NCBI Home Page NCBI Site Search page NCBI Guide that lists and describes the NCBI resources
Conserved domains on  [gi|1063720076|ref|NP_001320062|]
View 

basic helix-loop-helix (bHLH) DNA-binding superfamily protein [Arabidopsis thaliana]

Protein Classification

basic helix-loop-helix domain-containing protein( domain architecture ID 14441649)

basic helix-loop-helix (bHLH) domain-containing protein is a DNA-binding protein that may act as a transcription factor

Graphical summary

 Zoom to residue level

show extra options »

Show site features     Horizontal zoom: ×

List of domain hits

Name Accession Description Interval E-value
bHLH_AtORG2_like cd18914
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana OBP3-responsive gene 2 ...
47-119 1.11e-33

basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana OBP3-responsive gene 2 (ORG2), 3 (ORG3) and similar proteins; The family includes ORG2 (also termed AtbHLH38, or EN 8) and ORG3 (also termed AtbHLH39, or EN 9), both of which act as bHLH transcription factors.


:

Pssm-ID: 381484 [Multi-domain]  Cd Length: 77  Bit Score: 115.48  E-value: 1.11e-33
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1063720076  47 HRDIERQRRQEMATLFATLRTHLPLKYIKGKRAVSDHVNGAVNFIKDTEARIKELSARRDELSRETGQGYKSN 119
Cdd:cd18914     5 HNDVERQRRQEMASLFSSLRSLLPLQYIKGKLSVSDHVDEAVNYIKELQEKIKELSEKRDELLKLISGVRSEE 77
 
Name Accession Description Interval E-value
bHLH_AtORG2_like cd18914
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana OBP3-responsive gene 2 ...
47-119 1.11e-33

basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana OBP3-responsive gene 2 (ORG2), 3 (ORG3) and similar proteins; The family includes ORG2 (also termed AtbHLH38, or EN 8) and ORG3 (also termed AtbHLH39, or EN 9), both of which act as bHLH transcription factors.


Pssm-ID: 381484 [Multi-domain]  Cd Length: 77  Bit Score: 115.48  E-value: 1.11e-33
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1063720076  47 HRDIERQRRQEMATLFATLRTHLPLKYIKGKRAVSDHVNGAVNFIKDTEARIKELSARRDELSRETGQGYKSN 119
Cdd:cd18914     5 HNDVERQRRQEMASLFSSLRSLLPLQYIKGKLSVSDHVDEAVNYIKELQEKIKELSEKRDELLKLISGVRSEE 77
HLH pfam00010
Helix-loop-helix DNA-binding domain;
47-93 3.45e-07

Helix-loop-helix DNA-binding domain;


Pssm-ID: 459628 [Multi-domain]  Cd Length: 53  Bit Score: 45.53  E-value: 3.45e-07
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*..
gi 1063720076  47 HRDIERQRRQEMATLFATLRTHLPLKYIKGKRAVSDHVNGAVNFIKD 93
Cdd:pfam00010   5 HNERERRRRDRINDAFDELRELLPTLPPDKKLSKAEILRLAIEYIKH 51
 
Name Accession Description Interval E-value
bHLH_AtORG2_like cd18914
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana OBP3-responsive gene 2 ...
47-119 1.11e-33

basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana OBP3-responsive gene 2 (ORG2), 3 (ORG3) and similar proteins; The family includes ORG2 (also termed AtbHLH38, or EN 8) and ORG3 (also termed AtbHLH39, or EN 9), both of which act as bHLH transcription factors.


Pssm-ID: 381484 [Multi-domain]  Cd Length: 77  Bit Score: 115.48  E-value: 1.11e-33
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1063720076  47 HRDIERQRRQEMATLFATLRTHLPLKYIKGKRAVSDHVNGAVNFIKDTEARIKELSARRDELSRETGQGYKSN 119
Cdd:cd18914     5 HNDVERQRRQEMASLFSSLRSLLPLQYIKGKLSVSDHVDEAVNYIKELQEKIKELSEKRDELLKLISGVRSEE 77
HLH pfam00010
Helix-loop-helix DNA-binding domain;
47-93 3.45e-07

Helix-loop-helix DNA-binding domain;


Pssm-ID: 459628 [Multi-domain]  Cd Length: 53  Bit Score: 45.53  E-value: 3.45e-07
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*..
gi 1063720076  47 HRDIERQRRQEMATLFATLRTHLPLKYIKGKRAVSDHVNGAVNFIKD 93
Cdd:pfam00010   5 HNERERRRRDRINDAFDELRELLPTLPPDKKLSKAEILRLAIEYIKH 51
bHLH_AtFAMA_like cd11448
basic helix-loop-helix (bHLH) domain found in Arabidopsis thaliana protein FAMA and similar ...
47-110 6.15e-05

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: 40.02  E-value: 6.15e-05
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1063720076  47 HRDIERQRRQEMATLFATLRTHLPLKYI-KGKRAvsDHVNGAVNFIKDTEARIKELSA--RRDELSR 110
Cdd:cd11448     3 HIAVERNRRKQMNEHLNVLRSLMPGSYIqRGDQA--SIVGGAIEFVKELEQLLQSLEAqkRRRTLNE 67
bHLHzip_MGA_like cd19682
basic Helix-Loop-Helix-zipper (bHLHzip) domain found in MAX gene-associated protein (MGA) ...
47-108 2.20e-04

basic Helix-Loop-Helix-zipper (bHLHzip) domain found in MAX gene-associated protein (MGA) family; The MGA family includes MGA, Schizosaccharomyces pombe ESC1 (spESC1) and similar proteins. MGA, also termed MAX dimerization protein 5 (MAD5), is a dual specificity T-box/ bHLHzip transcription factor that regulates the expression of both Max-network and T-box family target genes. It contains a Myc-like bHLHZip motif and requires heterodimerization with Max for binding to the preferred Myc-Max-binding site CACGTG. In addition to the bHLHZip domain, MGA harbors a second DNA-binding domain, the T-box or T-domain. It thus binds the preferred Brachyury-binding sequence and represses transcription of reporter genes containing promoter-proximal Brachyury-binding sites. spESC1 is a bHLHzip protein with homology to human MyoD and Myf-5 myogenic differentiation inducers. It is involved in the sexual differentiation process.


Pssm-ID: 381525 [Multi-domain]  Cd Length: 65  Bit Score: 38.41  E-value: 2.20e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1063720076  47 HRDIERQRRQEMATLFATLRTHLPLkYIKGKRAVSDHVNGAVNFIKDTEARIKELSARRDEL 108
Cdd:cd19682     4 HKKRERERRSELRELFDKLKQLLGL-DSDEKASKLAVLTEAIEEIQQLKREEDELQKEKARL 64
bHLH_SF cd00083
basic Helix Loop Helix (bHLH) domain superfamily; bHLH proteins are transcriptional regulators ...
51-93 3.32e-03

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: 34.42  E-value: 3.32e-03
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*
gi 1063720076  51 ERQRRQEMATLFATLRTHLPlkYIKGKRAVSDH--VNGAVNFIKD 93
Cdd:cd00083     1 ERRRRDKINDAFEELKRLLP--ELPDSKKLSKAsiLQKAVEYIRE 43
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
Help | Disclaimer | Write to the Help Desk
NCBI | NLM | NIH