Each DnaB–DnaC complex consists of six DnaC monomers bound to a hexamer of DnaB.

Note that the DnaB helicase cannot open double-stranded DNA; it can only unwind DNA that has already been opened, in this case by DnaA.

DnaB binding to single-stranded DNA is the signal to hydrolyze ATP and for release of DnaC.

TLS Online TPP Program

#Id: 839

#Unit 2. Cellular Organization

Fusicoccum amygdali produces the toxin fusicoccin, which constitutively activates the plasma membrane H+‐ATPase.

TLS Online TPP Program

#Id: 840

#Unit 2. Cellular Organization

Fusicoccin causes irreversible opening of stomata and plant wilting, followed by cell death and fungal colonization

TLS Online TPP Program

#Id: 841

#Unit 2. Cellular Organization

Fusicoccin affects role of  

a) Auxin

b) GA

c) ABA

d) IPT

TLS Online TPP Program

#Id: 842

#Unit 2. Cellular Organization

Fusicoccin stimulates both rapid proton extrusion and transient growth in stem and HYPERPOLARIZATION OF MEMBRANE

TLS Online TPP Program

#Id: 843

#Unit 2. Cellular Organization

The activation of electrogenic pumps as H+ ATPase can be measured in patch-clamping experiments

TLS Online TPP Program

#Id: 844

#Unit 2. Cellular Organization

Necrotroph induces the generation of plant ROS, leading to death of host tissue and, ultimately, pathogen growth.