Coiled-coil structure of meiosis protein TEX12 and conformational regulation by its C-terminal tip.
Coiled-coil structure of meiosis protein TEX12 and conformational regulation by its C-terminal tip.
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DOI:
10.1038/s42003-022-03886-9
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发表时间:
2022-09-07
影响因子:
5.9
通讯作者:
中科院分区:
文献类型:
--
作者:
Meiosis protein TEX12 is an essential component of the synaptonemal complex (SC), which mediates homologous chromosome synapsis. It is also recruited to centrosomes in meiosis, and aberrantly in certain cancers, leading to centrosome dysfunction. Within the SC, TEX12 forms an intertwined complex with SYCE2 that undergoes fibrous assembly, driven by TEX12’s C-terminal tip. However, we hitherto lack structural information regarding SYCE2-independent functions of TEX12. Here, we report X-ray crystal structures of TEX12 mutants in three distinct conformations, and utilise solution light and X-ray scattering to determine its wild-type dimeric four-helical coiled-coil structure. TEX12 undergoes conformational change upon C-terminal tip mutations, indicating that the sequence responsible for driving SYCE2-TEX12 assembly within the SC also controls the oligomeric state and conformation of isolated TEX12. Our findings provide the structural basis for SYCE2-independent roles of TEX12, including the possible regulation of SC assembly, and its known functions in meiotic centrosomes and cancer. The X-ray crystal structures of C-terminal mutants of the coiled-coil protein cancer testis antigen TEX12 in combination with modeling of the TEX12 wild-type dimer reveal the protein’s control of its oligomeric state, which resembles assembly of its complex with synaptonemal complex central element protein SYCE2.
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DOI:
10.1107/s090744491003982x
发表时间:
2011-04
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Evans PR
通讯作者:
Evans PR
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:
1.6
作者:
Dunne, Orla M.;Davies, Owen R.
通讯作者:
Davies, Owen R.
影响因子:
5.6
作者:
Arantes, Pablo R.;Poleto, Marcelo D.;Ligabue-Braun, Rodrigo
通讯作者:
Ligabue-Braun, Rodrigo