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BRI1 BRI1 IAA19 IAA19 GATA2 GATA2 CYP90B1 CYP90B1 PIF3 PIF3 PHYB PHYB BBX20 BBX20 ACS5 ACS5 DET2 DET2 SAUR15 SAUR15 PIF5 PIF5 PRE6 PRE6 PIF1 PIF1 PIL1 PIL1 BZR1 BZR1 PIF4 PIF4 CYP85A2 CYP85A2 ADS3 ADS3 HFR1 HFR1 GLK2 GLK2 PRE1 PRE1 PRE5 PRE5 BZR2 BZR2 BHLH150 BHLH150 F-ATMBP F-ATMBP GLK1 GLK1 PAR1 PAR1 IBH1 IBH1
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second shell of interactors
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proteins of unknown 3D structure
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BRI1Protein 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 [...] (1196 aa)
IAA19Auxin-responsive protein IAA19; Aux/IAA proteins are short-lived transcriptional factors that function as repressors of early auxin response genes at low auxin concentrations. Repression is thought to result from the interaction with auxin response factors (ARFs), proteins that bind to the auxin- responsive promoter element (AuxRE). Formation of heterodimers with ARF proteins may alter their ability to modulate early auxin response genes expression. (197 aa)
GATA2GATA transcription factor 2; Transcriptional activator that specifically binds 5'-GATA-3' or 5'-GAT-3' motifs within gene promoters. May be involved in the regulation of some light-responsive genes. (264 aa)
CYP90B1Cytochrome P450 90B1; Catalyzes the C22-alpha-hydroxylation step in brassinosteroids biosynthesis. Converts campestanol to 6- deoxocathasterone and 6-oxocampestanol to cathasterone. (513 aa)
PIF3Transcription factor PIF3; Transcription factor acting positively in the phytochrome signaling pathway. Activates transcription by binding to the G box (5'- CACGTG-3'). (524 aa)
PHYBPhytochrome B; Regulatory photoreceptor which exists in two forms that are reversibly interconvertible by light: the Pr form that absorbs maximally in the red region of the spectrum and the Pfr form that absorbs maximally in the far-red region. Photoconversion of Pr to Pfr induces an array of morphogenetic responses, whereas reconversion of Pfr to Pr cancels the induction of those responses. Pfr controls the expression of a number of nuclear genes including those encoding the small subunit of ribulose-bisphosphate carboxylase, chlorophyll A/B binding protein, protochlorophyllide reduct [...] (1172 aa)
BBX20B-box zinc finger protein 20; Acts as positive regulator of seedling photomorphogenesis. Plays a negative role in brassinosteroid responses. (242 aa)
ACS51-aminocyclopropane-1-carboxylate synthase 5; 1-aminocyclopropane-1-carboxylate synthase (ACS) enzymes catalyze the conversion of S-adenosyl-L-methionine (SAM) into 1- aminocyclopropane-1-carboxylate (ACC), a direct precursor of ethylene. (470 aa)
DET2Steroid 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. (262 aa)
SAUR15Auxin-responsive protein SAUR15; Functions as a positive effector of cell expansion through modulation of auxin transport. (89 aa)
PIF5Transcription factor PIF5; Transcription factor acting negatively in the phytochrome B signaling pathway to promote the shade-avoidance response. Regulates PHYB abundance at the post-transcriptional level, possibly via the ubiquitin-proteasome pathway. Promotes ethylene activity in the dark. May regulate the expression of a subset of genes by binding to the G- box motif. Might be involved in the integration of light-signals to control both circadian and photomorphogenic processes. Activated by CRY1 and CRY2 in response to low blue light (LBL) by direct binding at chromatin on E-box var [...] (444 aa)
PRE6Transcription factor PRE6; Atypical and probable non DNA-binding bHLH transcription factor that regulates light-mediated responses in day light conditions by binding and inhibiting the activity of the bHLH transcription factor HFR1, a critical regulator of light signaling and shade avoidance. Forms non-functional heterodimers with HFR1, causing liberation and activation of PIF4 from the transcriptionally inactive HFR1-PIF4 complex. (94 aa)
PIF1Transcription factor PIF1; Transcription activator. Regulates negatively chlorophyll biosynthesis and seed germination in the dark, and lightinduced degradation of PIF1 relieves this negative regulation to promote photomorphogenesis. Binds to the G-box motif (5'-CACGTG-3') found in many light-regulated promoters. Promotes the expression of SOM, and thus modulates responses to abscisic acid (ABA) and gibberellic acid (GA). (478 aa)
PIL1Transcription factor PIL1; Transcription factor. Involved in responses to transient and long-term shade. Required for the light-mediated inhibition of hypocotyl elongation. Necessary for rapid light-induced expression of the photomorphogenesis- and circadian-related gene APRR9. Seems to play a role in multiple PHYB responses, such as flowering transition and petiole elongation. (416 aa)
BZR1Protein 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). (336 aa)
