Direct application of cytokinin to axillary buds stimulates

their growth but strigolactone suppresses axillary bud growth. Besides activating BRC1, strigolactone also inhibits cytokinin biosynthesis by negatively regulating the IPT genes.

TLS Online TPP Program

#Id: 10508

#Unit 4. Cell Communication and Cell Signaling

CED-4 is a protease-activating factor that causes autoproteolytic cleavage of the CED-3 protease to promote its activation and to initiate cell death

TLS Online TPP Program

#Id: 10509

#Unit 4. Cell Communication and Cell Signaling

CED-4 in C. elegans = Apaf-1 in Mammals

TLS Online TPP Program

#Id: 10510

#Unit 4. Cell Communication and Cell Signaling

The principal caspase in C. elegans is CED-3

TLS Online TPP Program

#Id: 10511

#Unit 4. Cell Communication and Cell Signaling

CED-3 in C. elegans = Caspase-9 in mammals

TLS Online TPP Program

#Id: 10512

#Unit 4. Cell Communication and Cell Signaling

EGL-1 protein binds to CED-9, alters its conformation, and catalyzes the release of CED-4 from CED-9

TLS Online TPP Program

#Id: 10513

#Unit 4. Cell Communication and Cell Signaling

Four freed CED-4 dimers combine to form a CED-4 octamer, which binds two molecules of the CED-3 zymogen (an enzymatically inactive precursor) triggers the formation of the active CED-3 protease