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A Derived Allosteric Switch Underlies the Evolution of Conditional Cooperativity between HOXA11 and FOXO1.

Cell Rep. 2016 Jun 07;15(10):2097-2108. Epub 2016 May 26
Mauris C Nnamani 1 , Soumya Ganguly 2 , Eric M Erkenbrack 1 , Vincent J Lynch 3 , Laura S Mizoue 4 , Yingchun Tong 1 , Heather L Darling 2 , Monika Fuxreiter 5 , Jens Meiler 6 , Günter P Wagner 7
Mauris C Nnamani 1 , Soumya Ganguly 2 , Eric M Erkenbrack 1 , Vincent J Lynch 3 , Laura S Mizoue 4 , Yingchun Tong 1 , Heather L Darling 2 , Monika Fuxreiter 5 , Jens Meiler 6 , Günter P Wagner 7
+ et al

[No authors listed]

Author information
  • 1 Yale Systems Biology Institute and Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511, USA.
  • 2 Departments of Chemistry, Pharmacology and Biomedical Informatics, Center for Structural Biology and Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37232, USA.
  • 3 Department of Human Genetics, The University of Chicago, 920 E. 58th Street, CLSC 319C, Chicago, IL 60637, USA.
  • 4 Howard Hughes Medical Institute, Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80303, USA.
  • 5 MTA-DE Momentum Laboratory of Protein Dynamics, University of Debrecen, 4032 Debrecen, Nagyerdei krt 98, Hungary.
  • 6 Departments of Chemistry, Pharmacology and Biomedical Informatics, Center for Structural Biology and Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37232, USA. Electronic address: jens.meiler@vanderbilt.edu.
  • 7 Yale Systems Biology Institute and Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511, USA; Department of Obstetrics, Gynecology and Reproductive Science, Yale University Medical School, New Haven, CT 06510, USA; Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI 48201, USA. Electronic address: gunter.wagner@yale.edu.

摘要

Transcription factors (TFs) play multiple roles in development. Given this multifunctionality, it has been assumed that TFs are evolutionarily highly constrained. Here, we investigate the molecular mechanisms for the origin of a derived functional interaction between two TFs, HOXA11 and FOXO1. We have previously shown that the regulatory role of HOXA11 in mammalian endometrial stromal cells requires interaction with FOXO1, and that the physical interaction between these proteins evolved before their functional cooperativity. Here, we demonstrate that the derived functional cooperativity between HOXA11 and FOXO1 is due to derived allosteric regulation of HOXA11 by FOXO1. This study shows that TF function can evolve through changes affecting the functional output of a pre-existing protein complex.

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