TIR1 recruits AUX/ IAA proteins to the SCF -TIR1 complex in an auxin-dependent manner. Once recruited by auxin, AUX/IAA proteins are ubiquitinated by the E3 ligase activity of the SCF-TIR1 complex, which marks the protein for destruction by the 26S proteasome.

TLS Online TPP Program

#Id: 1235

#Unit 7. System Physiology – Animal

The anterior pituitary secretes six peptide hormones: TSH, FSH, LH, GH, prolactin, & ACTH

TLS Online TPP Program

#Id: 1236

#Unit 7. System Physiology – Animal

Thyrotropin-releasing hormone (TRH) Tripeptide stimulates secretion of TSH by thyrotropes

TLS Online TPP Program

#Id: 1237

#Unit 7. System Physiology – Animal

TSH(thyrotropin)   Controls the secretion rate of thyroxine and triiodothyronine by the thyroid gland.

TLS Online TPP Program

#Id: 1238

#Unit 7. System Physiology – Animal

Corticotropin-releasing hormone (CRH) stimulates secretion of ACTH by corticotropes.

TLS Online TPP Program

#Id: 1239

#Unit 7. System Physiology – Animal

ACTH (corticotropin) controls the secretion of cortisol by the activation of adenylyl cyclase via Galpha s.

TLS Online TPP Program

#Id: 1240

#Unit 7. System Physiology – Animal

The ACTH family is derived from a single precursor, pro-opiomelanocortin (POMC).