| ŠTĚPÁN, Jakub, Ivo KABELKA, Jaroslav KOČA a Petr KULHÁNEK. Behavior of BsoBI endonuclease in the presence and absence of DNA. Journal of Molecular Modeling. New York: Springer, 2018, roč. 24, č. 1, s. 22-31. ISSN 1610-2940. Dostupné z: https://dx.doi.org/10.1007/s00894-017-3557-8. |
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@article{1409455,
author = {Štěpán, Jakub and Kabelka, Ivo and Koča, Jaroslav and Kulhánek, Petr},
article_location = {New York},
article_number = {1},
doi = {http://dx.doi.org/10.1007/s00894-017-3557-8},
keywords = {Conformational change; Enzyme opening; Molecular dynamics; Metadynamics},
language = {eng},
issn = {1610-2940},
journal = {Journal of Molecular Modeling},
title = {Behavior of BsoBI endonuclease in the presence and absence of DNA},
url = {https://link.springer.com/article/10.1007%2Fs00894-017-3557-8},
volume = {24},
year = {2018}
}
TY - JOUR
ID - 1409455
AU - Štěpán, Jakub - Kabelka, Ivo - Koča, Jaroslav - Kulhánek, Petr
PY - 2018
TI - Behavior of BsoBI endonuclease in the presence and absence of DNA
JF - Journal of Molecular Modeling
VL - 24
IS - 1
SP - 22
EP - 22
PB - Springer
SN - 16102940
KW - Conformational change
KW - Enzyme opening
KW - Molecular dynamics
KW - Metadynamics
UR - https://link.springer.com/article/10.1007%2Fs00894-017-3557-8
N2 - BsoBI is a type II restriction endonuclease belonging to the EcoRI family. There is only one previously published X-ray structure for this endonuclease: it shows a homodimer of BsoBI completely encircling DNA in a tunnel. In this work, molecular dynamics simulations were employed to elucidate possible ways in which DNA is loaded into this complex prior to its cleavage. We found that the dimer does not open spontaneously when DNA is removed from the complex on the timescale of our simulations (similar to 0.5 mu s). A biased simulation had to be used to facilitate the opening, which revealed a possible way for the two catalytic domains to separate. The alpha-helices connecting the catalytic and helical domains were found to act as a hinge during the separation. In addition, we found that the opening of the BsoBI dimer was influenced by the type of counterions present in the environment. A reference simulation of the BsoBI/DNA complex further showed spontaneous reorganization of the active sites due to the binding of solvent ions, which led to an active-site structure consistent with other experimental structures of type II restriction endonucleases determined in the presence of metal ions.
ER -
ŠTĚPÁN, Jakub, Ivo KABELKA, Jaroslav KOČA a Petr KULHÁNEK. Behavior of BsoBI endonuclease in the presence and absence of DNA. \textit{Journal of Molecular Modeling}. New York: Springer, 2018, roč.~24, č.~1, s.~22-31. ISSN~1610-2940. Dostupné z: https://dx.doi.org/10.1007/s00894-017-3557-8.
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