Summary
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1.
Absorption-spectra curves have been obtained for solutions of the copper “biuret” complexes of vegetable and animal proteins isolated by various methods.
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2.
It has been shown that protein prolo-acids comprise more homogeneous fractions than protein preparations obtained by other methods.
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3.
A possible structure for the copper “biuret” complex of a microstructural protein fragment has been suggested.
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Poroshin, K.T. Organometallic “biuret” protein complexes. Russ Chem Bull 1, 855–858 (1952). https://doi.org/10.1007/BF01198877
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DOI: https://doi.org/10.1007/BF01198877