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BSU1 protein (Arabidopsis thaliana) - STRING interaction network
"BSU1" - Serine/threonine protein phosphatase family protein in Arabidopsis thaliana
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Known Interactions
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Predicted Interactions
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Gene Fusion
BSU1Serine/threonine protein phosphatase family protein; Phosphatase that acts as a positive regulator of brassinosteroid (BR) signaling. Dephosphorylates BES1, a transcription factor that regulates the expression of BR-response genes, thereby playing an important role in the regulation of response to BRs. Inactivates the negative regulator of BR signaling ASK7/BIN2 by dephosphorylation at ’Tyr-200’; Belongs to the PPP phosphatase family. BSU subfamily (793 aa)    
Predicted Functional Partners:
Protein kinase superfamily protein; Negative regulator in brassinosteroid signal transduction pathway important for plant growth. May be also involved in auxin signaling pathway. Phosphorylates and increases the degradation of BZR1 and BZR2/BES1 by the proteasome. Phosphorylates BHLH150, beet curly top virus C4 and tomato golden mosaic virus AC4 on threonine and serine residues. Upon brassinosteroid signaling, inhibits stomatal development by phosphorylating and inhibiting the MAPKK kinase YDA and the MAPK kinases MKK4 and MKK5; Belongs to the protein kinase superfamily. CMGC Ser/Thr p [...] (380 aa)
Probable serine/threonine-protein kinase At4g35230; Encodes BR-signaling kinase 1 (BSK1), one of the three homologous BR-signaling kinases (BSK1, AT4G35230; BSK2, AT5G46570; BSK3, AT4G00710). Mediates signal transduction from receptor kinase BRI1 by functioning as the substrate of BRI1. Plasma membrane localized (512 aa)
Serine/threonine-protein kinase CDG1; Serine/threonine-protein kinase involved in the positive regulation of brassinosteroid (BR) signaling and plant growth. Mediates BR signal transduction from BRI1 receptor kinase to BSU1 phosphatase. After activation by phosphorylation at Ser-234 by BRI1, CDG1 phosphorylates BSU1 at ’Ser-764’ in the phosphatase domain, increasing the ability of BSU1 to inactivate the negative regulator of BR signaling ASK7/BIN2 by dephosphorylation at ’Tyr- 200’. The full kinase activity of CDG1 is required for its biological function (432 aa)
Uncharacterized protein At4g00710; Encodes BR-signaling kinase 3 (BSK3), one of the three homologous BR-signaling kinases (BSK1, AT4G35230; BSK2, AT5G46570; BSK3, AT4G00710). Mediates signal transduction from receptor kinase BRI1 by functioning as the substrate of BRI1. Plasma membrane localized (489 aa)
Leucine-rich receptor-like protein kinase family protein; Encodes a plasma membrane localized leucine-rich repeat receptor kinase involved in brassinosteroid signal transduction. BRI1 ligand is brassinolide which binds at the extracellular domain. Binding results in phosphorylation of the kinase domain which activates the BRI1 protein leading to BR responses. Residue T-1049 and either S-1044 or T-1045 were essential for kinase function in vitro and normal BRI1 signaling in planta. Although BAK1 and BRI1 alone localize in the plasma membrane, when BAK1 and BRI1 are coexpressed, the hete [...] (1196 aa)
BRI1 kinase inhibitor 1; Encodes a plasma-membrane associated phosphoprotein that interacts directly with the kinase domain of BRI1. It interferes with the interaction between BRI1 with its signalling partner, the plasma membrane localised LRR-receptor kinase BAK1 (337 aa)
Encodes a positive regulator of the brassinosteroid (BR) signalling pathway that mediates both downstream BR responses and negative feedback regulation of BR biosynthesis. There is evidence for phosphorylation-dependent nucleocytoplasmic shuttling of BZR1. GSK3-like kinases (including BIN2), 14-3-3 proteins, and the phosphatase BSU1 seem to participate in this process. Phosphorylation also appears to affect BZR1’s transcriptional activities (336 aa)
Brassinosteroid signalling positive regulator (BZR1) family protein; Positive regulator of brassinosteroid (BR) signaling. Transcription factor that activates target gene expression by binding specifically to the DNA sequence 5’-CANNTG-3’(E box) through its N-terminal domain. Can bind individually to the promoter as a homodimer or synergistically as a heterodimer with BIM1, BIM2 or BIM3. The C-terminal domain is probably involved in transcriptional activation. Recruits the transcription elongation factor IWS1 to control BR-regulated gene expression. Forms a trimeric complex with IWS1 a [...] (357 aa)
Protein phosphatase 2C and cyclic nucleotide-binding/kinase domain-containing protein; Protein serine/threonine phosphatases;protein kinases;catalytics;cAMP-dependent protein kinase regulators;ATP binding;protein serine/threonine phosphatases; Its function is described as cAMP-dependent protein kinase regulator activity, protein kinase activity, protein serine/threonine phosphatase activity, catalytic activity, ATP binding; Involved in protein amino acid phosphorylation, protein amino acid dephosphorylation, N-terminal protein myristoylation, regulation of protein amino acid phosphoryl [...] (1094 aa)
BRASSINOSTEROID INSENSITIVE 1-associated receptor kinase 1; Dual specificity kinase acting on both serine/threonine- and tyrosine-containing substrates. Controls the expression of genes associated with innate immunity in the absence of pathogens or elicitors. Involved in brassinosteroid (BR) signal transduction. Phosphorylates BRI1. May be involved in changing the equilibrium between plasma membrane-located BRI1 homodimers and endocytosed BRI1-BAK1 heterodimers. Interaction with MSBP1 stimulates the endocytosis of BAK1 and suppresses brassinosteroid signaling. Acts in pathogen-associat [...] (662 aa)
Your Current Organism:
Arabidopsis thaliana
NCBI taxonomy Id: 3702
Other names: A. thaliana, Arabidopsis thaliana, Arabidopsis thaliana (L.) Heynh., mouse-ear cress, thale cress, thale-cress
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