In vertebrates, Rb is the major guardian of the cell cycle, integrating information about DNA damage and cell growth

TLS Online TPP Program

#Id: 8946

#XL - T Zoology

An inhibitor of the GTPase, called Kin4, localizes to the parent cell but is absent from the bud.

TLS Online TPP Program

#Id: 8139

#XL - Q Biochemistry

Three major types of coated vesicles involved in protein trafficking:

1. COPII vesicles

2. COPI vesicles 

3. Clathrin-coated vesicles

TLS Online TPP Program

#Id: 9761

#XL - R Botany

These VOCs are herbivore– induced plant volatiles (HIPV) HIPV and act as cues for natural enemies of the insect herbivore, for example parasitic wasps.

TLS Online TPP Program

#Id: 9314

#XL - T Zoology

3 or 4 cGMP molecules must bind to each channel in order to open it; because of this cooperative allosteric interaction, channel opening is very sensitive to small changes in cGMP levels.

TLS Online TPP Program

#Id: 9360

#XL - T Zoology

Smad2/3 become phosphorylated by active RI receptors and together with Smad4 move into the nucleus to activate gene transcription