Auxin is the only plant growth hormone known to be transported polarly.  Auxin efflux takes place by PIN proteins

TLS Online TPP Program

#Id: 7146

#Unit 6. System Physiology – Plant

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: 4752

#Unit 5. Developmental Biology

The P1 cell develops autonomously without the presence of AB, generating all the cells it would normally make, and the result is the posterior half of an embryo.

TLS Online TPP Program

#Id: 707

#Unit 3. Fundamental Processes

SeqA binds to hemimethylated DNA and is required for delaying rereplication.

TLS Online TPP Program

#Id: 3622

#Unit 3. Fundamental Processes

Mutations that remove the 2'-OH of the A residue at the 3' end of the P-site tRNA result in a 10⁶ -fold reduction in catalysis rates.

TLS Online TPP Program

#Id: 9854

#Unit 6. System Physiology – Plant

Phototropins (phots) are involved in directing organ, chloroplast, and nuclear movements, solar tracking, and stomatal opening