Probing structural differences in prion protein isoforms by tyrosine nitration.
Probing structural differences in prion protein isoforms by tyrosine nitration.
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通过酪氨酸硝化探索朊病毒蛋白亚型的结构差异。
DOI:
10.1021/bi0617254
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发表时间:
2007
期刊:
影响因子:
2.9
通讯作者:
McGuirl,MicheleA
中科院分区:
文献类型:
--
作者:
Lennon,ChristopherW;Cox,HollyD;Hennelly,ScottP;Chelmo,SamJ;McGuirl,MicheleA
Two conformational isomers of recombinant hamster prion protein (residues 90−232) have been probed by reaction with two tyrosine nitration reagents, peroxynitrite and tetranitromethane. Two conserved tyrosine residues (tyrosines 149 and 150) are not labeled by either reagent in the normal cellular form of the prion protein. These residues become reactive after the protein has been converted to the β-oligomeric isoform, which is used as a model of the fibrillar form that causes disease. After conversion, a decrease in reactivity is noted for two other conserved residues, tyrosine 225 and tyrosine 226, whereas little to no effect was observed for other tyrosines. Thus, tyrosine nitration has identified two specific regions of the normal prion protein isoform that undergo a change in chemical environment upon conversion to a structure that is enriched in β-sheet.
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影响因子:
--
作者:
M. Eftink
通讯作者:
M. Eftink
影响因子:
3.7
作者:
Leffers, KW;Wille, H;Riesner, D
通讯作者:
Riesner, D
DOI:
--
发表时间:
2001
期刊:
Journal of Virology 75(3)
影响因子:
--
作者:
Supattapone S;Muramoto T;Legname G;et al.
通讯作者:
et al.
影响因子:
4.8
作者:
Sigurdsson, EM;Brown, DR;Wisniewski, T
通讯作者:
Wisniewski, T
影响因子:
3.9
作者:
Souza, JM;Daikhin, E;Ischiropoulos, H
通讯作者:
Ischiropoulos, H