Characterisation of HOIP RBR E3 ligase conformational dynamics using integrative modelling.
Characterisation of HOIP RBR E3 ligase conformational dynamics using integrative modelling.
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DOI:
10.1038/s41598-022-18890-6
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发表时间:
2022-09-08
影响因子:
4.6
通讯作者:
Fraternali, Franca
中科院分区:
文献类型:
--
作者:
Kausas, Marius;Esposito, Diego;Rittinger, Katrin;Fraternali, Franca
Multidomain proteins composed of individual domains connected by flexible linkers pose a challenge for structural studies due to their intrinsic conformational dynamics. Integrated modelling approaches provide a means to characterise protein flexibility by combining experimental measurements with molecular simulations. In this study, we characterise the conformational dynamics of the catalytic RBR domain of the E3 ubiquitin ligase HOIP, which regulates immune and inflammatory signalling pathways. Specifically, we combine small angle X-ray scattering experiments and molecular dynamics simulations to generate weighted conformational ensembles of the HOIP RBR domain using two different approaches based on maximum parsimony and maximum entropy principles. Both methods provide optimised ensembles that are instrumental in rationalising observed differences between SAXS-based solution studies and available crystal structures and highlight the importance of interdomain linker flexibility.
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影响因子:
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通讯作者:
Salsbury FR Jr
影响因子:
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Wereszczynski, Jeff
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Dikic, Ivan
影响因子:
64.8
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通讯作者:
Riedl SJ