[Comparative study in structure of myoglobins in semiaquatic animals: Castor fiber, Ondatra Zibethica, Lutra lutra].

A degree of similarity in the structure of myoglobins in the semiaquatic animals (beaver, muskrat, otter) is shown by the finger-print method with the determination of amino acids content in peptides. It is established that about 2/3 of the acid sequence in the investigated myoglobins are invariable. An assumption is advanced that these regions of the structure are of most importance in the functional respect.