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Tuning of Pectin Methylesterification : PECTIN METHYLESTERASE INHIBITOR 7 modulates the processive activity of co-expressed PECTIN METHYLESTERASE 3 in a pH-dependent manner: pectin methylesterase inhibitor 7 modulates the processive activity of co-expressed pectin methylesterase 3 in a ph-dependent manner

Abstract : Background: PME and PMEI isoforms are co-expressed in Arabidopsis. Their biochemical interaction is yet to be characterized. Results: The processive activity of AtPME3 is regulated by AtPMEI7 in a pH-dependent manner in vitro. Conclusion: AtPMEI7 is a key component of the regulation of AtPME3 activity in planta. Significance: The tuning of AtPME3 activity by AtPMEI7 brings insights into the control of homogalacturonan methylesteri-fication in plant cell walls.
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Fabien Senechal, Mélanie L 'Enfant, Jean-Marc Domon, Emeline Rosiau, Marie-Jeanne Crepeau, et al.. Tuning of Pectin Methylesterification : PECTIN METHYLESTERASE INHIBITOR 7 modulates the processive activity of co-expressed PECTIN METHYLESTERASE 3 in a pH-dependent manner: pectin methylesterase inhibitor 7 modulates the processive activity of co-expressed pectin methylesterase 3 in a ph-dependent manner. Journal of Biological Chemistry, American Society for Biochemistry and Molecular Biology, 2015, 290 (38), pp.23320 - 23335. ⟨10.1074/jbc.M115.639534⟩. ⟨hal-01841080⟩

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