Academic Journal

Crystallization and preliminary X-ray diffraction analysis of selenophosphate synthetases from Trypanosoma brucei and Leishmania major.

التفاصيل البيبلوغرافية
العنوان: Crystallization and preliminary X-ray diffraction analysis of selenophosphate synthetases from Trypanosoma brucei and Leishmania major.
المؤلفون: Faim, Lívia Maria, e Silva, Ivan Rosa, Dias, Marcio Vinicius Bertacine, Pereira, Humberto D'Muniz, Brandao-Neto, José, da Silva, Marco Túlio Alves, Thiemann, Otavio Henrique
المصدر: Acta Crystallographica: Section F (Wiley-Blackwell); Aug2013, Vol. 69 Issue 8, p864-867, 4p
مصطلحات موضوعية: SELENIUM, ADENOSINE triphosphatase, SELENOCYSTEINE, PROTEOLYSIS, TRYPANOSOMA brucei
مستخلص: Selenophosphate synthetase (SPS) plays an indispensable role in selenium metabolism, being responsible for catalyzing the activation of selenide with adenosine 5′-triphosphate (ATP) to generate selenophosphate, the essential selenium donor for selenocysteine synthesis. Recombinant full-length Leishmania major SPS ( LmSPS2) was recalcitrant to crystallization. Therefore, a limited proteolysis technique was used and a stable N-terminal truncated construct (ΔN- LmSPS2) yielded suitable crystals. The Trypanosoma brucei SPS orthologue ( TbSPS2) was crystallized by the microbatch method using paraffin oil. X-ray diffraction data were collected to resolutions of 1.9 Å for ΔN- LmSPS2 and 3.4 Å for TbSPS2. [ABSTRACT FROM AUTHOR]
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قاعدة البيانات: Complementary Index
الوصف
تدمد:17443091
DOI:10.1107/S1744309113014632