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.
Calories per Hole. Cake doughnut fans should be aware that each unglazed cake-style doughnut hole has 59 calories, 3.3 grams of fat and 2.3 grams of sugars. A glazed, yeast-leavened doughnut isn't much better with 55 calories, 3 grams of fat and 3 grams of sugar. Glazed chocolate cake doughnut holes will be similar in calories, but the jelly-filled doughnut holes are slightly higher in calories than unfilled doughnut holes. Serving Size Importance