Function of the C. elegans T-box factor TBX-2 depends on SUMOylation.
Function of the C. elegans T-box factor TBX-2 depends on SUMOylation.
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DOI:
10.1007/s00018-013-1336-y
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发表时间:
2013-11
影响因子:
8
通讯作者:
Okkema, Peter G.
中科院分区:
文献类型:
--
作者:
Huber, Paul;Crum, Tanya;Clary, Lynn M.;Ronan, Tom;Packard, Adelaide V.;Okkema, Peter G.
T-box transcription factors are critical developmental regulators in all multi-cellular organisms, and altered T-box factor activity is associated with a variety of human congenital diseases and cancers. Despite the biological significance of T-box factors, their mechanism of action is not well understood. Here we examine whether SUMOylation affects the function of the C. elegans Tbx2 sub-family T-box factor TBX-2. We have previously shown that TBX-2 interacts with the E2 SUMO-conjugating enzyme UBC-9, and that loss of TBX-2 or UBC-9 produces identical defects in ABa-derived pharyngeal muscle development. We now show that TBX-2 is SUMOylated in mammalian cell assays, and that both UBC-9 interaction and SUMOylation depends on two SUMO consensus sites located in the T-box DNA binding domain and near the TBX-2 C-terminus, respectively. In co-transfection assays, a TBX-2:GAL4 fusion protein represses expression of a 5xGal4:tk:luciferase construct. However, this activity does not require SUMOylation, indicating SUMO is not generally required for TBX-2 repressor activity. In C. elegans, reducing SUMOylation enhances the phenotype of a temperature-sensitive tbx-2 mutant and results in ectopic expression of a gene normally repressed by TBX-2, demonstrating that SUMOylation is important for TBX-2 function in vivo. Finally, we show mammalian orthologs of TBX-2, Tbx2, and Tbx3, can also be SUMOylated, suggesting SUMOylation may be a conserved mechanism controlling T-box factor activity. The online version of this article (doi:10.1007/s00018-013-1336-y) contains supplementary material, which is available to authorized users.
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影响因子:
2.7
作者:
Chowdhuri, Sinchita Roy;Crum, Tanya;Okkema, Peter G.
通讯作者:
Okkema, Peter G.
影响因子:
2.7
作者:
Formaz-Preston, Ann;Ryu, Jae-Ryeon;Brook, William J.
通讯作者:
Brook, William J.
影响因子:
12.3
作者:
Gentleman RC;Carey VJ;Bates DM;Bolstad B;Dettling M;Dudoit S;Ellis B;Gautier L;Ge Y;Gentry J;Hornik K;Hothorn T;Huber W;Iacus S;Irizarry R;Leisch F;Li C;Maechler M;Rossini AJ;Sawitzki G;Smith C;Smyth G;Tierney L;Yang JY;Zhang J
通讯作者:
Zhang J
影响因子:
5.3
作者:
Campbell, Lioudmila A.;Faivre, Emily J.;Ingraham, Holly A.
通讯作者:
Ingraham, Holly A.
DOI:
10.1111/j.2517-6161.1995.tb02031.x
发表时间:
1995-01-01
影响因子:
5.8
作者:
BENJAMINI, Y;HOCHBERG, Y
通讯作者:
HOCHBERG, Y