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@ARTICLE{Sengupta:57344,
author = {Sengupta, K. and Limozin, L. and Tristl, M. and Haase, I.
and Fischer, M. and Sackmann, E.},
title = {{C}oupling artificial actin cortices to bio-functionalised
lipid monolayers},
journal = {Langmuir},
volume = {22},
issn = {0743-7463},
address = {Washington, DC},
publisher = {ACS Publ.},
reportid = {PreJuSER-57344},
pages = {5776 - 5785},
year = {2006},
note = {Record converted from VDB: 12.11.2012},
abstract = {We report the assembly of protein supramolecular structures
at an air-water interface and coupling of artificial actin
cortices to such structures. The coupling strategies adopted
include electrostatic binding of actin to monolayers doped
with lipids, exposing positively charged poly(ethylene
glycol) headgroups; binding of biotinylated actin to lipids
carrying biotin headgroups through avidin; binding of actin
to membranes through biotinylated hisactophilin (a cellular
actin-membrane coupler) using an avidin-biotin linkage; and
coupling of actin to membranes carrying chelating lipids
through a 15-nm-diameter protein capsid (bacterial lumazine
synthase or LuSy) exhibiting histidine tags (which bind both
to actin and to the chelating lipid). The distribution of
the proteins in a direction normal to the interface was
measured by neutron reflectivity under different conditions
of pH and ionic strength. In the case of the first three
binding methods, the thickness of the actin film was found
to correspond to a single actin filament. Multilayers of
actin could be formed only by using the multifunctional LuSy
couplers that exhibit 60 hexahistidine tags and can thus act
as actin cross-linkers. The LuSy-mediated binding can be
reversibly switched by pH variations.},
keywords = {Actins: chemistry / Animals / Binding Sites / Lipid
Bilayers: chemistry / Lipids: chemistry / Microfilament
Proteins: chemistry / Models, Molecular / Multienzyme
Complexes: chemistry / Multiprotein Complexes: chemistry /
Neutrons / Protein Binding / Protozoan Proteins: chemistry /
Static Electricity / Surface Properties / Actins (NLM
Chemicals) / Lipid Bilayers (NLM Chemicals) / Lipids (NLM
Chemicals) / Microfilament Proteins (NLM Chemicals) /
Multienzyme Complexes (NLM Chemicals) / Multiprotein
Complexes (NLM Chemicals) / Protozoan Proteins (NLM
Chemicals) / hisactophilin protein, Protozoan (NLM
Chemicals) / 6,7-dimethyl-8-ribityllumazine synthase (NLM
Chemicals) / J (WoSType)},
cin = {ISG-4},
ddc = {670},
cid = {I:(DE-Juel1)VDB421},
pnm = {Kondensierte Materie},
pid = {G:(DE-Juel1)FUEK414},
shelfmark = {Chemistry, Multidisciplinary / Chemistry, Physical /
Materials Science, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:16768508},
UT = {WOS:000238217000044},
doi = {10.1021/la053310+},
url = {https://juser.fz-juelich.de/record/57344},
}