Insights Into the Structure-Function Relationships of Dimeric C3d Fragments.
Insights Into the Structure-Function Relationships of Dimeric C3d Fragments.
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DOI:
10.3389/fimmu.2021.714055
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发表时间:
2021
影响因子:
7.3
通讯作者:
van den Elsen JMH
中科院分区:
文献类型:
--
作者:
Wahid AA;Dunphy RW;Macpherson A;Gibson BG;Kulik L;Whale K;Back C;Hallam TM;Alkhawaja B;Martin RL;Meschede I;Laabei M;Lawson ADG;Holers VM;Watts AG;Crennell SJ;Harris CL;Marchbank KJ;van den Elsen JMH
Cleavage of C3 to C3a and C3b plays a central role in the generation of complement-mediated defences. Although the thioester-mediated surface deposition of C3b has been well-studied, fluid phase dimers of C3 fragments remain largely unexplored. Here we show C3 cleavage results in the spontaneous formation of C3b dimers and present the first X-ray crystal structure of a disulphide-linked human C3d dimer. Binding studies reveal these dimers are capable of crosslinking complement receptor 2 and preliminary cell-based analyses suggest they could modulate B cell activation to influence tolerogenic pathways. Altogether, insights into the physiologically-relevant functions of C3d(g) dimers gained from our findings will pave the way to enhancing our understanding surrounding the importance of complement in the fluid phase and could inform the design of novel therapies for immune system disorders in the future.
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影响因子:
2.8
作者:
He YG;Pappworth IY;Rossbach A;Paulin J;Mavimba T;Hayes C;Kulik L;Holers VM;Knight AM;Marchbank KJ
通讯作者:
Marchbank KJ
影响因子:
5.6
作者:
Gilbert, HE;Eaton, JT;Perkins, SJ
通讯作者:
Perkins, SJ
影响因子:
56.9
作者:
Forneris, Federico;Ricklin, Daniel;Gros, Piet
通讯作者:
Gros, Piet
影响因子:
7.8
作者:
Aversa, G;Punnonen, J;de Vries, J E
通讯作者:
de Vries, J E
影响因子:
56.9
作者:
Dempsey, PW;Allison, MED;Fearon, DT
通讯作者:
Fearon, DT