The RPAP3-Cterminal domain identifies R2TP-like quaternary chaperones.
The RPAP3-Cterminal domain identifies R2TP-like quaternary chaperones.
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DOI:
10.1038/s41467-018-04431-1
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发表时间:
2018-05-29
影响因子:
16.6
通讯作者:
Bertrand E
中科院分区:
文献类型:
--
作者:
Maurizy C;Quinternet M;Abel Y;Verheggen C;Santo PE;Bourguet M;C F Paiva A;Bragantini B;Chagot ME;Robert MC;Abeza C;Fabre P;Fort P;Vandermoere F;M F Sousa P;Rain JC;Charpentier B;Cianférani S;Bandeiras TM;Pradet-Balade B;Manival X;Bertrand E
R2TP is an HSP90 co-chaperone that assembles important macro-molecular machineries. It is composed of an RPAP3-PIH1D1 heterodimer, which binds the two essential AAA+ATPases RUVBL1/RUVBL2. Here, we resolve the structure of the conserved C-terminal domain of RPAP3, and we show that it directly binds RUVBL1/RUVBL2 hexamers. The human genome encodes two other proteins bearing RPAP3-C-terminal-like domains and three containing PIH-like domains. Systematic interaction analyses show that one RPAP3-like protein, SPAG1, binds PIH1D2 and RUVBL1/2 to form an R2TP-like complex termed R2SP. This co-chaperone is enriched in testis and among 68 of the potential clients identified, some are expressed in testis and others are ubiquitous. One substrate is liprin-α2, which organizes large signaling complexes. Remarkably, R2SP is required for liprin-α2 expression and for the assembly of liprin-α2 complexes, indicating that R2SP functions in quaternary protein folding. Effects are stronger at 32 °C, suggesting that R2SP could help compensating the lower temperate of testis. R2TP is an HSP90 co-chaperone composed of an RPAP3-PIH1D1 heterodimer, which binds two essential AAA+ ATPases RUVBL1/RUVBL2. Here authors use a structural approach to study RPAP3 and find an RPAP3-like protein (SPAG1) which also forms a co-chaperone complex with PIH1D2 and RUVBL1/2 enriched in testis.
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影响因子:
8.8
作者:
Horejsi, Zuzana;Stach, Lasse;Boulton, Simon J.
通讯作者:
Boulton, Simon J.
DOI:
10.1083/jcb.200708110
发表时间:
2008-02-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Boulon S;Marmier-Gourrier N;Pradet-Balade B;Wurth L;Verheggen C;Jády BE;Rothé B;Pescia C;Robert MC;Kiss T;Bardoni B;Krol A;Branlant C;Allmang C;Bertrand E;Charpentier B
通讯作者:
Charpentier B
影响因子:
3
作者:
Diebold, Marie-Laure;Fribourg, Sebastien;Romier, Christophe
通讯作者:
Romier, Christophe
影响因子:
4.8
作者:
Cloutier, Philippe;Al-Khoury, Racha;Coulombe, Benoit
通讯作者:
Coulombe, Benoit
影响因子:
30.8
作者:
FromontRacine, M;Rain, JC;Legrain, P
通讯作者:
Legrain, P