Cysteine-specific Cu2+ chelating tags used as paramagnetic probes in double electron electron resonance.
Cysteine-specific Cu2+ chelating tags used as paramagnetic probes in double electron electron resonance.
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在双电子电子共振中用作顺磁探针的半胱氨酸特异性 Cu2+ 螯合标签。
DOI:
10.1021/jp5103143
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发表时间:
2015-02-19
期刊:
影响因子:
--
通讯作者:
Saxena S
中科院分区:
文献类型:
--
作者:
Cunningham TF;Shannon MD;Putterman MR;Arachchige RJ;Sengupta I;Gao M;Jaroniec CP;Saxena S
Double electron electron resonance (DEER) is an attractive technique that is utilized for gaining insight into protein structure and dynamics via nanometer-scale distance measurements. The most commonly used paramagnetic tag in these measurements is a nitroxide spin label, R1. Here, we present the application of two types of high-affinity Cu2+ chelating tags, based on the EDTA and cyclen metal-binding motifs as alternative X-band DEER probes, using the B1 immunoglobulin-binding domain of protein G (GB1) as a model system. Both types of tags have been incorporated into a variety of protein secondary structure environments and exhibit high spectral sensitivity. In particular, the cyclen-based tag displays distance distributions with comparable distribution widths and most probable distances within 1–3 Å when compared to homologous R1 distributions. The results display the viability of the cyclen tag as an alternative to the R1 side chain for X-band DEER distance measurements in proteins.
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影响因子:
2.9
作者:
Cunningham, Timothy F.;McGoff, Marshall S.;Saxena, Sunil
通讯作者:
Saxena, Sunil
DOI:
10.1073/pnas.89.14.6383
发表时间:
1992-07-15
影响因子:
11.1
作者:
ERMACORA, MR;DELFINO, JM;FOX, RO
通讯作者:
FOX, RO
影响因子:
16.6
作者:
Matalon, Erez;Huber, Thomas;Goldfarb, Daniella
通讯作者:
Goldfarb, Daniella
影响因子:
15
作者:
Potapov, Alexey;Yagi, Hiromasa;Goldfarb, Danielle
通讯作者:
Goldfarb, Danielle
影响因子:
6.8
作者:
Hubbell WL;López CJ;Altenbach C;Yang Z
通讯作者:
Yang Z