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@ARTICLE{Wojtowicz:811935,
author = {Wojtowicz, H. and Prochnicka-Chalufour, A. and de Amorim,
G. C. and Roudenko, O. and Simenel, C. and Malki, I. and
Pehau-Arnaudet, G. and Gubellini, F. and Koutsioumpas,
Alexandros and Perez, J. and Delepelaire, P. and Delepierre,
M. and Fronzes, R. and Izadi-Pruneyre, N.},
title = {{S}tructural basis of the signalling through a bacterial
membrane receptor {H}as{R} deciphered by an integrative
approach},
journal = {Biochemical journal},
volume = {473},
number = {14},
issn = {1470-8728},
address = {London},
publisher = {Portland Press79505},
reportid = {FZJ-2016-04249},
pages = {2239 - 2248},
year = {2016},
abstract = {Bacteria use diverse signalling pathways to adapt gene
expression to external stimuli. In Gram-negative bacteria,
the binding of scarce nutrients to membrane transporters
triggers a signalling process that up-regulates the
expression of genes of various functions, from uptake of
nutrient to production of virulence factors. Although
proteins involved in this process have been identified,
signal transduction through this family of transporters is
not well understood. In the present study, using an
integrative approach (EM, SAXS, X-ray crystallography and
NMR), we have studied the structure of the haem transporter
HasR captured in two stages of the signalling process, i.e.
before and after the arrival of signalling activators (haem
and its carrier protein). We show for the first time that
the HasR domain responsible for signal transfer: (i) is
highly flexible in two stages of signalling; (ii) extends
into the periplasm at approximately 70–90 Å (1 Å=0.1 nm)
from the HasR β-barrel; and (iii) exhibits local
conformational changes in response to the arrival of
signalling activators. These features would favour the
signal transfer from HasR to its cytoplasmic membrane
partners.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106},
pnm = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000393707500022},
pubmed = {pmid:27208170},
doi = {10.1042/BCJ20160131},
url = {https://juser.fz-juelich.de/record/811935},
}