scholarly journals The NCI-Nature Pathway Interaction Database: A cell signaling resource.

Author(s):  
Shiva Krupa ◽  
Kira Anthony ◽  
Jeffrey Buchoff ◽  
Matthew Day ◽  
Timo Hannay ◽  
...  
2010 ◽  
Author(s):  
Carl F. Schaefer ◽  
Kira Anthony ◽  
Mhairi A. Skinner ◽  
Jeffrey R. Buchoff ◽  
Matthew Day ◽  
...  

2011 ◽  
Author(s):  
Kira Anthony ◽  
Mhairi A. Skinner ◽  
Jeffrey R. Buchoff ◽  
Nicola McCarthy ◽  
Carl F. Schaefer ◽  
...  

2008 ◽  
Vol 37 (suppl_1) ◽  
pp. D674-D679 ◽  
Author(s):  
Carl F. Schaefer ◽  
Kira Anthony ◽  
Shiva Krupa ◽  
Jeffrey Buchoff ◽  
Matthew Day ◽  
...  

Author(s):  
Carl Schaefer ◽  
Kira Anthony ◽  
Shiva Krupa ◽  
Jeffrey Buchoff ◽  
Matthew Day ◽  
...  

2019 ◽  
Author(s):  
Keiei Kumon ◽  
Masahiro Higashi ◽  
Shinji Saito ◽  
Shigehiko Hayashi

Many enzyme molecules exhibit characteristic global and slow dynamics which furnish them with allostery realizing remarkable molecular functionalities more than simple chemical catalysis. However, molecular mechanism of a catalytic reaction associated with the molecular flexibility of enzymes is not well-understood. Here we report a hybrid molecular simulation study on GTPase activity of a Ras-GAP protein complex for cell signaling termination. We unveiled that extensive conformational changes of the protein complex and exclusion of internal water molecules are induced upon the transition state (TS) formation in the catalytic reaction and significantly lower the reaction activation free energy. We also revealed that tumor-related mutations perturb those conformational changes upon the TS formation, leading to reduction of the catalytic activity. The findings of the remarkably dynamic protein conformation directly linking to the catalytic reaction have broad implications for understanding of enzyme mechanism and for developments of allosteric drugs and novel catalysts.


Cell ◽  
1990 ◽  
Vol 61 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Seung K. Kim ◽  
Dale Kaiser

Cells ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 2264
Author(s):  
Jolanda. J.D. de Roo ◽  
Frank. J.T. Staal

Hematopoietic stem cells (HSCs) develop at several anatomical locations and are thought to undergo different niche regulatory cues originating from highly conserved cell signaling pathways, such as Wnt, Notch, TGF-β family, and Hedgehog signaling. Most insight into these pathways has been obtained by reporter models and loss- or gain of function experiments, yet results differ in many cases according to the approach. In this review, we discuss existing murine reporter models regarding these pathways, considering the genetic constructs and reporter proteins in the context of HSC studies; yet these models are relevant for all other stem cell systems. Lastly, we describe a multi-reporter model to properly study and understand the cross-pathway interaction and how reporter models are highly valuable tools to understand complex signaling dynamics in stem cells.


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