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@PHDTHESIS{Haan:61334,
author = {Haan, Claude},
othercontributors = {Heinrich, Peter C.},
title = {{U}ntersuchungen zur gp130/{J}ak1-{I}nteraktion},
address = {Aachen},
publisher = {Publikationsserver der RWTH Aachen University},
reportid = {RWTH-CONV-123007},
pages = {IV, 83 S. : Ill., graph. Darst.},
year = {2000},
note = {Aachen, Techn. Hochsch., Diss., 2000},
abstract = {The common receptor subunit gp130 is essential for cellular
responses following stimulation with IL-6-type cytokines.
Signal transduction via gp130 occurs through activation of
constitutively associated kinases of the Janus family (Jak1,
Jak2 and Tyk2). Since Jak1 plays the most important role the
interaction of gp130 with Jak1 was investigated by means of
mutagenesis of both molecules. The minimal binding region of
Jak1 to gp130 was restricted to the membrane proximal 68
amino acids. W666 and Box2 were shown to be crucial for Jak
binding and further signal transduction. Interestingly, the
amino acid exchanges W652A, P671A/P672A and F676A showed
that Jak1 binding is necessary but not sufficient for STAT
activation. Amino acid exchanges were also introduced into
the N-terminal domain of Jak1 and the binding of Jak1 to
gp130 was examined using a coimmunoprecipitation assay. A
structure prediction model postulating a b-grasp domain in
Jak1 was verified using a mutagenesis aproach. Mutations
L80A, L80A/Y81A and Y81A/D82A induce the loss of Jak1
binding to gp130. These mutants are located in loop 4
between two b-strands in the predicted b-grasp-model
indicating that this region is crucial for Jak1 binding to
gp130. Exchange of Y107 to alanine also abrogates Jak1
association to the receptor and was predicted to be
structurally important in the b -grasp-model.},
cin = {100000},
ddc = {570},
cid = {$I:(DE-82)100000_20140620$},
typ = {PUB:(DE-HGF)11},
urn = {urn:nbn:de:hbz:82-opus-145},
url = {https://publications.rwth-aachen.de/record/61334},
}