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Cited by 204

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Specific CLK Inhibitors from a Novel Chemotype for Regulation of Alternative Splicing

Open access
Fedorov, Oleg, Huber, Kilian, Eisenreich, Andreas, Filippakopoulos, Panagis, King, Oliver, Bullock, Alex N., Szklarczyk, Damian, Jensen, Lars J., Fabbro, Doriano, Trappe, Jörg, Rauch, Ursula, Bracher, Franz, Knapp, Stefan·2011·Chemistry & Biology

Abstract

There is a growing recognition of the importance of protein kinases in the control of alternative splicing. To define the underlying regulatory mechanisms, highly selective inhibitors are needed. Here, we report the discovery and characterization of the dichloroindolyl enaminonitrile KH-CB19, a potent and highly specific inhibitor of the CDC2-like kinase isoforms 1 and 4 (CLK1/CLK4). Cocrystal structures of KH-CB19 with CLK1 and CLK3 revealed a non-ATP mimetic binding mode, conformational changes in helix αC and the phosphate binding loop and halogen bonding to the kinase hinge region. KH-CB19 effectively suppressed phosphorylation of SR (serine/arginine) proteins in cells, consistent with its expected mechanism of action. Chemical inhibition of CLK1/CLK4 generated a unique pattern of splicing factor dephosphorylation and had at low nM concentration a profound effect on splicing of the two tissue factor isoforms flTF (full-length TF) and asHTF (alternatively spliced human TF).

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Metadata

Authors
Fedorov, O., Huber, K., Eisenreich, A., Filippakopoulos, P., King, O., Bullock, A. N., Szklarczyk, D., Jensen, L. J., Fabbro, D., Trappe, J., Rauch, U., Bracher, F., & Knapp, S.
Venue
Chemistry & Biology
Publisher
Elsevier BV
Published
2011-01
Volume
18
Issue
1
Pages
67-76
ISSN
1074-5521 (ISSN-L)
OpenAlex
W2170891294
Cited by
204
References
1
FWCI
6.82
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Specific CLK Inhibitors from a Novel Chemotype for Regulation of Alternative Splicing. https://app.cochat.ai/papers/10.1016/j.chembiol.2010.11.009
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Fedorov, O., Huber, K., Eisenreich, A., Filippakopoulos, P., King, O., Bullock, A. N., Szklarczyk, D., Jensen, L. J., Fabbro, D., Trappe, J., Rauch, U., Bracher, F., & Knapp, S. (2011). Specific CLK Inhibitors from a Novel Chemotype for Regulation of Alternative Splicing. Chemistry & Biology. https://doi.org/10.1016/j.chembiol.2010.11.009

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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