A banana that weighs 126 grams contains 1 gram of protein, 30 grams of carbohydrates, 3 grams of fiber and 19 grams of sugar. It has 110 calories, no fat, no sodium and no cholesterol.
Though a banana does not have a significant amount of protein, it is a good source of other nutrients and minerals. A banana contains 450 milligrams of potassium, 9 milligrams of vitamin C and 34 milligrams of magnesium. It also offers vitamin B6, manganese, folate, riboflavin, niacin, vitamin A and iron.
Individuals looking for foods higher in protein should consider Greek yogurt, eggs, cheese, milk, lentils, chicken, beef, seafood, beef jerky or nuts.