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Examples of Protein

Protein is the basic component of living cells and is made of carbon, hydrogen, oxygen, nitrogen and one or more chains of amino acids. The three types of proteins are fibrous, globular, and membrane.

Fibrous Proteins

Fibrous proteins form muscle fiber, tendons, connective tissue and bone.
Examples of fibrous proteins are:

  • Actin
  • Arp2/3
  • Collagen
  • Coronin
  • Dystrphin
  • Elastin
  • F-spondin
  • Fibronectin
  • Keratin
  • Myosin
  • Nebulin
  • Pikachurin
  • Spectrin
  • Tau
  • Titin
  • Tropomyosin
  • Tubulin

Globular Proteins

Globular proteins are more water soluble than the other classes of proteins and they have several functions including transporting, catalyzing, and regulating.
Here are examples of globular proteins:

  • Albumins
  • Alpha globulin
  • Beta globulin
  • C1-inhibitor
  • C3-convertase
  • Cadherin
  • Carboxypeptidase
  • C-reactive protein
  • Ependymin
  • Factor VIII
  • Factor XIII
  • Fibrin
  • Gamma globulin
  • Hemoglobin
  • IgA
  • IgD
  • IgE
  • IgG
  • IgM
  • Integrin
  • Myoglobin
  • NCAM
  • Protein C
  • Protein S
  • Protein Z
  • Protein Z-related protease inhibitor
  • Selectin
  • Serum albumin
  • Serum Amyloid P Component
  • Thrombin
  • Von Willebrand Factor

Membrane Proteins

Membrane proteins play several roles including relaying signals within cells, allowing cells to interact, and transporting molecules.
Examples of membrane proteins include:

  • CFTR
  • C-myc
  • Estrogen receptor
  • FOXP2
  • FOXP3
  • Glucose transporter
  • Glycophorin D
  • Histones
  • Hydrolases
  • Muscarinic acetylcholine receptor
  • MyoD
  • Nicotinic acetylcholine receptor
  • Oxidoreductases
  • P53
  • Potassium channel
  • Rhodopsin
  • Scramblase
  • Transferases

High Protein Foods

Here are examples of foods high in protein with the number of grams per 100 grams of the food:

  • Soya beans – 35.9g
  • Cheese – 30.9g
  • Venison – 30.21
  • Pumpkin seeds – 28.8g
  • Lobster – 26.41
  • Canned tuna fish – 26.3g
  • Tuna fish – 25.6g
  • Monkfish – 24g
  • Crunchy peanut butter – 24.9g
  • Tilapia – 24g
  • Skinless chicken breast – 23.5g
  • Sunflower seeds – 23.4g
  • Orange roughy – 22.64g
  • Skinless turkey breast – 22.3g
  • Boneless salmon fillets – 21.6g
  • Sardines – 21.5g
  • Almonds – 21.1g
  • Beef fillet – 20.9
  • Lamb steak – 19.9g
  • Pork chops – 19.3g
  • Crab meat – 18.1g
  • Cod – 17.9g
  • Shrimp – 17.0g
  • Haddock – 16.4g
  • Bacon – 15.9g
  • Couscous – 15.1g
  • Anchovies – 14.5g
  • Pork sausages – 13.9g
  • Eggs – 12.5g
  • Pasta – 12.5g
  • Goji berries – 12.3g
  • Cottage cheese – 12.2g
  • Tofu – 12.1g
  • Pepperoni pizza – 11.4g
  • Whole grain bread – 11.0g
  • Porridge oats – 11.0g
  • Baked beans – 9.5g
  • Hummus – 7.4g
  • Brown rice – 6.9g
  • Peas – 5.9g
  • Spaghetti – 5.1g
  • Yogurt – 4.5g
  • Broccoli – 4.2g
  • Coconut – 3.33g
  • Whole milk – 3.3g
  • Asparagus – 2.9g
  • Spinach – 2.8g
  • Potatoes – 2.1g
  • Avocado – 1.9g
  • Bananas – 1.2g
  • Orange – 1.1g

High Protein Foods Sorted by Type

Beans

  • Tofu (½ cup) – 20g
  • Soy milk (1 cup) – 6 to 10g
  • Soy beans (½ cup cooked) – 14g
  • Split peas (½ cup cooked) – 8g
  • Other beans like black, pinto, lentils (1/2 cup) – 7 to 10g

Eggs and Dairy

  • Egg (1 large) – 6g
  • Cottage cheese (½ cup) – 15g
  • Milk (1 cup) – 8g
  • Yogurt (1 cup) – 8 to 12g
  • Soft cheeses like brie, camembert mozzarella (1 oz) – 6g
  • Medium cheeses like cheddar and Swiss (1 oz) – 7 to 8g
  • Hard cheeses like parmesan (1 oz) – 10g

Nuts and Seeds

  • Almonds (¼ cup) – 8g
  • Cashews (¼ cup) – 5g
  • Flax seeds (¼ cup) – 8g
  • Peanut butter (2 Tablespoons) – 8g
  • Peanuts (¼ cup) – 9g
  • Pecans (¼ cup) – 2.5g
  • Pumpkin seeds (¼ cup) – 8g
  • Sunflower seeds (¼ cup) – 6g

 Beef

  • Hamburger patty (4 oz) – 28g
  • Steak (6 oz) – 42g
  • Other cuts of beef (1 oz) – around 7g

 Chicken

  • Chicken breast (3.5 oz) – 30g
  • Chicken thigh -10g
  • Drumstick – 11g
  • Wing – 6g
  • Chicken meat (4 oz cooked) – 35g

Fish

  • Most cuts of fish (3.5 oz) – around 22g
  • Tuna (6 oz) – 4 g

Pork

  • Pork chop (average size) – 22g
  • Pork loin or tenderloin (4 oz) – 9g
  • Ham (3 oz) – 19g
  • Ground pork (3 oz cooked) – 22g
  • Bacon, 1 slice – 3g
  • Canadian-style bacon (slice) – 5 to 6g

So, now you have seen a lot of different examples of proteins in different foods and substances.


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