This information is used to determine the density of the air entering the combustion chamber (in conjunction with the IAT (Intake Air temperature) sensor), which is used when calculating the proper air/fuel mixture for the engine, especially at WOT since the system is not in closed-loop at this time.
The TTR gene provides instructions for producing a protein called transthyretin. This protein transports vitamin A (retinol) and a hormone called thyroxine throughout the body. To transport thyroxine, four transthyretin proteins must be attached (bound) to each other to form a four-protein unit (tetramer).
Aquaporin-2 is the protein which is the vasopressin responsive water channel in the collecting duct. It is inserted into the apical membrane in reponse to cyclic AMP. The protein forms a tetrameric complex that spans the membrane and forms a channel which allows rapid water movement in response to an osmolar gradient.DH is a nonapeptide produced in the supraoptic and paraventricular nuclei and other areas of the hypothalamus. Its major role is in the regulation of water balance by its effect on the kidneys. ADH is also known as vasopressin because of the vasopressor response to pharmacological doses.