There are a large variety of serine residues, and the phosphorylation of each residue can lead to different metabolic consequences. 1  Protein kinase N1 is responsible for the phosphorylation of the TNF receptor-associated factor (TRAF1) on serine 139 under specific conditions.
There are 121 calories in a 1/2 cup of Fried Potatoes. Calorie breakdown: 23% fat, 69% carbs, 8% protein.
How to Keep Mashed Potatoes Healthy. Even though plain potatoes are low in calories, mashed potatoes aren't always healthy. A traditional homemade serving of mashed potatoes can contain 237 calories or more when they are prepared with butter and whole milk.