دورية أكاديمية
Characterization and evolutionary implications of the triad Asp-Xxx-Glu in group II phosphopantetheinyl transferases.
| العنوان: | Characterization and evolutionary implications of the triad Asp-Xxx-Glu in group II phosphopantetheinyl transferases. |
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| المؤلفون: | Yue-Yue Wang, Yu-Dong Li, Jian-Bo Liu, Xin-Xin Ran, Yuan-Yang Guo, Ni-Ni Ren, Xin Chen, Hui Jiang, Yong-Quan Li |
| المصدر: | PLoS ONE, Vol 9, Iss 7, p e103031 (2014) |
| بيانات النشر: | Public Library of Science (PLoS), 2014. |
| سنة النشر: | 2014 |
| المجموعة: | LCC:Medicine LCC:Science |
| مصطلحات موضوعية: | Medicine, Science |
| الوصف: | Phosphopantetheinyl transferases (PPTases), which play an essential role in both primary and secondary metabolism, are magnesium binding enzymes. In this study, we characterized the magnesium binding residues of all known group II PPTases by biochemical and evolutionary analysis. Our results suggested that group II PPTases could be classified into two subgroups, two-magnesium-binding-residue-PPTases containing the triad Asp-Xxx-Glu and three-magnesium-binding-residue-PPTases containing the triad Asp-Glu-Glu. Mutations of two three-magnesium-binding-residue-PPTases and one two-magnesium-binding-residue-PPTase indicate that the first and the third residues in the triads are essential to activities; the second residues in the triads are non-essential. Although variations of the second residues in the triad Asp-Xxx-Glu exist throughout the whole phylogenetic tree, the second residues are conserved in animals, plants, algae, and most prokaryotes, respectively. Evolutionary analysis suggests that: the animal group II PPTases may originate from one common ancestor; the plant two-magnesium-binding-residue-PPTases may originate from one common ancestor; the plant three-magnesium-binding-residue-PPTases may derive from horizontal gene transfer from prokaryotes. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1932-6203 |
| العلاقة: | http://europepmc.org/articles/PMC4103896?pdf=renderTest; https://doaj.org/toc/1932-6203Test |
| DOI: | 10.1371/journal.pone.0103031 |
| الوصول الحر: | https://doaj.org/article/67bc11f5573c47ef91b5bccc5729365bTest |
| رقم الانضمام: | edsdoj.67bc11f5573c47ef91b5bccc5729365b |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19326203 |
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| DOI: | 10.1371/journal.pone.0103031 |