Two-dimensional pulsed electron spin resonance characterization of 15N-labeled archaeal Rieske-type ferredoxin.

Two-dimensional pulsed electron spin resonance characterization of 15N-labeled archaeal Rieske-type ferredoxin.
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DOI:
10.1016/j.febslet.2009.09.050
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发表时间:
2009-11-03
期刊:
影响因子:
3.5
通讯作者:
Dikanov SA
Dikanov SA
中科院分区:
生物学3区
文献类型:
--
作者:
Iwasaki T;Samoilova RI;Kounosu A;Dikanov SA

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对来自硫磺菌 P1 的均匀 15N 标记的古菌 Rieske 型 [2Fe-2S] 铁氧还蛋白 (ARF) 进行了二维电子自旋回波包络调制 (HYSCORE) 分析,并与之前表征的高潜力蛋白质同系物进行了比较。这些蛋白质之间的主要差异在于 (++) 象限中的 HYSCORE 线形和信号强度,这些差异是由还原簇附近的弱耦合(非配位)肽氮造成的。它们在 ARF 的 HYSCORE 光谱中不如高潜力蛋白质同系物的 HYSCORE 光谱那么明显,并且可能解释了各种氧化还原系统中 Rieske 型簇的调节。
Two-dimensional electron spin-echo envelope modulation (HYSCORE) analysis of the uniformly 15N-labeled archaeal Rieske-type [2Fe-2S] ferredoxin (ARF) from Sulfolobus solfataricus P1 has been conducted in comparison with the previously characterized high-potential protein homologs. Major differences among these proteins were found in the HYSCORE lineshapes and intensities of the signals in the (++) quadrant, which are contributed from weakly coupled (non-coordinated) peptide nitrogens near the reduced clusters. They are less pronounced in the HYSCORE spectra of ARF than those of the high-potential protein homologs, and may account for the tuning of Rieske-type clusters in various redox systems.
DOI: 10.1039/b904597j
发表时间: 2009-01-01
影响因子: 3.3
作者:
Dikanov, Sergei A.;Samoilova, Rimma I.;Huettermann, Juergen
通讯作者: Huettermann, Juergen
DOI: 10.1021/ja0562393
发表时间: 2006-02-22
影响因子: 15
作者:
Iwasaki, T;Kounosu, A;Dikanov, SA
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期刊: BIOCHEMISTRY
影响因子: 2.9
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通讯作者: Ullmann, GM
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影响因子: 2.2
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