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.
But there are some treats that come in a little lower. 1  Apple and Spice Donut: 260 calories. 2  Cinnamon Guava Donut: 250 calories. 3  Glazed Bavarian KrÃ¨me Donut: 270 calories. 4  Chocolate Frosted Donut: 280 calories. 5  Chocolate Frosted Donut with Sprinkles: 290 calories. 6  Cocoa Glazed Donut: 260 calories. 7  French Cruller: 220 calories.