transcription factor bHLH93-like [Cucumis melo]
Protein Classification
basic helix-loop-helix domain-containing protein( domain architecture ID 10209619)
basic helix-loop-helix (bHLH) domain-containing protein is a DNA-binding protein that may act as a transcription factor; similar to Glycine max bHLH transcription factor PIB1
List of domain hits
| Name | Accession | Description | Interval | E-value | ||
| bHLH_SF super family | cl00081 | basic Helix Loop Helix (bHLH) domain superfamily; bHLH proteins are transcriptional regulators ... |
173-234 | 1.78e-26 | ||
basic Helix Loop Helix (bHLH) domain superfamily; bHLH proteins are transcriptional regulators that are found in organisms from yeast to humans. Members of the bHLH superfamily have two highly conserved and functionally distinct regions. The basic part is at the amino end of the bHLH that may bind DNA to a consensus hexanucleotide sequence known as the E box (CANNTG). Different families of bHLH proteins recognize different E-box consensus sequences. At the carboxyl-terminal end of the region is the HLH region that interacts with other proteins to form homo- and heterodimers. bHLH proteins function as a diverse set of regulatory factors because they recognize different DNA sequences and dimerize with different proteins. The bHLH proteins can be divided to cell-type specific and widely expressed proteins. The cell-type specific members of bHLH superfamily are involved in cell-fate determination and act in neurogenesis, cardiogenesis, myogenesis, and hematopoiesis. The actual alignment was detected with superfamily member cd11443: Pssm-ID: 469605 [Multi-domain] Cd Length: 72 Bit Score: 99.76 E-value: 1.78e-26
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| ACT_UUR-ACR-like | cd04873 | ACT domains of the bacterial signal-transducing uridylyltransferase /uridylyl-removing (UUR) ... |
265-329 | 4.11e-03 | ||
ACT domains of the bacterial signal-transducing uridylyltransferase /uridylyl-removing (UUR) enzyme, GlnD; This ACT domain family, ACT_UUR_ACR-like, includes the two C-terminal ACT domains of the bacterial signal-transducing uridylyltransferase /uridylyl-removing (UUR) enzyme, GlnD; including those enzymes similar to the GlnD found in enteric Escherichia coli and those found in photosynthetic, nitrogen-fixing bacterium Rhodospirillum rubrum. Also included in this CD are the four ACT domains of a novel protein composed almost entirely of ACT domain repeats (the ACR protein) and like proteins. These ACR proteins, found in Arabidopsis and Oryza, are proposed to function as novel regulatory or sensor proteins in plants. This CD also includes the first of the two ACT domains that comprise the Glycine Cleavage System Transcriptional Repressor (GcvR) protein and related domains, as well as, the N-terminal ACT domain of a yet characterized Arabidopsis/Oryza predicted tyrosine kinase. Members of this CD belong to the superfamily of ACT regulatory domains. : Pssm-ID: 153145 [Multi-domain] Cd Length: 70 Bit Score: 35.60 E-value: 4.11e-03
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| Name | Accession | Description | Interval | E-value | ||
| bHLH_AtAMS_like | cd11443 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein aborted microspores ... |
173-234 | 1.78e-26 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein aborted microspores (AMS) and similar proteins; The family includes several bHLH transcription factors from Arabidopsis thaliana, such as AMS, ICE1 and SCREAM2. AMS, also termed AtbHLH21, or EN 48, plays a crucial role in tapetum development and it is required for male fertility and pollen differentiation. ICE1, also termed inducer of CBF expression 1, or AtbHLH116, or EN 45, or SCREAM, acts as a transcriptional activator that regulates the cold-induced transcription of CBF/DREB1 genes. It binds specifically to the MYC recognition sites (5'-CANNTG-3') found in the CBF3/DREB1A promoter. SCREAM2, also termed AtbHLH33, or EN 44, mediates stomatal differentiation in the epidermis probably by controlling successive roles of SPCH, MUTE, and FAMA. Pssm-ID: 381449 [Multi-domain] Cd Length: 72 Bit Score: 99.76 E-value: 1.78e-26
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| HLH | smart00353 | helix loop helix domain; |
