In the presence of brassinolide, the activated phosphatase BSU1 dephosphorylates BIN2 and promotes its degradation by the 26S proteasome system, thus blocking its activity. BES1 and BZR1

are then dephosphorylated by PROTEIN PHOSPHATASE2A

(PP2A), and the active forms of BES1 and BZR1 move into the nucleus where they regulate the expression of brassinolide response genes

TLS Online TPP Program

#Id: 7973

#Unit 10. Ecological Principles

Plant cell walls restrict the extent to which cells can expand, hence the pressure on the cell wall increases as more water enters the cell.

TLS Online TPP Program

#Id: 4592

#Unit 13. Methods in Biology

2D Histogram

TLS Online TPP Program

#Id: 2642

#Unit 13. Methods in Biology

Notice that S1 mapping and primer extension are well suited to mapping transcripts made in vivo; by contrast, run-off transcription relies on transcription in vitro.

TLS Online TPP Program

#Id: 2874

#Unit 13. Methods in Biology

The Beer–Lambert law is valid for low concentrations only.

TLS Online TPP Program

#Id: 6709

#Unit 3. Fundamental Processes

Cajal bodies are sites of reassembly of the U4/U6/U5 tri-snRNP complex from the free U4, U5, and U6 snRNPs released during the removal of introns from mRNAs