Nuclear localized transcription factor kinase and diagnostic ass

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving antigen-antibody binding – specific binding protein...

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435 4, 435 74, G01N 3353, G01N 33573, C12Q 100

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057233004

ABSTRACT:
New nuclear kinases that are regulated by signal transduction and that participate in phosphorylation cascades which regulate transcription and related methods for regulating transcription. The novel nuclear kinases play a vital role in gene expression, particularly with regard to leukemia in humans. The kinase is (i) substantially exclusively intranuclearly localized; (ii) capable of autophosphorylation; (iii) selectively bindable with antibodies raised against the RING3 portion of GST-RING3; (iv) of a molecular weight of from about 82.5 to about 92.7 kilodaltons; and (v) includes peptide sequences Asp-Ser-Asn Pro-Asp-Glu-Ile-Glu-Ile-Asp-Phe-Glu-Thr-Leu-Lys-Pro-Thr-Thr-Leu (SEQ ID NO: 1) and Ala-Val-His-Glu-Gln-Leu-Ala-Ala-Leu-Ser-Gln-Ala-Pro (SEQ ID NO: 2). The invention features a method of detecting leukemic cells in a biological sample, the method includes measuring the activity of a RING3-related kinase in the sample, an increase in the activity relative to a control being indicative of the presence of leukemic cells.

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