Abstract:
:The cellular environment is crowded with different kinds of molecules with varying sizes, shapes and compositions. Most of the experiments studying the nature and behaviour of a protein have been done on the isolated protein in dilute buffer solutions which actually do not imitate the in vivo situation. To understand the consequences of such crowded environment, we investigated the effect of macromolecular crowding on the stability and activity of hen egg white lysozyme. Two crowding agents, dextran 70 and ficoll 70 which have different shapes and composition, have been employed in this study. To mimic the cellular condition from physiological point of view, the effect of mixtures of both the crowding agents has been also studied. The results indicate that owing to volume exclusion, lysozyme is stabilized while its activity decays with the increasing concentration of both the crowders elucidating the hypothesis of stability-activity trade-off. Mixed macromolecular crowding exerts greater effect than the sum of constituent crowding agents (dextran 70 and ficoll 70).
journal_name
Arch Biochem Biophysjournal_title
Archives of biochemistry and biophysicsauthors
Shahid S,Ahmad F,Hassan MI,Islam Adoi
10.1016/j.abb.2015.08.015subject
Has Abstractpub_date
2015-10-15 00:00:00pages
42-50eissn
0003-9861issn
1096-0384pii
S0003-9861(15)30041-2journal_volume
584pub_type
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