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@ARTICLE{Poetsch:32543,
author = {Poetsch, A. and Rexroth, S. and Heberle, J. and Link, T. A.
and Dencher, N. A. and Seelert, H.},
title = {{C}haracterisation of subunit {II} and its oligomer from
spinach chloroplast {ATP} synthase},
journal = {Biochimica et biophysica acta / Biomembranes},
volume = {1618},
issn = {0005-2736},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {PreJuSER-32543},
pages = {59 - 66},
year = {2003},
note = {Record converted from VDB: 12.11.2012},
abstract = {Proton ATP synthases carry out energy conversion in
mitochondria, chloroplasts, and bacteria. A key element of
the membrane integral motor CFO in chloroplasts is the
oligomer of subunit III: it converts the energy of a
transmembrane electrochemical proton gradient into
rotational movement. To enlighten prominent features of the
structure-function relationship of subunit III from spinach
chloroplasts, new isolation methods were established to
obtain highly pure monomeric and oligomeric subunit III in
milligram quantities. By Fourier-transform infrared (FTIR)
and CD spectroscopy, the predominantly a-helical secondary
structure of subunit III was demonstrated. For monomeric
subunit III, a conformational change was observed when
diluting the SDS-solubilized protein. Under the same
conditions the conformation of the oligomer III did not
change. A mass of 8003 Da for the monomeric subunit III was
determined by MALDI mass spectrometry (MALDI-MS), showing
that no posttranslational modifications occurred. By
ionisation during MALDI-MS, the noncovalent homooligomer
III14 disaggregated into its III monomers. (C) 2003 Elsevier
B.V All rights reserved.},
keywords = {J (WoSType)},
cin = {IBI-2},
ddc = {570},
cid = {I:(DE-Juel1)VDB58},
pnm = {Neurowissenschaften},
pid = {G:(DE-Juel1)FUEK255},
shelfmark = {Biochemistry $\&$ Molecular Biology / Biophysics},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000187163700008},
doi = {10.1016/j.bbamem.2003.10.007},
url = {https://juser.fz-juelich.de/record/32543},
}