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A circular dichroism study of the protective role of polyphosphoesters polymer chains in polyphosphoester‐myoglobin conjugates
Author(s) -
Pelosi Chiara,
Arrico Lorenzo,
Zinna Francesco,
Wurm Frederik R.,
Di Bari Lorenzo,
Tinè Maria R.
Publication year - 2022
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.23486
Subject(s) - chemistry , circular dichroism , myoglobin , polymer , conjugate , combinatorial chemistry , biophysics , crystallography , biochemistry , organic chemistry , mathematical analysis , mathematics , biology
Protein‐polymer conjugates are a blooming class of hybrid systems with high biomedical potential. Despite a plethora of papers on their biomedical properties, the physical–chemical characterization of many protein‐polymer conjugates is missing. Here, we evaluated the thermal stability of a set of fully‐degradable polyphosphoester‐protein conjugates by variable temperature circular dichroism, a common but powerful technique. We extensively describe their thermodynamic stability in different environments (in physiological buffer or in presence of chemical denaturants, e.g., acid or urea), highlighting the protective role of the polymer in preserving the protein from denaturation. For the first time, we propose a simple but effective protocol to achieve useful information on these systems in vitro, useful to screen new samples in their early stages.