PIF4Transcription factor PIF4; Transcription factor acting negatively in the phytochrome B signaling pathway. May regulate the expression of a subset of genes involved in cell expansion by binding to the G-box motif (By similarity). Activated by CRY1 and CRY2 in response to low blue light (LBL) by direct binding at chromatin on E-box variant 5'-CA[CT]GTG-3' to stimulate specific gene expression to adapt global physiology (e.g. hypocotyl elongation in low blue light). Belongs to the bHLH protein family. (430 aa)
CYP85A2Cytochrome 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. (465 aa)
ADS3Palmitoyl-monogalactosyldiacylglycerol delta-7 desaturase, chloroplastic; Fatty acid desaturase involved in the first desaturation step leading to the formation of hexadeca 7,10,13-trienoic acid (16:3(7Z,10Z,13Z)), the major functional components of thylakoid membranes. Required for chloroplast biogenesis at low temperature. Also indirectly involved in the production of the oxylipin dinor-oxo-phyto- dienoic acid implicated in wound signaling. (371 aa)
HFR1Transcription factor HFR1; Atypical bHLH transcription factor that regulates photomorphogenesis through modulation of phytochrome (e.g. PHYA) and cryptochrome signalings (Ref.4,. Suppresses the transcriptional regulation activity of PIF4 by forming non-DNA-binding heterodimer. (292 aa)
GLK2Transcription activator GLK2; Transcriptional activator that functions with GLK1 to promote chloroplast development. Acts as an activator of nuclear photosynthetic genes involved in chlorophyll biosynthesis, light harvesting, and electron transport. Acts in a cell-autonomous manner to coordinate and maintain the photosynthetic apparatus within individual cells. May function in photosynthetic capacity optimization by integrating responses to variable environmental and endogenous cues. Prevents premature senescence. (386 aa)
PRE1Transcription factor PRE1; Atypical and probable non DNA-binding bHLH transcription factor that integrates multiple signaling pathways to regulate cell elongation and plant development. Binds IBH1, forming a pair of antagonistic bHLH transcription factors that function downstream of BZR1 to mediate brassinosteroid regulation of cell elongation. Regulates light responses by binding and inhibiting the activity of the bHLH transcription factor HFR1, a critical regulator of light signaling and shade avoidance. May have a regulatory role in various aspects of gibberellin-dependent growth an [...] (92 aa)
PRE5Transcription factor PRE5; Atypical and probable non DNA-binding bHLH transcription factor that integrates multiple signaling pathways to regulate cell elongation and plant development. May have a regulatory role in various aspects of gibberellin-dependent growth and development. (92 aa)
BZR2Protein 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 [...] (335 aa)
BHLH150Transcription factor bHLH150; Atypical bHLH transcription factor probably unable to bind DNA. Negatively regulates brassinosteroid signaling. (211 aa)
F-ATMBPMyrosinase-binding protein 2; Belongs to the jacalin lectin family. (642 aa)
GLK1Transcription activator GLK1; Transcriptional activator that functions with GLK2 to promote chloroplast development. Acts as an activator of nuclear photosynthetic genes involved in chlorophyll biosynthesis, light harvesting, and electron transport. Acts in a cell-autonomous manner to coordinate and maintain the photosynthetic apparatus within individual cells. May function in photosynthetic capacity optimization by integrating responses to variable environmental and endogenous cues. Prevents premature senescence. (420 aa)
PAR1Transcription factor PAR1; Atypical bHLH transcription factor that acts as negative regulator of a variety of shade avoidance syndrome (SAS) responses, including seedling elongation and photosynthetic pigment accumulation. Acts as direct transcriptional repressor of two auxin-responsive genes, SAUR15 and SAUR68. May function in integrating shade and hormone transcriptional networks in response to light and auxin changes. (118 aa)
IBH1Transcription factor IBH1; Atypical and probable non DNA-binding bHLH transcription factor that acts as transcriptional repressor that negatively regulates cell and organ elongation in response to gibberellin (GA) and brassinosteroid (BR) signaling. Is able to form heterodimer with BHLH49, thus inhibiting DNA binding of BHLH49, which is a transcriptional activator that regulates the expression of a subset of genes involved in cell expansion by binding to the G-box motif. Binds and inhibits HBI1, a positive regulator of cell elongation that directly binds to the promoters and activated [...] (156 aa)
Your Current Organism:
Arabidopsis thaliana
NCBI taxonomy Id: 3702
Other names: A. thaliana, Arabidopsis thaliana (L.) Heynh., mouse-ear cress, thale cress, thale-cress
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