Hemanga Gogoi

• Segura Pena, Dario; Hovet, Oda; Gogoi, Hemanga; Dawicki-Mckenna, Jennine; Wøien, Stine Malene Hansen & Carrer, Manuel [Vis alle 9 forfattere av denne artikkelen] (2023). The structural basis of the multi-step allosteric activation of Aurora B kinase. eLIFE. ISSN 2050-084X. 12. doi: 10.7554/eLife.85328. Fulltekst i vitenarkiv Vis sammendrag

  Aurora B, together with IN-box, the C-terminal part of INCENP, forms an enzymatic complex that ensures faithful cell division. The [Aurora B/IN-box] complex is activated by autophosphorylation in the Aurora B activation loop and in IN-box, but it is not clear how these phosphorylations activate the enzyme. We used a combination of experimental and computational studies to investigate the effects of phosphorylation on the molecular dynamics and structure of [Aurora B/IN-box]. In addition, we generated partially phosphorylated intermediates to analyze the contribution of each phosphorylation independently. We found that the dynamics of Aurora and IN-box are interconnected, and IN-box plays both positive and negative regulatory roles depending on the phosphorylation status of the enzyme complex. Phosphorylation in the activation loop of Aurora B occurs intramolecularly and prepares the enzyme complex for activation, but two phosphorylated sites are synergistically responsible for full enzyme activity.

• Sekulic, Nikolina; Hovet, Oda; Gogoi, Hemanga; Dawicki-McKenna, Jennine; Wøien, Stine Malene Hansen & Carrer, Manuel [Vis alle 8 forfattere av denne artikkelen] (2022). The structural basis of the multi-step allosteric activation of Aurora B kinase. bioRxiv. ISSN 2692-8205.

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