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: 8562

#Unit 1. Molecules and their Interaction Relevant to Biology

In neither case does the inhibitor compete with the substrate for the same binding site, so the inhibition cannot be overcome by increasing the substrate concentration.

TLS Online TPP Program

#Id: 1966

#Unit 10. Ecological Principles

Life table for the Beave

TLS Online TPP Program

#Id: 669

#Unit 3. Fundamental Processes

As a result of their modest telomerase activity, their telomeres shorten with each cell cycle.

TLS Online TPP Program

#Id: 4840

#Unit 13. Methods in Biology

A type II error appears when the null hypothesis is false but mistakenly fails to be refused.

TLS Online TPP Program

#Id: 1905

#Unit 4. Cell Communication and Cell Signaling

Surface protein on B cell

CR2(CR21)

CD19

TAPA-1(CD81)

 mIg

Igα/ Igβ

(CD79a and CD79B)

 TLR

CD40

B7 (CD80/86)

ICAM-1

MHC-1 and 2

CD 22