Mechanism: How Polymerase Find Promoter Sequences

TLS Online TPP Program

#Id: 10225

#Unit 6. System Physiology – Plant

Members of the cytochrome P450 monooxygenase (CYP) enzyme family that are associated with the ER catalyze most of the reactions in the brassinosteroid biosynthesis pathway

TLS Online TPP Program

#Id: 10226

#Unit 6. System Physiology – Plant

BR regulate seed germination, cell elongation, cell division, senescence, vascular-differentiation, reproduction, root development, photomorphogenesis, and also respond to various biotic and abiotic stresses.

TLS Online TPP Program

#Id: 10227

#Unit 6. System Physiology – Plant

BR-deficient mutants exhibits extreme dwarfism, altered leaf morphology, abnormal vascular development, delayed flowering and senescence, and reduced male fertility.

TLS Online TPP Program

#Id: 10228

#Unit 6. System Physiology – Plant

brassinolide binds to brassinosteroid receptor kinase BRASSINOSTEROID-INSENSITIVE1 (BRI1) on the plasma membrane triggers a phosphorylation cascade that causes a repressor protein, BRASSINOSTEROID-INSENSITIVE2 (BIN2), to become inactivated.

TLS Online TPP Program

#Id: 10229

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 10230

#Unit 6. System Physiology – Plant

Upon binding brassinolide, homodimers of BRI1 are activated and heterooligomerize with the RLK BRI1-ASSOCIATED RECEPTOR KINASE1 (BAK1)