See Also: extracellular matrix proteins(medicine)
Extracellular matrix(medicine)
matrix proteins(medicine)
viral matrix proteins(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Extracellular(health)
Extracellular(medicine)
extracellular enzyme(medicine)
extracellular fluid(medicine)
extracellular space(medicine)

Transducin (medicine) and extracellular matrix proteins (medicine)


Transducin (medicine)


transducin
<protein> A GTP-binding protein found in the disc membrane of retinal rods and cones: of the part of the cascade involved in transduction of light to a nervous impulse.

A complex of three subunits, alpha (39 kD), beta (36 kD) and gamma (8 kD). Photoexcited rhodopsin interacts with transducin and promotes the exchange of GTP for GDP on the _ subunit.

The GTP _ subunit dissociates from the complex and activates a cGMP phospodiesterase by removing an inhibitory subunit. The _ subunit of transducin can be ADP ribosylated by cholera toxin and pertussis toxin.


extracellular matrix proteins (medicine)


extracellular matrix proteins


Macromolecular organic compounds that contain carbon, hydrogen, oxygen, nitrogen, and usually, sulfur. These macromolecules (proteins) form an intricate meshwork in which cells are embedded to construct tissues. Variations in the relative types of macromolecules and their organization determine the type of extracellular matrix, each adapted to the functional requirements of the tissue. The two main classes of macromolecules that form the extracellular matrix are: glycosaminoglycans, usually linked to proteins (proteoglycans), and fibrous proteins (e.g., collagen, elastin, fibronectins and laminin).