Signal sequences

contain one or more positively charged amino acids adjacent to a continuous stretch of 6–12 hydrophobic residues (known as the hydrophobic core)

TLS Online TPP Program

#Id: 1317

#Unit 4. Cell Communication and Cell Signaling

Muscarinic acetylcholine receptor is coupled to a Gαi protein.

TLS Online TPP Program

#Id: 1318

#Unit 4. Cell Communication and Cell Signaling

Rod cells sense light via light-sensitive GPCR known as Rhodopsin.

TLS Online TPP Program

#Id: 1319

#Unit 4. Cell Communication and Cell Signaling

The heterotrimeric G protein coupled to rhodopsin, called Transducin.

TLS Online TPP Program

#Id: 1320

#Unit 4. Cell Communication and Cell Signaling

On absorption of a photon, the retinal moiety of rhodopsin is immediately converted into 11-cis-retinal to the all-trans retinal.

TLS Online TPP Program

#Id: 1321

#Unit 4. Cell Communication and Cell Signaling

Rapid Termination of the Rhodopsin Signal Transduction Pathway Rhodopsin kinase & Arrestin.

TLS Online TPP Program

#Id: 1322

#Unit 4. Cell Communication and Cell Signaling

Gαi activate α2-Adrenergic receptor