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@ARTICLE{Groves:399602,
author = {Groves, Matthew R. and Schroer, Carsten F. E. and
Middleton, Adam J. and Lunev, Sergey and Danda, Natasha and
Ali, Ameena M. and Marrink, Siewert J. and Williams, Chris},
title = {{S}tructural insights into {K}48-linked ubiquitin chain
formation by the {P}ex4p-{P}ex22p complex},
journal = {Biochemical and biophysical research communications},
volume = {496},
number = {2},
issn = {0006-291X},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {PUBDB-2018-00778},
pages = {562 - 567},
year = {2017},
abstract = {Pex4p is a peroxisomal E2 involved in ubiquitinating the
conserved cysteine residue of the cycling receptor protein
Pex5p. Previously, we demonstrated that Pex4p from the yeast
Saccharomyces cerevisiae binds directly to the peroxisomal
membrane protein Pex22p and that this interaction is vital
for receptor ubiquitination. In addition, Pex22p binding
allows Pex4p to specifically produce lysine 48 linked
ubiquitin chains in vitro through an unknown mechanism. This
activity is likely to play a role in targeting peroxisomal
proteins for proteasomal degradation.Here we present the
crystal structures of Pex4p alone and in complex with Pex22p
from the yeast Hansenula polymorpha. Comparison of the two
structures demonstrates significant differences to the
active site of Pex4p upon Pex22p binding while molecular
dynamics simulations suggest that Pex22p binding facilitates
active site remodelling of Pex4p through an allosteric
mechanism. Taken together, our data provide insights into
how Pex22p binding allows Pex4p to build K48-linked Ub
chains.},
cin = {DOOR},
ddc = {570},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {6G3 - PETRA III (POF3-622)},
pid = {G:(DE-HGF)POF3-6G3},
experiment = {EXP:(DE-H253)P-P11-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29288668},
UT = {WOS:000424313500048},
doi = {10.1016/j.bbrc.2017.12.150},
url = {https://bib-pubdb1.desy.de/record/399602},
}