Spectroscopy of NOX Protein Family Members.
Spectroscopy of NOX Protein Family Members.
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NOX 蛋白家族成员的光谱。
DOI:
10.1007/978-1-4939-9424-3_7
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Nauseef,WilliamM
中科院分区:
文献类型:
--
作者:
Nakano,Yoko;Nauseef,WilliamM
All members of the NOX protein family contain a unique b-type cytochrome that mediates the electron transport that characterizes the activity of the multicomponent oxidase complexes. Referred to as cytochrome b558, because of its signature spectral absorbance at 558 nm in reduced-minus-oxidized difference spectroscopy, or cytochrome b(-245), because of its very low midpoint potential of −245 mV at pH 7.0, the protein possesses two stacked inequivalent hemes ligated by pairs of histidine residues in membrane helices h3 and h5. In a flavin-dependent fashion, cytochrome b558 shuttles electrons from cytoplasmic NADPH across membranes to molecular oxygen and thereby generates superoxide anion. By performing reduced-minus-oxidized difference spectroscopy and using the millimolar extinction coefficient,E559–540 nm= 21.6 cm−1mM−1, one can calculate the amount of cytochrome b558 in intact cells or partially purified membrane preparations. Measurements in samples where cytochrome b558 is relatively high and the presence of unrelated heme-containing proteins low, as in neutrophils, are straightforward. However, low levels of cytochrome b558 expression combined with an abundance of mitochondria and other sources of heme proteins make spectral detection of cytochrome b558 in non-phagocytic cells extremely challenging.
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DOI:
--
发表时间:
1984
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Borregaard,N;Tauber,AI
通讯作者:
Tauber,AI
影响因子:
6.4
作者:
Francesca Magnania;Simone Nencia;Elisa Millana Fananasa;Marta Ceccona;Elvira Romerob;Marco W. Fraaijeb;Andrea Mattevia
通讯作者:
Francesca Magnania;Simone Nencia;Elisa Millana Fananasa;Marta Ceccona;Elvira Romerob;Marco W. Fraaijeb;Andrea Mattevia
影响因子:
4.1
作者:
A. Cross;F. K. Higson;O. Jones;A. Harper;A. Segal
通讯作者:
A. Segal
DOI:
10.1016/s0021-9258(18)54815-8
发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
H. Radeke;A. Cross;J. Hancock;O. Jones;Masaaki Nakamura;V. Kaever;Klaus Resch
通讯作者:
Klaus Resch
DOI:
10.1093/oxfordjournals.jmicro.a049514
发表时间:
1966
期刊:
Journal of Electron Microscopy
影响因子:
--
作者:
Y. Shinagawa;Y. Shinagawa;C. Tanaka;Akio Teraoka
通讯作者:
Akio Teraoka