Structural maturation of SYCP1-mediated meiotic chromosome synapsis by SYCE3.
Structural maturation of SYCP1-mediated meiotic chromosome synapsis by SYCE3.
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DOI:
10.1038/s41594-022-00909-1
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发表时间:
2023-03
影响因子:
16.8
通讯作者:
Davies OR
中科院分区:
文献类型:
--
作者:
Crichton JH;Dunce JM;Dunne OM;Salmon LJ;Devenney PS;Lawson J;Adams IR;Davies OR
In meiosis, a supramolecular protein structure, the synaptonemal complex (SC), assembles between homologous chromosomes to facilitate their recombination. Mammalian SC formation is thought to involve hierarchical zipper-like assembly of an SYCP1 protein lattice that recruits stabilising central element (CE) proteins as it extends. Here, we combine biochemical approaches with separation-of-function mutagenesis in mice to show that, rather than stabilising the SYCP1 lattice, the CE protein SYCE3 actively remodels this structure during synapsis. We find that SYCP1 tetramers undergo conformational change into 2:1 heterotrimers upon SYCE3-binding, removing their assembly interfaces and disrupting the SYCP1 lattice. SYCE3 then establishes a new lattice by its self-assembly mimicking the role of the disrupted interface in tethering together SYCP1 dimers. SYCE3 also interacts with CE complexes SYCE1-SIX6OS1 and SYCE2-TEX12, providing a mechanism for their recruitment. Thus, SYCE3 remodels the SYCP1 lattice into a CE-binding integrated SYCP1-SYCE3 lattice to achieve long-range synapsis by a mature SC.
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影响因子:
16.8
作者:
Dunce JM;Dunne OM;Ratcliff M;Millán C;Madgwick S;Usón I;Davies OR
通讯作者:
Davies OR
影响因子:
5.8
作者:
Davies OR;Maman JD;Pellegrini L
通讯作者:
Pellegrini L
影响因子:
4.5
作者:
Ollinger R;Childs AJ;Burgess HM;Speed RM;Lundegaard PR;Reynolds N;Gray NK;Cooke HJ;Adams IR
通讯作者:
Adams IR
影响因子:
5.7
作者:
Lizatovic, Robert;Aurelius, Oskar;Andre, Ingemar
通讯作者:
Andre, Ingemar
影响因子:
6.1
作者:
Konarev, PV;Volkov, VV;Svergun, DI
通讯作者:
Svergun, DI