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@ARTICLE{Ohlin:276224,
author = {Ohlin, Mats and von Schantz, Laura and Schrader, Tobias E.
and Ostermann, Andreas and Logan, Derek T. and Fisher, S.
Zoë},
title = {{C}rystallization, neutron data collection, initial
structure refinement and analysis of a xyloglucan heptamer
bound to an engineered carbohydrate-binding module from
xylanase},
journal = {Acta crystallographica / F},
volume = {71},
number = {8},
issn = {2053-230X},
address = {Oxford [u.a.]},
publisher = {Blackwell},
reportid = {FZJ-2015-06689},
pages = {1072 - 1077},
year = {2015},
abstract = {Carbohydrate-binding modules (CBMs) are discrete parts of
carbohydrate-hydrolyzing enzymes that bind specific types of
carbohydrates. Ultra high-resolution X-ray crystallographic
studies of CBMs have helped to decipher the basis for
specificity in carbohydrate-protein interactions. However,
additional studies are needed to better understand which
structural determinants confer which carbohydrate-binding
properties. To address these issues, neutron
crystallographic studies were initiated on one
experimentally engineered CBM derived from a xylanase, X-2
L110F, a protein that is able to bind several different
plant carbohydrates such as xylan, [beta]-glucan and
xyloglucan. This protein evolved from a CBM present in
xylanase Xyn10A of Rhodothermus marinus. The protein was
complexed with a branched xyloglucan heptasaccharide.
Large single crystals of hydrogenous protein (~1.6 mm3) were
grown at room temperature and subjected to H/D exchange.
Both neutron and X-ray diffraction data sets were collected
to 1.6 Å resolution. Joint neutron and X-ray refinement
using phenix.refine showed significant density for residues
involved in carbohydrate binding and revealed the details of
a hydrogen-bonded water network around the binding site.
This is the first report of a neutron structure of a CBM and
will add to the understanding of protein-carbohydrate
binding interactions.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
ddc = {530},
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)BIODIFF-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000359352700026},
pubmed = {pmid:26249702},
doi = {10.1107/S2053230X15011383},
url = {https://juser.fz-juelich.de/record/276224},
}