When Pr molecules are exposed to red light, most of them absorb it and are converted to Pfr, but some of the Pfr also absorbs the red light and is converted back to Pr because both Pr and Pfr absorb red light. 

TLS Online TPP Program

#Id: 6491

#Unit 3. Fundamental Processes

Four TAFs do have some intrinsic DNA binding ability: TAF4b, TAF12, TAF9, and TAF6 are (distant) homologs of histones H2A, H2B, H3, and H4, respectively.  TAF4b/TAF12 and TAF9/TAF6 form heterodimers using the histone fold motif

TLS Online TPP Program

#Id: 662

#Unit 3. Fundamental Processes

Telomeres cluster on the nuclear envelope just prior to homologous chromosome synapsis during meiosis.

TLS Online TPP Program

#Id: 7509

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 10406

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 9706

#Unit 4. Cell Communication and Cell Signaling

Ligand binding to either of the two yeast pheromone GPCRs triggers the exchange of GTP for GDP on the Gα subunit and dissociation of Gα∙GTP from the Gβγ complex.