Due to a lack of financial resources, we unfortunately have to suspend the import of any new radio frequency and mobile phone-related articles as of now (November 27, 2017). We apologize for this inconvenience and will keep you informed.


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.