Protein phosphorylation is a reversible post-translational modification of proteins. In eukaryotes, protein phosphorylation functions in cell signaling, gene expression, and differentiation. It is also involved in DNA replication during the cell cycle, and the mechanisms that cope with stress-induced replication blocks.
Cake Doughnut. A single glazed chocolate cake doughnut that is around 3 3/4 inches in diameter can have close to 250 calories. Depending on the recipe, some varieties -- like chocolate-frosted chocolate cake doughnuts -- can have as many as 370 calories.
A plain cake sugar or glazed doughnut contains 18 amino acids and calcium. Function. Information on the number of calories in a doughnut can be useful if you are overweight and on a diet. The information can help you avoid consuming high calorie foods such as doughnuts, and the numbers can be helpful if you are trying to maintain a healthy weight.