About: Novel methylation of Hexim1 and cyclin composition of positive trancription elongation factor b (P-TEFb) regulate kinase activity of cdk9     Goto   Sponge   NotDistinct   Permalink

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  • Our preliminary experiments demonstrate that in eukaryotic cells novel posttranslational modification of proteins, methylation of glutamic acid (E), found in the P-TEFb binding domain of Hexim1, directs association of P-TEFb with 7SK RNP and thus kinase activity of cdk9. This project will in detail characterize the functional importance of this modification for the regulation of kinase activity of cdk9 furthermore, we plan to identify the first eukaryotic methyltransferase of glutamic acid and define its role in the regulation of association of P-TEFb with 7SK RNP. In the last stage of the project, we plan to isolate the protein complexes associated with cyclin T1, cyclin T2 and cyclin K. The protein composition of individual cyclin complexes may be the very first step in answering the intriguing question regarding the physiological role of cyclinT1, cyclin T2 and cyclin K. (en)
  • Popis regulace kinázové aktivity cdk9, charakterizace nové postranslační modifikace proteinu - metylace glutamové kyseliny, identifikace příslušné metyltransferázy, definice složení proteinových komplexů cyklinu T1, T2 a K.
Title
  • Novel methylation of Hexim1 and cyclin composition of positive trancription elongation factor b (P-TEFb) regulate kinase activity of cdk9 (en)
  • Nový typ metylace Heximu1 a cyklinové složení positivního transkripčního elongačního faktoru b (P-TEFb) regulují kinázovou aktivitu cdk9
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  • ME09047
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  • Transkription; elongation; P-TEFb; cdk9; Hexim1; cyklin T1; T2; K; methylation; methyltransferase (en)
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  • We clerified a new regulation of P-TEFb complex; the finding that Cycklin K is not part of P-TEFb complex, but associates with Cdk12, defined new protein complex regulating activity of RNA polymerase II (en)
  • Podarilo se nam vyjasnit novou regulaci P-TEFb komplexu; zjisteni, ze Cyklin K neni soucasti P-TEFb komplexu, ale asociuje s Cdk12, vedlo k definici zcela noveho komplexu ktery reguluje funkci RNA polymerase II. (cs)
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  • K
  • P-TEFb
  • methylation
  • Hexim1
  • T2
  • cdk9
  • cyklin T1
  • elongation
  • Transkription
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