Download MendeleyDimerization of long hibernation promoting factor from Staphylococcus aureus: Structural analysis and biochemical characterization.
Usachev, K.S., Fatkhullin, B.F., Klochkova, E.A., Miftakhov, A.K., Golubev, A.A., Bikmullin, A.G., Nurullina, L.I., Garaeva, N.S., Islamov, D.R., Gabdulkhakov, A.G., Lekontseva, N.V., Tishchenko, S.V., Balobanov, V.A., Khusainov, I.S., Yusupov, M.M., Validov, S.Z.(2020) J Struct Biol 209: 107408-107408
- PubMed: 31669310
- DOI: https://doi.org/10.1016/j.jsb.2019.107408
- Primary Citation of Related Structures:
6T7O - PubMed Abstract:
Staphylococcus aureus hibernation promoting factor (SaHPF) is responsible for the formation of 100S ribosome dimers, which in turn help this pathogen to reduce energy spent under unfavorable conditions. Ribosome dimer formation strongly depends on the dimerization of the C-terminal domain of SaHPF (CTD SaHPF ). In this study, we solved the crystal structure of CTD SaHPF at 1.6 Å resolution and obtained a precise arrangement of the dimer interface. Residues Phe 160 , Val 162 , Thr 171 , Ile 173 , Tyr 175 , Ile 185 andThr 187 in the dimer interface of SaHPF protein were mutated and the effects were analyzed for the formation of 100S disomes of ribosomes isolated from S. aureus. It was shown that substitution of any of single residues Phe 160 , Val 162 , Ile 173 , Tyr 175 and Ile 185 in the SaHPF homodimer interface abolished the ribosome dimerization in vitro.
Organizational Affiliation:
Laboratory of Structural Biology, Institute of Fundamental Medicine and Biology, Kazan Federal University, 18 Kremlyovskaya, Kazan 420008, Russian Federation.
