label: transmembrane histidine kinase cytokinin receptor activity
label_lc: transmembrane histidine kinase cytokinin receptor activity
description: "Combining with a cytokinin and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity by catalysis of the reaction: ATP + a protein-L-histidine = ADP + a protein-L-histidine phosphate."