| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 2021706 | Protein Expression and Purification | 2006 | 7 Pages |
Abstract
The human cyclin-dependent kinase 9 (CDK9) protein was expressed in E. coli BL21 using the pET23a vector at 30 °C. Several milligrams of protein were purified from soluble fraction using ionic exchange and ATP-affinity chromatography. The structural quality of recombinant CDK9 and the estimation of its secondary structure were obtained by circular dichroism. Structural models of CDK9 presented 26% of helices in agreement with the spectra by circular dichroism analysis. This is the first report on human CDK9 expression in Escherichia coli and structure analysis and provides the first step for the development of CDK9 inhibitors.
Related Topics
Life Sciences
Biochemistry, Genetics and Molecular Biology
Biochemistry
Authors
Andreia Machado Leopoldino, Fernanda Canduri, Hamilton Cabral, Magno Junqueira, Alessandra Bernadete Trovó de Marqui, Luciano H. Apponi, Isabel Osório da Fonseca, Gilberto Barbosa Domont, Diógenes S. Santos, Sandro Valentini,