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Evidence of two oxidation states of copper during aggregation of hen egg white lysozyme (HEWL).

Abstract：

:In vitro fibrillation of hen egg white lysozyme (HEWL) causes complete reduction of Cu(II) to Cu(I) at pH 7. Here in the present article, we have shown the presence of both Cu(II) and Cu(I) at pH 11 during fibrillation of HEWL using electron paramagnetic resonance and Raman spectroscopy. Our results suggest the existence of a partially reducing environment during fibrillation of hen egg white lysozyme at pH 11. The fibrillation process is governed by the pH of the solution and maximum fibrillation is found to occur at pH 11. Fibrils formed in the absence of Cu(II) were also found to cause significant hemolysis of RBC.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Ghosh S,Pandey NK,Bhattacharya S,Roy A,Nagy NV,Dasgupta S

doi

10.1016/j.ijbiomac.2015.02.014

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

1-9

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(15)00083-5

journal_volume

76

pub_type

杂志文章

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