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@INBOOK{BatraSafferling:834100,
author = {Batra-Safferling, Renu and Granzin, Joachim},
title = {{T}he {S}tructure of the {P}olar {C}ore {M}utant {R}175{E}
and {I}ts {F}unctional {I}mplications},
address = {Cham},
publisher = {Springer International Publishing},
reportid = {FZJ-2017-04101},
isbn = {978-3-319-57553-7},
pages = {143-158},
year = {2017},
comment = {The Structural Basis of Arrestin Functions},
booktitle = {The Structural Basis of Arrestin
Functions},
abstract = {Mutation of arginine 175 to glutamic acid (R175E), a
central residue in the polar core and previously predicted
as the ‘phosphosensor’, leads to a constitutively active
arrestin that is able to terminate phototransduction by
binding to non-phosphorylated, light-activated rhodopsin .
Crystal structure of a R175E mutant arrestin at 2.7 Å
resolution reveals significant differences compared to the
basal state reported in full-length arrestin structures.
Most striking differences are disruption of hydrogen bond
network in the polar core , and three-element interaction
(between β-strand I, α-helix I, and the C-tail), including
disordering of several residues in the receptor-binding
finger loop and the C-terminus (residues 361–404).
Additionally, R175E structure shows a 7.5° rotation of the
amino and carboxy-terminal domains relative to each other.
Comparison of the crystal structures of basal arrestin and
R175E mutant provides insights into the mechanism of
arrestin activation, where the latter likely represents an
intermediate activation state prior to formation of the
high-affinity complex with the G protein-coupled receptor.},
cin = {ICS-6},
cid = {I:(DE-Juel1)ICS-6-20110106},
pnm = {551 - Functional Macromolecules and Complexes (POF3-551)},
pid = {G:(DE-HGF)POF3-551},
typ = {PUB:(DE-HGF)7},
doi = {10.1007/978-3-319-57553-7_11},
url = {https://juser.fz-juelich.de/record/834100},
}