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@ARTICLE{Wirth:137186,
author = {Wirth, Alexander and Chen-Wacker, Chen and Wu, Yao-Wen and
Gorinski, Nataliya and Filippov, Mikhail A and Pandey,
Ghanshyam and Ponimaskin, Evgeni},
title = {{D}ual lipidation of the brain-specific {C}dc42 isoform
regulates its functional properties.},
journal = {Biochemical journal},
volume = {456},
number = {3},
issn = {0264-6021},
address = {London},
publisher = {Portland Press67261},
reportid = {DZNE-2020-03508},
pages = {311-322},
year = {2013},
abstract = {Cdc42 (cell division cycle 42) is a member of the Rho
GTPase family which regulates a variety of cellular
activities by controlling actin cytoskeleton and gene
expression. Cdc42 is expressed in the form of two splice
variants. The canonical Cdc42 isoform is prenylated
(Cdc42-prenyl), whereas the brainspecific isoform can be
palmitoylated (Cdc42-palm). In the present study we have
demonstrated palmitoylation of endogenous Cdc42 in rodent
and human brains and identified Cys(188) and Cys(189) as
acylation sites of Cdc42-palm. Moreover, we have shown that
Cys(188) can also be prenylated. Analysis of
acylation-deficient mutants revealed that lipidation of
Cys(188) is essential for proper membrane binding of
Cdc42-palm as well as for Cdc42-mediated regulation of gene
transcription and induction of densely packed filopodia in
neuroblastoma cells. We also found that Cdc42-prenyl is a
dominant splice variant in a wide range of commonly used
cell lines as well as in the cerebellum, whereas Cdc42-palm
is the main Cdc42 isoform in hippocampus, where it is
critically involved in the formation of dendritic filopodia
and spines. Replacement of endogenous Cdc42 by its
acylation-deficient mutants revealed the importance of
Cdc42-palm lipidation for its morphogenic and synaptogenic
effects in neurons. These findings demonstrate that dual
lipidation of Cdc42-palm represents an important regulator
of morphogenic signalling in hippocampal neurons.},
keywords = {Animals / Cell Line, Tumor / Cerebellum: cytology /
Cerebellum: metabolism / Cysteine: genetics / Cysteine:
metabolism / Dendrites: genetics / Dendrites: metabolism /
Hippocampus: cytology / Hippocampus: metabolism / Humans /
Isoenzymes: genetics / Isoenzymes: metabolism / Lipoylation:
physiology / Mice / Organ Specificity: physiology / Protein
Prenylation: physiology / Pseudopodia: genetics /
Pseudopodia: metabolism / Transcription, Genetic: physiology
/ cdc42 GTP-Binding Protein: genetics / cdc42 GTP-Binding
Protein: metabolism / Cdc42 protein, mouse (NLM Chemicals) /
Isoenzymes (NLM Chemicals) / cdc42 GTP-Binding Protein (NLM
Chemicals) / Cysteine (NLM Chemicals)},
cin = {AG Dityatev},
ddc = {540},
cid = {I:(DE-2719)1310007},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:24059268},
doi = {10.1042/BJ20130788},
url = {https://pub.dzne.de/record/137186},
}