The C5b component is extremely labile, is not covalently bound to the membrane like C3b and C4b, and is rapidly inactivated unless it is stabilized by the binding of C6.

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

TLS Online TPP Program

#Id: 1323

#Unit 4. Cell Communication and Cell Signaling

Positive and negative regulation of adenylyl cyclase activity-

Gαs-coupled receptors

Gαi-coupled receptors