177-221 | 1.93e-04 | ||
helix loop helix domain; Pssm-ID: 197674 [Multi-domain] Cd Length: 53 Bit Score: 38.74 E-value: 1.93e-04
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| HLH | pfam00010 | Helix-loop-helix DNA-binding domain; |
185-219 | 1.18e-03 | ||
Helix-loop-helix DNA-binding domain; Pssm-ID: 459628 [Multi-domain] Cd Length: 53 Bit Score: 36.28 E-value: 1.18e-03
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| ACT_UUR-ACR-like | cd04873 | ACT domains of the bacterial signal-transducing uridylyltransferase /uridylyl-removing (UUR) ... |
265-329 | 4.11e-03 | ||
ACT domains of the bacterial signal-transducing uridylyltransferase /uridylyl-removing (UUR) enzyme, GlnD; This ACT domain family, ACT_UUR_ACR-like, includes the two C-terminal ACT domains of the bacterial signal-transducing uridylyltransferase /uridylyl-removing (UUR) enzyme, GlnD; including those enzymes similar to the GlnD found in enteric Escherichia coli and those found in photosynthetic, nitrogen-fixing bacterium Rhodospirillum rubrum. Also included in this CD are the four ACT domains of a novel protein composed almost entirely of ACT domain repeats (the ACR protein) and like proteins. These ACR proteins, found in Arabidopsis and Oryza, are proposed to function as novel regulatory or sensor proteins in plants. This CD also includes the first of the two ACT domains that comprise the Glycine Cleavage System Transcriptional Repressor (GcvR) protein and related domains, as well as, the N-terminal ACT domain of a yet characterized Arabidopsis/Oryza predicted tyrosine kinase. Members of this CD belong to the superfamily of ACT regulatory domains. Pssm-ID: 153145 [Multi-domain] Cd Length: 70 Bit Score: 35.60 E-value: 4.11e-03
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| Name | Accession | Description | Interval | E-value | ||
| bHLH_AtAMS_like | cd11443 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein aborted microspores ... |
173-234 | 1.78e-26 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein aborted microspores (AMS) and similar proteins; The family includes several bHLH transcription factors from Arabidopsis thaliana, such as AMS, ICE1 and SCREAM2. AMS, also termed AtbHLH21, or EN 48, plays a crucial role in tapetum development and it is required for male fertility and pollen differentiation. ICE1, also termed inducer of CBF expression 1, or AtbHLH116, or EN 45, or SCREAM, acts as a transcriptional activator that regulates the cold-induced transcription of CBF/DREB1 genes. It binds specifically to the MYC recognition sites (5'-CANNTG-3') found in the CBF3/DREB1A promoter. SCREAM2, also termed AtbHLH33, or EN 44, mediates stomatal differentiation in the epidermis probably by controlling successive roles of SPCH, MUTE, and FAMA. Pssm-ID: 381449 [Multi-domain] Cd Length: 72 Bit Score: 99.76 E-value: 1.78e-26
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| bHLH_AtFIT_like | cd11450 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana Fe-deficiency induced ... |
173-242 | 6.89e-14 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana Fe-deficiency induced transcription factor 1 (FIT) and similar proteins; The family includes bHLH transcription factors from Arabidopsis thaliana, such as FIT and DYT1. FIT, also termed FER-like iron deficiency-induced transcription factor, or FER-like regulator of iron uptake, or AtbHLH29, or EN 43, is a bHLH transcription factor that is required for the iron deficiency response in plant. It regulates FRO2 at the level of mRNA accumulation and IRT1 at the level of protein accumulation. DYT1, also termed AtbHLH22, or protein dysfunctional tapetum 1, or EN 49, is a bHLH transcription factor involved in the control of tapetum development. It is required for male fertility and pollen differentiation, especially during callose deposition. Pssm-ID: 381456 [Multi-domain] Cd Length: 76 Bit Score: 66.01 E-value: 6.89e-14
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| bHLH_AtAIB_like | cd11449 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein ABA-INDUCIBLE ... |
