label: histone H3T45 kinase activity
label_lc: histone h3t45 kinase activity
description: "Catalysis of the reaction: histone H3-threonine (position 45) + ATP = histone H3-phosphothreonine (position 45) + ADP. This reaction is the addition of a phosphate group to the threonine residue at position 45 of histone H3."