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@ARTICLE{Gushchin:874733,
author = {Gushchin, Ivan and Melnikov, Igor and Polovinkin, Vitaly
and Ishchenko, Andrii and Gordeliy, Valentin},
title = {{C}rystal {S}tructure of a {P}roteolytic {F}ragment of the
{S}ensor {H}istidine {K}inase {N}ar{Q}},
journal = {Crystals},
volume = {10},
number = {3},
issn = {2073-4352},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2020-01642},
pages = {149 -},
year = {2020},
abstract = {Two-component signaling systems (TCSs) are a large and
important class of sensory systems in bacteria, archaea, and
some eukaryotes, yet their mechanism of action is still not
fully understood from the structural point of view. Many TCS
receptors are elongated flexible proteins with transmembrane
(TM) regions, and are difficult to work with. Consequently,
truncated fragments of the receptors are often used in
structural studies. However, it is not fully clear whether
the structures of the fragments correspond well to their
native structures in the context of full-length proteins.
Recently, we crystallized a fragment of Escherichia coli
nitrate/nitrite sensor histidine kinase, NarQ, encompassing
the sensor, TM, and HAMP domains. Here we report that a
smaller proteolytic fragment consisting of the sensor and TM
domains can also be crystallized using the in meso approach.
The structure of the fragment is similar to the previously
determined one, with minor differences in the vicinity of
the truncation site. The results show that the
crystallization of such sensor–TM fragments can be
accomplished and can provide information on the packing of
transmembrane helices, albeit limited, and that the
proteolysis may or may not be a problem during
crystallization.},
cin = {IBI-7},
ddc = {540},
cid = {I:(DE-Juel1)IBI-7-20200312},
pnm = {552 - Engineering Cell Function (POF3-552)},
pid = {G:(DE-HGF)POF3-552},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000523512100051},
doi = {10.3390/cryst10030149},
url = {https://juser.fz-juelich.de/record/874733},
}