178-241 | 2.38e-13 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein ABA-INDUCIBLE bHLH-TYPE (AIB) and similar proteins; The family includes several bHLH transcription factors from Arabidopsis thaliana, such as AIB and MYC proteins (MYC2, MYC3 and MYC4). AIB, also termed AtbHLH17, or EN 35, is a transcription activator that regulates positively abscisic acid (ABA) response. MYC2, also termed protein jasmonate insensitive 1, or R-homologous Arabidopsis protein 1 (RAP-1), or AtbHLH6, or EN 38, or Z-box binding factor 1 protein, is a transcriptional activator involved in abscisic acid (ABA), jasmonic acid (JA), and light signaling pathways. MYC3, also termed protein altered tryptophan regulation 2, or AtbHLH5, or transcription factor ATR2, or EN 36, is a transcription factor involved in tryptophan, jasmonic acid (JA) and other stress-responsive gene regulation. MYC4, also termed AtbHLH4, or EN 37, is a transcription factor involved in jasmonic acid (JA) gene regulation. MYC2, together with MYC3 and MYC4, controls additively subsets of JA-dependent responses. Pssm-ID: 381455 [Multi-domain] Cd Length: 78 Bit Score: 64.72 E-value: 2.38e-13
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| bHLH_AtTT8_like | cd11451 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein transparent testa 8 ... |
177-228 | 2.36e-11 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein transparent testa 8 (TT8) and similar proteins; The family includes several bHLH transcription factors from Arabidopsis thaliana, such as TT8, EGL1, and GL3. TT8, also termed AtbHLH42, or EN 32, is involved in the control of flavonoid pigmentation and plays a key role in regulating leucoanthocyanidin reductase (BANYULS) and dihydroflavonol-4-reductase (DFR). EGL1, also termed AtbHLH2, or EN 30, or AtMYC146, or protein enhancer of GLABRA 3, is involved in epidermal cell fate specification and regulates negatively stomata formation but promotes trichome formation. GL3, also termed AtbHLH1, or AtMYC6, or protein shapeshifter, or EN 31, is involved in epidermal cell fate specification. It regulates negatively stomata formation, but, in association with TTG1 and MYB0/GL1, promotes trichome formation, branching and endoreplication. Pssm-ID: 381457 Cd Length: 75 Bit Score: 58.97 E-value: 2.36e-11
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| bHLH_AtMYC1_like | cd18918 | basic Helix-Loop-Helix (bHLH) domain found in Arabidopsis thaliana MYC1 and similar proteins; ... |
186-231 | 1.45e-10 | ||
basic Helix-Loop-Helix (bHLH) domain found in Arabidopsis thaliana MYC1 and similar proteins; MYC1, also termed AtbHLH12, or EN 58, acts as a transcription activator, when associated with MYB75/PAP1 or MYB90/PAP2. Pssm-ID: 381488 [Multi-domain] Cd Length: 70 Bit Score: 56.57 E-value: 1.45e-10
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| bHLH_AtbHLH_like | cd11393 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana genes coding transcription ... |
175-227 | 3.57e-10 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana genes coding transcription factors and similar proteins; bHLH proteins are the second largest class of plant transcription factors that regulate transcription of genes that are involve in many essential physiological and developmental process. bHLH proteins are transcriptional regulators that are found in organisms from yeast to humans. The Arabidopsis bHLH proteins that have been characterized so far have roles in regulation of fruit dehiscence, cell development (carpel, anther and epidermal), phytochrome signaling, flavonoid biosynthesis, hormone signaling and stress responses. Pssm-ID: 381399 [Multi-domain] Cd Length: 53 Bit Score: 54.88 E-value: 3.57e-10
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| bHLH_AtNAI1_like | cd11452 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein NAI1 and similar ... |
176-244 | 3.83e-09 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein NAI1 and similar proteins; NAI1, also termed AtbHLH20, or EN 27, is a bHLH transcription activator that regulates the expression of at least NAI2, PYK10 and PBP1. It is required for and mediates the formation of endoplasmic reticulum bodies (ER bodies). It plays a role in the symbiotic interactions with the endophytes of the Sebacinaceae fungus family, such as Piriformospora indica and Sebacina. Pssm-ID: 381458 [Multi-domain] Cd Length: 75 Bit Score: 52.85 E-value: 3.83e-09
