The structure of the NXF2/NXT1 heterodimeric complex reveals the combined specificity and versatility of the NTF2-like fold.
The structure of the NXF2/NXT1 heterodimeric complex reveals the combined specificity and versatility of the NTF2-like fold.
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DOI:
10.1016/j.jmb.2011.11.027
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发表时间:
2012-01-27
影响因子:
5.6
通讯作者:
Williamson, James R.
中科院分区:
文献类型:
--
作者:
Kerkow, Donald E.;Carmel, Andrew B.;Menichelli, Elena;Ambrus, Geza;Hills, Ronald D., Jr.;Gerace, Larry;Williamson, James R.
NXF1-like members of the Nuclear eXport Factor (NXF) family orchestrate bulk nuclear export of mRNA, while functionally distinct NXF variant proteins carry out separate substrate and tissue specific RNA regulation. Metazoan organisms possess at least one NXF1-like gene and one or more NXF variant genes. Heterodimerization of both proteins with the NTF2-related eXporT protein (NXT) is central to NXF family function, but given the multiplicity of NXF/NXT complexes, the specificity and mechanism of heterodimerization remains unclear. Here, we report the structural and functional analysis of the Caenorhabditis elegans NXF variant, ceNXF2, bound to ceNXT1. Contacts crucial for NXF/NXT heterodimer stability and specificity have been identified, including a probable site for phosphoregulation. The ceNXF2 NTF2 domain bears at least two nucleoporin (Nup) binding pockets necessary for colocalization of ceNXF2/ceNXT1 at the nuclear envelope. Unexpectedly, one Nup binding pocket is formed at the heterodimer interface of the ceNXF2/ceNXT1 complex, demonstrating that NXT binding directly regulates NXF function.
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影响因子:
5.6
作者:
Hills RD Jr;Brooks CL 3rd
通讯作者:
Brooks CL 3rd
影响因子:
11.4
作者:
Katahira, J;Strässer, K;Hurt, E
通讯作者:
Hurt, E
影响因子:
11.4
作者:
Ribbeck, K;Görlich, D
通讯作者:
Görlich, D
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
DOI:
10.1073/pnas.2534828100
发表时间:
2004-01-13
影响因子:
11.1
作者:
Levy, Y;Wolynes, PG;Onuchic, JN
通讯作者:
Onuchic, JN