ArticleJournal of structural biology2016
The Sac3 TPR-like region in the Saccharomyces cerevisiae TREX-2 complex is more extensive but independent of the CID region.
Article in Journal of structural biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- TREX2 component PCID2 scaffolds alternative SAC3-based subcomplexes with distinct RNA processing and export function.bioRxiv : the preprint server for biology · 2026Article
- Molecular insights into mRNA export regulation by the human TREX-2 complex.Nature communications · 2026Article
- Article
- Xmas-2 Protein, the Core Protein of the TREX-2 mRNA Export Complex, Does not Determine the Specificity of ras2 mRNA Binding by the Complex.Doklady. Biochemistry and biophysics · 2024Article
- PCID2 Subunit of theCurrent issues in molecular biology · 2023Article
- Structure of the Sac3 RNA-binding M-region in the Saccharomyces cerevisiae TREX-2 complex.Nucleic acids research · 2017Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
unlabelledTranscription-export complex 2 (TREX-2 complex) facilitates the localization of actively transcribing genes to the nuclear periphery and also functions to contribute to the generation of export-competent mRNPs through interactions with the general mRNA nuclear export factor Mex67:Mtr2. The TREX-2 complex is based on a Sac3 scaffold to which Thp1, Sem1, Cdc31, and Sus1 bind. TREX-2 can be subdivided into two modules: one, in which Thp1 and Sem1 bind to the Sac3(M) region (residues ∼100-551), and the other in which Cdc31 and two Sus1 chains bind to the Sac3(CID) region (residues ∼710-805). Complementary structural analyses using X-ray crystallography, electron microscopy, and small-angle X-ray scattering of the Saccharomyces cerevisiae TREX-2 complex, expressed using Baculovirus-infected Sf9 cells, have indicated that the TPR-like repeats of the Sac3(M) region extend considerably further towards the N-terminus than previously thought, and also indicate that this region and Sac3(CID):Sus1:Cdc31 region of the S. cerevisiae complex are structurally independent. Although the density visible accounted for only ∼100kDa, a 5.3Å resolution cryo-EM reconstruction was obtained of the M-region of TREX-2 that showed an additional three putative α-helices extending towards the Sac3 N-terminus and these helices were also seen in a 4.9Å resolution structure obtained by X-ray crystallography. SUMMARY STATEMENT: We describe the expression, purification and structural characterization of the S. cerevisiae TREX-2 complex and demonstrate that the Sac3 TPR-like repeats are more extensive than previously thought and that the M- and CID-regions do not appear to have a defined spatial orientation.
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