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| bHLH_AtAIG1_like | cd11455 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein AIG1 and similar ... |
178-219 | 1.19e-05 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein AIG1 and similar proteins; AIG1, also termed AtbHLH32, or EN 54, or protein target of MOOPTEROS 5, is a transcription factor required for MONOPTEROS-dependent root initiation in embryo. Pssm-ID: 381461 Cd Length: 80 Bit Score: 43.05 E-value: 1.19e-05
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| bHLH_AtBIM_like | cd11453 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana BES1-interacting Myc-like ... |
173-232 | 2.44e-05 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana BES1-interacting Myc-like proteins (BIMs) and similar proteins; The family includes Arabidopsis thaliana BIM1 and its homologs (BIM2 and BIM3), which are bHLH transcription factors that interact with BES1 to regulate transcription of Brassinosteroid (BR)-induced gene. BR regulates many growth and developmental processes such as cell elongation, vascular development, senescence stress responses, and photomorphogenesis. BIM1 heterodimerize with BES1 and bind to E-box sequences present in many BR-induced promoters to regulated BR-induced genes. Pssm-ID: 381459 Cd Length: 77 Bit Score: 42.07 E-value: 2.44e-05
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| HLH | smart00353 | helix loop helix domain; |
177-221 | 1.93e-04 | ||
helix loop helix domain; Pssm-ID: 197674 [Multi-domain] Cd Length: 53 Bit Score: 38.74 E-value: 1.93e-04
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| bHLH_SF | cd00083 | basic Helix Loop Helix (bHLH) domain superfamily; bHLH proteins are transcriptional regulators ... |
185-219 | 2.10e-04 | ||
basic Helix Loop Helix (bHLH) domain superfamily; bHLH proteins are transcriptional regulators that are found in organisms from yeast to humans. Members of the bHLH superfamily have two highly conserved and functionally distinct regions. The basic part is at the amino end of the bHLH that may bind DNA to a consensus hexanucleotide sequence known as the E box (CANNTG). Different families of bHLH proteins recognize different E-box consensus sequences. At the carboxyl-terminal end of the region is the HLH region that interacts with other proteins to form homo- and heterodimers. bHLH proteins function as a diverse set of regulatory factors because they recognize different DNA sequences and dimerize with different proteins. The bHLH proteins can be divided to cell-type specific and widely expressed proteins. The cell-type specific members of bHLH superfamily are involved in cell-fate determination and act in neurogenesis, cardiogenesis, myogenesis, and hematopoiesis. Pssm-ID: 381392 [Multi-domain] Cd Length: 46 Bit Score: 38.27 E-value: 2.10e-04
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| bHLH_AtIND_like | cd11454 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein INDEHISCENT (IND) ... |
186-229 | 2.45e-04 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein INDEHISCENT (IND) and similar proteins; The family includes several bHLH transcription factors from Arabidopsis thaliana, such as IND, HEC proteins (HEC1, HEC2 and HEC3) and UNE12. IND, also termed AtbHLH40, or EN 120, is a bHLH transcription regulator required for seed dispersal. It is involved in the differentiation of all three cell types required for fruit dehiscence. HEC1 (also termed AtbHLH88, or protein HECATE 1, or EN 118), HEC2 (also termed AtbHLH37, or protein HECATE 2, or EN 117) and HEC3 (also termed AtbHLH43, or protein HECATE 3, or EN 119) are required for the female reproductive tract development and fertility. Both IND and HEC proteins have been implicated in regulation of auxin signaling. They heterodimerize with SPATULA (SPT) bHLH transcription factor to regulate reproductive tract development in plant. UNE12, also termed AtbHLH59, or protein UNFERTILIZED EMBRYO SAC 12, or EN 93, is required for ovule fertilization. Pssm-ID: 381460 Cd Length: 63 Bit Score: 38.91 E-value: 2.45e-04
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| HLH | pfam00010 | Helix-loop-helix DNA-binding domain; |
185-219 | 1.18e-03 | ||
