Chicken, steak, fish, and eggs plated on a cutting board - Mediterranean/Getty Images If you've spent any time among workout gurus, you've probably heard a lot about the importance of protein. This ... Men's Journal on MSN: This Beef-Based Protein Provides the Same Amino Acid Profile as a Steak This Beef-Based Protein Provides the Same Amino Acid Profile as a Steak AOL: Dietitians Say Flat Iron Steak Rivals Pricier Options for Protein and Flavor Dietitians Say Flat Iron Steak Rivals Pricier Options for Protein and Flavor Choosing the right cut of steak for your nutritional needs, budget, or flavor preference can really elevate your meal ...

Understanding the Context

and perhaps elevate your level of confusion. Some of the unhealthiest steak ... A protein is a large, complex molecule that is a key building block of life. We all know that it is an important part of our diets, but how many of us know how protein actually works in our bodies, and why we need it?

Key Insights

A representation of the 3D structure of the protein myoglobin showing turquoise α-helices. This protein was the first to have its structure solved by X-ray crystallography. Toward the right-center among the coils, a prosthetic group called a heme group (shown in gray) with a bound oxygen molecule (red). Proteins are large biomolecules and macromolecules that comprise one or more long chains ... Proteins and Polypeptides Proteins are organic compounds that contain four elements: nitrogen, carbon, hydrogen, and oxygen.

Final Thoughts

To comprehend the full scope of proteins, it is crucial to understand various properties, including the basic biological molecule, peptides, polypeptide chains, amino acids, protein structures, and the processes of protein denaturation. Polypeptides and Proteins: What's ...