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@ARTICLE{Singh:22825,
author = {Singh, S. and Möckel, L. and Thiagarajan-Rosenkranz, P.
and Wittlich, M. and Willbold, D. and Koenig, B.},
title = {{M}apping the interaction between the cytoplasmic domains
of {HIV}-1 {V}p{U} and human {CD}4 using {NMR}
spectroscopy.},
journal = {The FEBS journal},
volume = {279},
issn = {1742-464X},
address = {Oxford [u.a.]},
publisher = {Wiley-Blackwell},
reportid = {PreJuSER-22825},
pages = {3705 - 3714},
year = {2012},
note = {S. K. Singh is a collegiate of the Jurgen Manchot graduate
school 'Molecules of infection' at the Heinrich Heine
University Dusseldorf. This work was supported by a grant
from the Prasidentenfond der Helmholtz-Gemeinschaft (HGF,
'Virtual Institute of Structural Biology') to D. Willbold.},
abstract = {Viral protein U (VpU) of HIV-1 plays an important role in
downregulation of the main HIV-1 receptor CD4 from the
surface of infected cells. Physical binding of VpU to newly
synthesized CD4 in the endoplasmic reticulum is an early
step in a pathway leading to proteasomal degradation of CD4.
In this study, regions in the cytoplasmic domain of VpU
involved in CD4 binding were identified by NMR spectroscopy.
Amino acids in both helices found in the cytoplasmic region
of VpU in membrane-mimicking detergent micelles experience
chemical shift perturbations upon binding to CD4, whereas
amino acids between the two helices and at the C-terminus of
VpU show no or only small changes, respectively. The
topology of the complex was further studied with
paramagnetic relaxation enhancement. Paramagnetic spin
labels were attached at three sequence positions of a CD4
peptide comprising the transmembrane and cytosolic domains
of the receptor. VpU binds to a membrane-proximal region in
the cytoplasmic domain of CD4.},
keywords = {J (WoSType)},
cin = {ICS-6},
ddc = {540},
cid = {I:(DE-Juel1)ICS-6-20110106},
pnm = {Funktion und Dysfunktion des Nervensystems / BioSoft:
Makromolekulare Systeme und biologische
Informationsverarbeitung},
pid = {G:(DE-Juel1)FUEK409 / G:(DE-Juel1)FUEK505},
shelfmark = {Biochemistry $\&$ Molecular Biology},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22863293},
UT = {WOS:000308928900016},
doi = {10.1111/j.1742-4658.2012.08732.x},
url = {https://juser.fz-juelich.de/record/22825},
}