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CDK11B phosphorylates EIF3F. 4 / 4
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"Results from the present study suggest that phosphorylation of eIF3f by CDK11 may contribute to the regulation of protein synthesis and apoptosis."

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"However, recent studies also demonstrated that CDK11p46 phosphorylates eIF3f, leading to increased association of eIF3f with eIF3 core complex and inhibition of translation [13,15] ."

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"21 During apoptosis, endogenous eIF3f is phosphorylated by CDK11 which is mainly a nuclear protein XREF_BIBR, XREF_BIBR and can assembly with other eIF3 subunits to form nuclear complexes which are involved in functions other than translation initiation, such as ribosome biogenesis that takes place into nucleus."

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"They also demonstrated that endogenous CDK11 p46 immunoprecipitated from apoptotic cells can phosphorylate bacterial recombinant eIF3 p47 in vitro [200] ."