PCS-based structure determination of protein-protein complexes.
PCS-based structure determination of protein-protein complexes.
复制标题
基于 PCS 的蛋白质-蛋白质复合物结构测定。
DOI:
10.1007/s10858-010-9401-4
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发表时间:
2010-04
影响因子:
2.7
通讯作者:
Inagaki F
中科院分区:
文献类型:
--
作者:
Saio T;Yokochi M;Kumeta H;Inagaki F
A simple and fast nuclear magnetic resonance method for docking proteins using pseudo-contact shift (PCS) and 1HN/15N chemical shift perturbation is presented. PCS is induced by a paramagnetic lanthanide ion that is attached to a target protein using a lanthanide binding peptide tag anchored at two points. PCS provides long-range (~40 Å) distance and angular restraints between the lanthanide ion and the observed nuclei, while the 1HN/15N chemical shift perturbation data provide loose contact-surface information. The usefulness of this method was demonstrated through the structure determination of the p62 PB1-PB1 complex, which forms a front-to-back 20 kDa homo-oligomer. As p62 PB1 does not intrinsically bind metal ions, the lanthanide binding peptide tag was attached to one subunit of the dimer at two anchoring points. Each monomer was treated as a rigid body and was docked based on the backbone PCS and backbone chemical shift perturbation data. Unlike NOE-based structural determination, this method only requires resonance assignments of the backbone 1HN/15N signals and the PCS data obtained from several sets of two-dimensional 15N-heteronuclear single quantum coherence spectra, thus facilitating rapid structure determination of the protein–protein complex. The online version of this article (doi:10.1007/s10858-010-9401-4) contains supplementary material, which is available to authorized users.
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