XMAP215 binds free tubulin subunits and delivers them to the plus end of a microtubule, dramatically accelerating polymerization.

TLS Online TPP Program

#Id: 10194

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 10195

#Unit 6. System Physiology – Plant

Cytokinin biosynthesis, catalyzed by isopentenyl transferase (IPT), that adds isopentenyl side chain from DMAPP (dimethylallyl diphosphate) to ATP or ADP

TLS Online TPP Program

#Id: 10196

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 10197

#Unit 6. System Physiology – Plant

iPRTP or iPRDP is converted to ZTP or ZDP respectively by cytochrome P450 monooxygenase (CYP735A) and converted to zeatin.

TLS Online TPP Program

#Id: 10198

#Unit 6. System Physiology – Plant

The ribotide and riboside forms of trans-zeatin can be interconverted, and free transzeatin can be formed from the ribotide by the LONELY GUY (LOG) family of cytokinin nucleoside 5’ monophosphate phosphohydrolase enzymes

TLS Online TPP Program

#Id: 10199

#Unit 6. System Physiology – Plant

IPT1, IPT3, IPT5, and IPT8 are located in plastids, and the relative expression levels of IPT3 and IPT5 are higher than the other IPTs