Best Answer: Membrane proteins can be divided into several categories: Integral membrane proteins which are permanently bound to the lipid bilayer. Peripheral membrane proteins that are temporarily associated with lipid bilayer or with integral membrane proteins. Lipid-anchored proteins bound to lipid bilayer bound through lipidated amino acid residues.
When one or more of these glands is infected, it is called parotitis. Submandibular glands are located on each side of your jaw below the jawbone. Sublingual glands sit on the bottom of your mouth under your tongue. Additionally, hundreds of small (minor) salivary glands deposit saliva from ducts around your mouth.
Red spots under tongue could be an indication of canker sores, reactions produced by an allergic substance among other causes. Moreover, if you have red or dark red bumps under tongue or on the floor of mouth that have lasted longer or keep appearing see your dentist urgently.