Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Shaggy-related protein kinase iota; Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in vitro. May mediate extracellular signals to regulate transcription in differentiating cells (By similarity).

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

BES1/BZR1 homolog protein 2.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Transcription factor BIM1; Positive brassinosteroid-signaling protein. Transcription factor that bind specifically to the DNA sequence 5'-CANNTG-3'(E box). Can bind individually to the promoter as a homodimer or synergistically as a heterodimer with BZR2/BES1. Does not itself activate transcription but enhances BZR2/BES1-mediated target gene activation.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

BRI1 kinase inhibitor 1; Negative regulator of brassinosteroid signaling. When associated to the membrane, limits the interaction of BRI1 with BAK1 by binding to the kinase-inactive form of BRI1.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Protein BRASSINOSTEROID INSENSITIVE 1; Receptor with a dual specificity kinase activity acting on both serine/threonine- and tyrosine-containing substrates. Regulates, in response to brassinosteroid binding, a signaling cascade involved in plant development, including expression of light- and stress-regulated genes, promotion of cell elongation, normal leaf and chloroplast senescence, and flowering. Binds brassinolide, and less effectively castasterone, but not 2,3,22,23-O-tetramethylbrassinolide or ecdysone. May be involved in a feedback regulation of brassinosteroid biosynthesis. Pho [...]

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Serine/threonine-protein kinase BSK1; Serine/threonine kinase that acts as positive regulator of brassinosteroid (BR) signaling downstream of the receptor kinase BRI1. Mediates signal transduction from BRI1 by functioning as substrate of BRI1. Functions as a positive regulator of plant immunity. May be involved in the regulation of pattern-triggered immunity (PTI) downstream of the flagellin receptor FLS2. Possesses kinase activity in vitro. Kinase activity is required for its function in innate immunity.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Serine/threonine-protein kinase BSK3; Probable serine/threonine kinase that acts as positive regulator of brassinosteroid (BR) signaling downstream of the receptor kinase BRI1. Mediates signal transduction from BRI1 by functioning as substrate of BRI1. Functions redundantly with BSK4, BSK6, BSK7 and BSK8.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Serine/threonine-protein kinase BSK8; Probable serine/threonine kinase that acts as positive regulator of brassinosteroid (BR) signaling downstream of the receptor kinase BRI1. Functions redundantly with BSK3, BSK4, BSK6 and BSK7. Involved in the regulation of sucrose-phosphate synthase 1 (SPS1) in the context of sucrose resuply after starvation. Activates BSL2, a phosphatase that may dephosphorylate SPS1, leading to the activation of SPS1 ; Belongs to the protein kinase superfamily. Ser/Thr protein kinase family.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Serine/threonine-protein phosphatase BSL3; Phosphatase involved in elongation process, probably by acting as a regulator of brassinolide signaling.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Serine/threonine-protein phosphatase BSU1; 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'.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Protein BRASSINAZOLE-RESISTANT 1; Transcriptional repressor that binds to the brassinosteroid (BR) response element (BRRE) 5'-CGTG(T/C)G-3' in gene promoter. Regulates positively the brassinosteroid-signaling pathway. Mediates downstream growth responses and negative feedback regulation of brassinosteroid biosynthesis. Promotes growth. Modulates ovule initiation and development by monitoring the expression of genes related to ovule development (e.g. HLL, ANT, and AP2).

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Protein BRASSINAZOLE-RESISTANT 2; 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 and ASHH2/SDG8 to regulate BR-reg [...]

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Cytochrome P450 734A1; Cytochrome P450 involved in brassinosteroids (BRs) inactivation and regulation of BRs homeostasis. Inactivates the BRs castasterone and brassinolide through carbon 26 hydroxylation. Acts in association with CYP72C1 to inactivate BRs and modulate photomorphogenesis.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Cytochrome P450 85A1; Catalyzes the C6-oxidation step in brassinosteroids biosynthesis. Converts 6-deoxocastasterone to castasterone. May also convert 6-deoxoteasterone to teasterone, 3-dehydro-6-deoxoteasterone to 3-dehydroteasterone, and 6-deoxotyphasterol to typhasterol.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Cytochrome P450 85A2; Catalyzes the C6-oxidation step in brassinosteroids biosynthesis. Converts 6-deoxocastasterone to castasterone, and castasterone to brassinolide. May also convert 6-deoxoteasterone to teasterone, 3-dehydro-6-deoxoteasterone to 3-dehydroteasterone, and 6- deoxotyphasterol to typhasterol; Belongs to the cytochrome P450 family.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Cytochrome P450 90A1.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Cytochrome P450 90B1; Catalyzes the C22-alpha-hydroxylation step in brassinosteroids biosynthesis. Converts campestanol to 6- deoxocathasterone and 6-oxocampestanol to cathasterone.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

3-epi-6-deoxocathasterone 23-monooxygenase CYP90C1; Involved in brassinosteroid (BR) biosynthesis. Converts typhasterol to castasterone and 6-deoxotyphasterol to 6-deoxocastasterone. C-23 hydroxylase that converts directly (22S,24R)- 22-hydroxy-5-alpha-ergostan-3-one and 3-epi-6-deoxocathasterone to 3- dehydro-6-deoxoteasterone and 6-deoxotyphasterol, respectively. These C-23 hydroxylation shortcuts bypass campestanol, 6-deoxocathasterone, and 6-deoxoteasterone. Required for the regulation of polar elongation of leaf cells. Required for the longitudinal elongation of floral organs.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

3-epi-6-deoxocathasterone 23-monooxygenase CYP90D1; Involved in brassinosteroid (BR) biosynthesis. May convert teasterone to 3- dehydroteasterone, or 6-deoxoteasterone to 3-dehydro-6-deoxoteasterone. C-23 hydroxylase that converts directly (22S,24R)- 22-hydroxy-5-alpha-ergostan-3-one and 3-epi-6-deoxocathasterone to 3- dehydro-6-deoxoteasterone and 6-deoxotyphasterol, respectively. These C-23 hydroxylation shortcuts bypass campestanol, 6-deoxocathasterone, and 6-deoxoteasterone.

Shaggy-related protein kinase eta; 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. Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in v [...]

Steroid 5-alpha-reductase DET2; Involved in a reduction step in the biosynthesis of the plant steroid, brassinolide; acts at the second step in brassinolide biosynthesis in the 5alpha-reduction of (24R)- 24-methylcholest-4-en-3- one, which is further modified to form campestanol. Can use progesterone, testosterone, androstenedione and campestenone as substrate.