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proteins

Cultural  
  1. Complex organic molecules (see also organic molecule) made up of amino acids. Proteins are basic components of all living cells and are therefore among the principal substances that make up the body. In addition to being necessary for the growth and repair of the body's tissues, proteins provide energy and act as enzymes that control chemical reactions in the cell.


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Foods that contain a high percentage of protein include meat, fish, poultry, milk products, beans, and nuts.

Example Sentences

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Certain microbes living in the digestive system can send proteins straight into human cells, actively influencing how the immune system behaves.

From Science Daily

However, maintaining the right balance requires additional proteins embedded in the lysosomal membrane.

From Science Daily

The insects can generate their own body heat like mammals and produce antifreeze proteins similar to those found in Arctic fish.

From Science Daily

Improving this limitation could have a major impact on fields such as single-cell proteomics and metabolomics, which aim to measure all proteins or metabolites within a single cell.

From Science Daily

It also processes pork, chicken, lamb and salmon, and it has offset losses in its North American beef business with earnings from its other proteins and regions where it operates.

From The Wall Street Journal