German: Protein
Japanese: タンパク質

Biochemistry. Proteins are the principal constituents of all organisms and consist essentially of combinations of amino acids in peptide linkages. Each protein has a unique, genetically defined amino acid sequence which determines its specific shape and function. Proteins serve as enzymes, hormones, immunoglobulins, structural elements, and membrane proteins, and are involved in muscle contraction and photosynthesis.

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