a thick, brown-green fluid secreted by the liver which is alkaline in its reactions, containing bile salts, bile pigments, CHOLESTEROL and inorganic salts. Bile is transferred from the liver to the DUODENUM via the bile duct which in many mammals contains a reservoir called the gall bladder.
Vasopressin, also known as arginine vasopressin (AVP), antidiuretic hormone (ADH), or argipressin, is a neurohypophysial hormone found in most mammals.Its two primary functions are to retain water in the body and to constrict blood vessels.asopressin regulates the body's retention of water by acting to increase water reabsorption in the kidney's collecting ducts, the tubules which receive the very dilute urine produced by the functional unit of the kidney, the nephrons.
A good precedent for such a role of proteinâprotein interactions is provided by the budding yeast Saccharomyces cerevisiae, the mating-type genes of which encode the homeodomain proteins a1 and Î± 2. These two proteins recognize similar contact sites on DNA.he exd gene has recently been cloned by Rauskolb et al. [9] , and, intriguingly, turns out to encode a homeodomain protein with some indications of having a particular sequence relationship to the yeast a1 gene product.