Gene Symbol: ATB' GAMMA
Description: Protein phosphatase 2A regulatory B subunit family protein
Alias: Protein phosphatase 2A regulatory B subunit family protein
Species: thale cress

Top Publications

  1. Trotta A, Wrzaczek M, Scharte J, Tikkanen M, Konert G, Rahikainen M, et al. Regulatory subunit B'gamma of protein phosphatase 2A prevents unnecessary defense reactions under low light in Arabidopsis. Plant Physiol. 2011;156:1464-80 pubmed publisher
    ..We suggest that the specific B'? subunit of PP2A is functionally connected to CPR5 and operates in the basal repression of defense responses under low irradiance. ..
  2. Tang W, Yuan M, Wang R, Yang Y, Wang C, Oses Prieto J, et al. PP2A activates brassinosteroid-responsive gene expression and plant growth by dephosphorylating BZR1. Nat Cell Biol. 2011;13:124-31 pubmed publisher
  3. Trotta A, Konert G, Rahikainen M, Aro E, Kangasjärvi S. Knock-down of protein phosphatase 2A subunit B'? promotes phosphorylation of CALRETICULIN 1 in Arabidopsis thaliana. Plant Signal Behav. 2011;6:1665-8 pubmed publisher
    ..In pp2a-b’?, strong phosphorylation of CRT 1 may partially imbalance the quality control of protein folding, thereby eliciting ER-stress and premature yellowing in leaves. ..
  4. Matre P, Meyer C, Lillo C. Diversity in subcellular targeting of the PP2A B'eta subfamily members. Planta. 2009;230:935-45 pubmed publisher
    ..The results revealed that the closely related B' subunits are targeting different organelles in plants, and exemplify the usage of the peptide serine-serine-leucine as a PTS1 peroxisomal signaling peptide. ..
  5. Haynes J, Hartung A, Hendershot J, Passingham R, Rundle S. Molecular characterization of the B' regulatory subunit gene family of Arabidopsis protein phosphatase 2A. Eur J Biochem. 1999;260:127-36 pubmed
  6. Rahikainen M, Trotta A, Alegre S, Pascual J, Vuorinen K, Overmyer K, et al. PP2A-B'? modulates foliar trans-methylation capacity and the formation of 4-methoxy-indol-3-yl-methyl glucosinolate in Arabidopsis leaves. Plant J. 2017;89:112-127 pubmed publisher
    ..These findings highlight the key regulatory role of PP2A-B'? in methionine metabolism and provide a previously unrecognized perspective for metabolic engineering of glucosinolate metabolism in cruciferous plants. ..
  7. Konert G, Trotta A, Kouvonen P, Rahikainen M, Durian G, Blokhina O, et al. Protein phosphatase 2A (PP2A) regulatory subunit B'γ interacts with cytoplasmic ACONITASE 3 and modulates the abundance of AOX1A and AOX1D in Arabidopsis thaliana. New Phytol. 2015;205:1250-63 pubmed publisher
    ..We conclude that PP2A-B'γ-dependent regulatory actions modulate the functional status of metabolic enzymes that essentially contribute to intracellular ROS signalling and metabolic homeostasis in plants. ..
  8. Wang R, Liu M, Yuan M, Oses Prieto J, Cai X, Sun Y, et al. The Brassinosteroid-Activated BRI1 Receptor Kinase Is Switched off by Dephosphorylation Mediated by Cytoplasm-Localized PP2A B' Subunits. Mol Plant. 2016;9:148-157 pubmed publisher
  9. Xu Y, Wang B, Zhu Y. Identification of proteins expressed at extremely low level in Arabidopsis leaves. Biochem Biophys Res Commun. 2007;358:808-12 pubmed
    ..Our results suggest that polyU or similar media may be combined with 2-DE techniques to identify cellular proteins with extremely low transcription levels to fulfill specific research needs. ..

More Information


  1. Heidari B, Nemie Feyissa D, Kangasjärvi S, Lillo C. Antagonistic regulation of flowering time through distinct regulatory subunits of protein phosphatase 2A. PLoS ONE. 2013;8:e67987 pubmed publisher
    ..In conclusion PP2A is both a positive and negative regulator of flowering time, depending on the type of regulatory subunit involved. ..
  2. Konert G, Rahikainen M, Trotta A, Durian G, Salojärvi J, Khorobrykh S, et al. Subunits B'γ and B'ζ of protein phosphatase 2A regulate photo-oxidative stress responses and growth in Arabidopsis thaliana. Plant Cell Environ. 2015;38:2641-51 pubmed publisher