ArticleActa crystallographica. Section F, Structural biology communications2016
Crystallographic analysis of a subcomplex of the transsulfursome with tRNA for Cys-tRNA(Cys) synthesis.
Article in Acta crystallographica. Section F, Structural biology communications, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 3 citations in OpenAlex.
- Cross-editing by a tRNA synthetase allows vertebrates to abundantly express mischargeable tRNA without causing mistranslation.Nucleic acids research · 2020Article
- Structural basis for tRNA-dependent cysteine biosynthesis.Nature communications · 2017Article
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7 authors at 1 institution in 1 country.
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Abstract
In most organisms, Cys-tRNA(Cys) is directly synthesized by cysteinyl-tRNA synthetase (CysRS). Many methanogenic archaea, however, use a two-step, indirect pathway to synthesize Cys-tRNA(Cys) owing to a lack of CysRS and cysteine-biosynthesis systems. This reaction is catalyzed by O-phosphoseryl-tRNA synthetase (SepRS), Sep-tRNA:Cys-tRNA synthase (SepCysS) and SepRS/SepCysS pathway enhancer (SepCysE) as the transsulfursome, in which SepCysE connects both SepRS and SepCysS. On the transsulfursome, SepRS first ligates an O-phosphoserine to tRNA(Cys), and the mischarged intermediate Sep-tRNA(Cys) is then transferred to SepCysS, where it is further modified to Cys-tRNA(Cys). In this study, a subcomplex of the transsulfursome with tRNA(Cys) (SepCysS-SepCysE-tRNA(Cys)), which is involved in the second reaction step of the indirect pathway, was constructed and then crystallized. The crystals diffracted X-rays to a resolution of 2.6 Å and belonged to space group P6522, with unit-cell parameters a = b = 107.2, c = 551.1 Å. The structure determined by molecular replacement showed that the complex consists of a SepCysS dimer, a SepCysE dimer and one tRNA(Cys) in the asymmetric unit.
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