo K

来源：Japan Agricultural Research Quarterly, 2005, 39(2): 99-104.

DOI：10.6090/jarq.39.99

• ATPase activity
• cold stress

Plasma membrane H+-ATPases play important roles in plant growth by keeping a proton gradient across the membrane. Although cold or pathogen stress affects the activity of the H+-ATPase and plant growth, its regulatory mechanisms are not fully elucidated. A rice 55-kDa calcium-dependent protein kinase was activated on cold treatment and pathogen infection. Here we showed that the kinase phosphorylated two Thr residues in the auto-regulatory domain of the H+-ATPase in vitro. Phosphorylation of these Thr residues might contribute to the ATPase activity regulation during cold or pathogen stress.

• 出版日期2005-4