3TNH

CDK9/cyclin T in complex with CAN508

3TNH の概要

• エントリーDOI: 10.2210/pdb3tnh/pdb
• 関連するPDBエントリー: 3TNI 3TNW
• 分子名称: Cyclin-dependent kinase 9, Cyclin-T1, 4-[(E)-(3,5-DIAMINO-1H-PYRAZOL-4-YL)DIAZENYL]PHENOL (3 entities in total)
• 機能のキーワード: kinase, cyclin, phosphtransfer, cyclin t, phosphorylated on threonine 186, transferase-transferase inhibitor complex, transferase/transferase inhibitor
• 由来する生物種: Homo sapiens (human); 詳細
• 細胞内の位置: Nucleus: P50750 O60563
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 68411.75

構造登録者

Baumli, S.,Hole, A.J.,Endicott, J.A. (登録日: 2011-09-01, 公開日: 2012-02-15, 最終更新日: 2024-11-27)

主引用文献

Baumli, S.,Hole, A.J.,Noble, M.E.,Endicott, J.A.
The CDK9 C-helix Exhibits Conformational Plasticity That May Explain the Selectivity of CAN508.
Acs Chem.Biol., 7:811-816, 2012

PubMed Abstract: CDK9 is the kinase of positive transcription elongation factor b and facilitates the transition of paused RNA polymerase II to processive transcription elongation. CDK9 is a validated target for the treatment of cancer, cardiac hypertrophy, and human immunodeficiency virus. Here we analyze different CDK9/cyclin T variants to identify a form of the complex amenable to use in inhibitor design. To demonstrate the utility of this system, we have determined the crystal structures of CDK9/cyclin T and CDK2/cyclin A bound to the CDK9-specific inhibitor CAN508. Comparison of the structures reveals CDK9-specific conformational changes and identifies a CDK9-specific hydrophobic pocket, adjacent to the αC-helix. By comparison with a previously published structure of CDK9/cyclin T/human immunodeficiency virus TAT we find that the CDK9 αC-helix has a degree of conformational variability that has the potential to be exploited for inhibitor design.

PubMed: 22292676
DOI: 10.1021/cb2004516

実験手法

X-RAY DIFFRACTION (3.202 Å)