Helix-loop-helix DNA-binding domain; Pssm-ID: 459628 [Multi-domain] Cd Length: 53 Bit Score: 36.28 E-value: 1.18e-03
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| bHLH_AtPIF_like | cd11445 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana phytochrome interacting ... |
186-238 | 1.87e-03 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana phytochrome interacting factors (PIFs) and similar proteins; The family includes several bHLH transcription factors from Arabidopsis thaliana, such as PIFs, ALC, PIL1, SPATULA, and UNE10. PIFs (PIF1, PIF3, PIF4, PIF5, PIF6 and PIF7) have been shown to control light-regulated gene expression. They directly bind to the photoactivated phytochromes and are degraded in response to light signals. ALC, also termed AtbHLH73, or protein ALCATRAZ, or EN 98, is required for the dehiscence of fruit, especially for the separation of the valve cells from the replum. It promotes the differentiation of a strip of labile non-lignified cells sandwiched between layers of lignified cells. PIL1, also termed AtbHLH124, or protein phytochrome interacting factor 3-like 1, or EN 110, is involved in responses to transient and long-term shade. It is required for the light-mediated inhibition of hypocotyl elongation and necessary for rapid light-induced expression of the photomorphogenesis- and circadian-related gene APRR9. PIL1 seems to play a role in multiple PHYB responses, such as flowering transition and petiole elongation. SPATULA, also termed AtbHLH24, or EN 99, plays a role in floral organogenesis. It promotes the growth of carpel margins and of pollen tract tissues derived from them. UNE10, also termed AtbHLH16, or protein UNFERTILIZED EMBRYO SAC 10, or EN 99, is required during the fertilization of ovules by pollen. Pssm-ID: 381451 Cd Length: 64 Bit Score: 36.20 E-value: 1.87e-03
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| bHLHzip_SREBP | cd11394 | basic Helix-Loop-Helix-zipper (bHLHzip) domain found in sterol regulatory element-binding ... |
187-231 | 3.89e-03 | ||
basic Helix-Loop-Helix-zipper (bHLHzip) domain found in sterol regulatory element-binding protein (SREBP) family; The SREBP family includes SREBP1 and SREBP2, which are bHLHzip transcriptional activator of genes encoding proteins essential for cholesterol biosynthesis/uptake and fatty acid biosynthesis. SREBP1 and SREBP2 are principally found in the liver and in adipocytes and made up of an N-terminal transcription factor portion (composed of an activation domain, a bHLHzip domain, and a nuclear localization signal), a hydrophobic region containing two membrane spanning regions, and a C-terminal regulatory segment. They recognize a symmetric sterol regulatory element (TCACNCCAC) instead of E-box. Pssm-ID: 381400 [Multi-domain] Cd Length: 73 Bit Score: 35.71 E-value: 3.89e-03
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| ACT_UUR-ACR-like | cd04873 | ACT domains of the bacterial signal-transducing uridylyltransferase /uridylyl-removing (UUR) ... |
265-329 | 4.11e-03 | ||
ACT domains of the bacterial signal-transducing uridylyltransferase /uridylyl-removing (UUR) enzyme, GlnD; This ACT domain family, ACT_UUR_ACR-like, includes the two C-terminal ACT domains of the bacterial signal-transducing uridylyltransferase /uridylyl-removing (UUR) enzyme, GlnD; including those enzymes similar to the GlnD found in enteric Escherichia coli and those found in photosynthetic, nitrogen-fixing bacterium Rhodospirillum rubrum. Also included in this CD are the four ACT domains of a novel protein composed almost entirely of ACT domain repeats (the ACR protein) and like proteins. These ACR proteins, found in Arabidopsis and Oryza, are proposed to function as novel regulatory or sensor proteins in plants. This CD also includes the first of the two ACT domains that comprise the Glycine Cleavage System Transcriptional Repressor (GcvR) protein and related domains, as well as, the N-terminal ACT domain of a yet characterized Arabidopsis/Oryza predicted tyrosine kinase. Members of this CD belong to the superfamily of ACT regulatory domains. Pssm-ID: 153145 [Multi-domain] Cd Length: 70 Bit Score: 35.60 E-value: 4.11e-03
