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Phosphate binding in the active centre of tomato multifunctional nuclease TBN1 and analysis of superhelix formation by the enzyme
J. Stránský, T. Koval', T. Podzimek, A. Týcová, P. Lipovová, J. Matoušek, P. Kolenko, K. Fejfarová, J. Dušková, T. Skálová, J. Hašek, J. Dohnálek,
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články, práce podpořená grantem
NLK
Free Medical Journals
od 2014 do Před 2 roky
PubMed Central
od 2014 do Před 1 rokem
Europe PubMed Central
od 2014 do Před 2 roky
- MeSH
- endodeoxyribonukleasy chemie genetika metabolismus MeSH
- fosfáty metabolismus MeSH
- krystalizace MeSH
- molekulární sekvence - údaje MeSH
- multienzymové komplexy chemie genetika metabolismus MeSH
- rostlinné proteiny chemie genetika metabolismus MeSH
- sekundární struktura proteinů MeSH
- sekvence aminokyselin MeSH
- Solanum lycopersicum enzymologie genetika MeSH
- vazebná místa fyziologie MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Tomato multifunctional nuclease TBN1 belongs to the type I nuclease family, which plays an important role in apoptotic processes and cell senescence in plants. The newly solved structure of the N211D mutant is reported. Although the main crystal-packing motif (the formation of superhelices) is conserved, the details differ among the known structures. A phosphate ion was localized in the active site of the enzyme. The binding of the surface loop to the active centre is stabilized by the phosphate ion, which correlates with the observed aggregation of TBN1 in phosphate buffer. The conserved binding of the surface loop to the active centre suggests biological relevance of the contact in a regulatory function or in the formation of oligomers.
Institute of Biotechnology CAS v v i Vídeňská 1083 142 20 Praha 4 Czech Republic
University of Chemistry and Technology Technická 5 166 28 Praha 6 Czech Republic
Citace poskytuje Crossref.org
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