Digestive system of humpback whales with a keratinized stratified squamous epithelium which is continuous of the oesophagus epithelium. Due to the reflux of stomach juices from the main stomach, minor digestive activity takes place in the forestomach. The main stomach, also referred to as the fundic stomach, secretes mucus, protein digesting enzymes and hydrochloric acid to aid the breakdown of food and lined. The stomach lining is reddish–purple, highly convoluted and sometimes trabeculate epithelium. The pyloric stomach secretes enzymes that digest fat as well as alkaline chemicals to neutralize the stomach acid. It is the combined actions of these different compartments that allow whales to
Calponin 3, acidic in mouse CC myoblasts inhibited cell fusion during "in vitro" differentiation, whereas "Cnn3" gene knockdown promoted cell fusion and the expression of skeletal muscle myosin. The inhibitory effect of calponin 3 was reversed upon phosphorylation by Rho-associated kinase 1/2 (ROCK1/2). Calponin 3, acidic Calponin 3. acidic is a protein that in humans is encoded by the "CNN3" gene. The "CNN3" gene is located at 1p22-p21 in the human chromosomal genome. "CNN3" gene contains 7 exons and encodes calponin 3, a 36.4-kDa protein consisting of 329 amino acids with isoelectric point (pI) of 5.84. Calponin 3 is known as acidic calponin.