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| ASKHA_NBD_HSP70_HSPA1-like | cd24028 | nucleotide-binding domain (NBD) of the 70-kDa heat shock protein 1 (HSPA1)-like family; The ... |
249-308 | 4.99e-03 | ||
nucleotide-binding domain (NBD) of the 70-kDa heat shock protein 1 (HSPA1)-like family; The HSPA1-like family includes human HSPA1A (70-kDa heat shock protein 1A, also known as HSP72; HSPA1; HSP70I; HSPA1B; HSP70-1; HSP70-1A), HSPA1B (70-kDa heat shock protein 1B, also known as HSPA1A; HSP70-2; HSP70-1B), and HSPA1L (70-kDa heat shock protein 1-like, also known as HSP70T; hum70t; HSP70-1L; HSP70-HOM), HSPA2 (70-kDa heat shock protein 2, also known as HSP70-2; HSP70-3), BiP (also known as HSP70 family protein 5 /HSPA5; 70-kDa heat shock protein 5; glucose-regulated protein 78/GRP78; immunoglobulin heavy chain-binding protein), HSPA6 (also known as heat shock 70kDa protein 6; HSP70B'), HSPA7 (heat shock 70kDa protein 7 , also known as HSP70B), HSPA8 (heat shock 70kDa protein 8, also known as Lipopolysaccharide-associated protein 1/LAP1; HSC70; HSP73; HSPA10), HSPA13 (also known as 70-kDa heat shock protein 13; STCH; microsomal stress-70 protein ATPase core; stress-70 protein chaperone microsome-associated 60 kDa protein), as well as Saccharmoyces cerevisiae Hsp70 chaperone Ssb1-2 and heat shock protein Ssa1-4. HSPA1A/1B, HSPA1L, HSPA2 and HSPA6-8 are molecular chaperones implicated in a wide variety of cellular processes, including protection of the proteome from stress, folding and transport of newly synthesized polypeptides, activation of proteolysis of misfolded proteins and the formation and dissociation of protein complexes. They play pivotal roles in the protein quality control system, ensuring the correct folding of proteins, the re-folding of misfolded proteins and controlling the targeting of proteins for subsequent degradation. BiP plays a key role in protein folding and quality control in the endoplasmic reticulum lumen. It plays an auxiliary role in post-translational transport of small presecretory proteins across endoplasmic reticulum (ER). HSPA13 has peptide-independent ATPase activity. All family members belong to the heat shock protein 70 (HSP70) family of chaperones that assist in protein folding and assembly and can direct incompetent "client" proteins towards degradation. Typically, HSP70s have a nucleotide-binding domain (NBD) and a substrate-binding domain (SBD). The nucleotide sits in a deep cleft formed between the two lobes of the NBD. The two subdomains of each lobe change conformation between ATP-bound, ADP-bound, and nucleotide-free states. ATP binding opens up the substrate-binding site; substrate-binding increases the rate of ATP hydrolysis. HSP70 chaperone activity is regulated by various co-chaperones: J-domain proteins and nucleotide exchange factors (NEFs). Pssm-ID: 466878 [Multi-domain] Cd Length: 376 Bit Score: 38.26 E-value: 4.99e-03
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| bHLH_AtFAMA_like | cd11448 | basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein FAMA and similar ... |
185-229 | 5.94e-03 | ||
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein FAMA and similar proteins; The family includes several bHLH transcription factors from Arabidopsis thaliana, such as FAMA, MUTE and SPEECHLESS, which work together to regulate the sequential cell fate specification during stomatal development and differentiation. FAMA, also termed AtbHLH97, or EN 14, is a transcription activator required to promote differentiation and morphogenesis of stomatal guard cells and to halt proliferative divisions in their immediate precursors. It mediates the formation of stomata. MUTE, also termed AtbHLH45, or EN 20, is required for the differentiation of stomatal guard cells, by promoting successive asymmetric cell divisions and the formation of guard mother cells. It promotes the conversion of the leaf epidermis into stomata. SPEECHLESS, also termed AtbHLH98, or EN 19, is required for the initiation and the formation of stomata, by promoting the first asymmetric cell divisions. FAMA, MUTE and SPEECHLESS form heterodimers with SCREAM/ICE1 and SCRM2 to regulate transcription of genes during stomatal development. Pssm-ID: 381454 Cd Length: 74 Bit Score: 35.02 E-value: 5.94e-03
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