2022
Tailoring Butyl Methacrylate/Methacrylic Acid Copolymers for the Solubilization of Membrane Proteins: The Influence of Composition and Molecular Weight
JANATA, Miroslav, Eva CADOVA, Pavla ANGELISOVA, Tatsiana CHARNAVETS, Vaclav HOREJSI et. al.Základní údaje
Originální název
Tailoring Butyl Methacrylate/Methacrylic Acid Copolymers for the Solubilization of Membrane Proteins: The Influence of Composition and Molecular Weight
Autoři
JANATA, Miroslav, Eva CADOVA, Pavla ANGELISOVA, Tatsiana CHARNAVETS, Vaclav HOREJSI a Vladimir RAUS
Vydání
Macromolecular Bioscience, WEINHEIM, Wiley-VCH, 2022, 1616-5187
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.600
Kód RIV
RIV/00216224:14740/22:00128767
Organizační jednotka
Středoevropský technologický institut
UT WoS
000842344300001
Klíčová slova anglicky
amphiphilic copolymers; isolation; membrane proteins; screening; solubilization
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 28. 2. 2023 15:33, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
Low-molecular weight (MW) amphiphilic copolymers have been recently introduced as a powerful tool for the detergent-free isolation of cell membrane proteins. Herein, a screening approach is used to identify a new copolymer type for this application. Via a two-step ATRP/acidolysis procedure, a 3 x 3 matrix of well-defined poly[(butyl methacrylate)-co-(methacrylic acid)] copolymers (denoted BMAA) differing in their MW and ratio of hydrophobic (BMA) and hydrophilic (MAA) units is prepared. Subsequently, using the biologically relevant model (T-cell line Jurkat), two compositions of BMAA copolymers are identified that solubilize cell membranes to an extent comparable to the industry standard, styrene-maleic acid copolymer (SMA), while avoiding the potentially problematic phenyl groups. Surprisingly, while only the lowest-MW variant of the BMA/MAA 2:1 composition is effective, all the copolymers of the BMA/MAA 1:1 composition are found to solubilize the model membranes, including the high-MW variant (MW of 14 000). Importantly, the density gradient ultracentrifugation/sodium dodecyl sulfate-polyacrylamide gel electrophoresis/Western blotting experiments reveal that the BMA/MAA 1:1 copolymers disintegrate the Jurkat membranes differently than SMA, as demonstrated by the different distribution patterns of two tested membrane protein markers. This makes the BMAA copolymers a useful tool for studies on membrane microdomains differing in their composition and resistance to membrane-disintegrating polymers.
Návaznosti
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