Plant Transcription Factor Database
Previous version: v3.0
Transcription Factor Information
Basic Information | Signature Domain | Sequence | 
Basic Information? help Back to Top
TF ID AT1G75390.1
Common NameAtbZIP44, bZIP44, F1B16.8
Taxonomic ID
Taxonomic Lineage
cellular organisms; Eukaryota; Viridiplantae; Streptophyta; Streptophytina; Embryophyta; Tracheophyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis
Family bZIP
Protein Properties Length: 173aa    MW: 19073.2 Da    PI: 6.9467
Description basic leucine-zipper 44
Gene Model
Gene Model ID Type Source Coding Sequence
AT1G75390.1genomeTAIRView CDS
Signature Domain? help Back to Top
Signature Domain
No. Domain Score E-value Start End HMM Start HMM End
       bZIP_1  5 krerrkqkNReAArrsRqRKkaeieeLeekvkeLeaeNkaL 45
                 ++ +rkq+NRe+ArrsR RK++ ++ L+  v  L +eN + 
                 5789**********************************865 PP

Protein Features ? help Back to Top
3D Structure
Database Entry ID E-value Start End InterPro ID Description
Gene3DG3DSA: hitNo description
SMARTSM003381.2E-1637101IPR004827Basic-leucine zipper domain
PROSITE profilePS5021710.62239102IPR004827Basic-leucine zipper domain
SuperFamilySSF579591.63E-114193No hitNo description
PfamPF001708.6E-104181IPR004827Basic-leucine zipper domain
CDDcd147022.31E-214292No hitNo description
PROSITE patternPS0003604459IPR004827Basic-leucine zipper domain
Gene Ontology ? help Back to Top
GO Term GO Category GO Description
GO:0006355Biological Processregulation of transcription, DNA-templated
GO:0009845Biological Processseed germination
GO:0005634Cellular Componentnucleus
GO:0003700Molecular Functiontranscription factor activity, sequence-specific DNA binding
GO:0043565Molecular Functionsequence-specific DNA binding
GO:0044212Molecular Functiontranscription regulatory region DNA binding
GO:0046982Molecular Functionprotein heterodimerization activity
Plant Ontology ? help Back to Top
PO Term PO Category PO Description
PO:0000293anatomyguard cell
PO:0007057developmental stageseed germination stage
Sequence ? help Back to Top
Protein Sequence    Length: 173 aa     Download sequence    Send to blast
Nucleic Localization Signal ? help Back to Top
No. Start End Sequence
Expression -- UniGene ? help Back to Top
UniGene ID E-value Expressed in
At.162520.0floral meristem| flower| leaf| root| seed| silique
Expression -- Microarray ? help Back to Top
Source ID E-value
Expression AtlasAT1G75390-
Expression -- Description ? help Back to Top
Source Description
UniprotTISSUE SPECIFICITY: Expressed in the micropylar endosperm and radicle tip in early germinating seeds. {ECO:0000269|PubMed:23461773}.
Functional Description ? help Back to Top
Source Description
UniProtTranscription factor that binds to the DNA G-box motif 5'-CACGTG-3' of MAN7 promoter. Involved in the positive regulation of seed germination through MAN7 gene activation. MAN7 is required for both, loosening of the micropylar endosperm, and rupture of the seed coat in germinating seeds. {ECO:0000269|PubMed:23461773}.
Function -- GeneRIF ? help Back to Top
  1. Data indicate that the expression of AtMAN7 gene (At5g66460) gene drastically reduced in the knock-out lines of AtbZIP44 (At1g75390).
    [PMID: 23461773]
Binding Motif ? help Back to Top
Motif ID Method Source Motif file
Motif logo
Cis-element ? help Back to Top
Regulation -- PlantRegMap ? help Back to Top
Source Upstream Regulator Target Gene
Interaction ? help Back to Top
Source Intact With
IntActSearch C0Z2L5
Phenotype -- Disruption Phenotype ? help Back to Top
Source Description
UniProtDISRUPTION PHENOTYPE: No visible phenotype under normal growth conditions, but seeds have decreased germination speed after imbibition, without affecting overall germination rate. {ECO:0000269|PubMed:23461773}.
Phenotype -- Mutation ? help Back to Top
Source ID
T-DNA ExpressAT1G75390
Annotation -- Nucleotide ? help Back to Top
Source Hit ID E-value Description
GenBankAC0237540.0AC023754.3 Arabidopsis thaliana chromosome I BAC F1B16 genomic sequence, complete sequence.
GenBankAK3188290.0AK318829.1 Arabidopsis thaliana AT1G75390 mRNA, complete cds, clone: RAFL14-51-H21.
GenBankAK3189910.0AK318991.1 Arabidopsis thaliana AT1G75390 mRNA, complete cds, clone: RAFL21-81-N15.
GenBankCP0026840.0CP002684.1 Arabidopsis thaliana chromosome 1 sequence.
Annotation -- Protein ? help Back to Top
Source Hit ID E-value Description
RefseqNP_177672.21e-127basic leucine-zipper 44
TrEMBLC0Z2L51e-127C0Z2L5_ARATH; AT1G75390 protein
STRINGAT1G75390.11e-126(Arabidopsis thaliana)
Orthologous Group ? help Back to Top
LineageOrthologous Group IDTaxa NumberGene Number
Representative plantOGRP5511678
Publications ? help Back to Top
  1. Riechmann JL, et al.
    Arabidopsis transcription factors: genome-wide comparative analysis among eukaryotes.
    Science, 2000. 290(5499): p. 2105-10
  2. Jakoby M, et al.
    bZIP transcription factors in Arabidopsis.
    Trends Plant Sci., 2002. 7(3): p. 106-11
  3. Boisson B,Giglione C,Meinnel T
    Unexpected protein families including cell defense components feature in the N-myristoylome of a higher eukaryote.
    J. Biol. Chem., 2003. 278(44): p. 43418-29
  4. Dal Bosco C, et al.
    Inactivation of the chloroplast ATP synthase gamma subunit results in high non-photochemical fluorescence quenching and altered nuclear gene expression in Arabidopsis thaliana.
    J. Biol. Chem., 2004. 279(2): p. 1060-9
  5. Yamada K, et al.
    Empirical analysis of transcriptional activity in the Arabidopsis genome.
    Science, 2003. 302(5646): p. 842-6
  6. Wiese A,Elzinga N,Wobbes B,Smeekens S
    A conserved upstream open reading frame mediates sucrose-induced repression of translation.
    Plant Cell, 2004. 16(7): p. 1717-29
  7. Deppmann CD, et al.
    Dimerization specificity of all 67 B-ZIP motifs in Arabidopsis thaliana: a comparison to Homo sapiens B-ZIP motifs.
    Nucleic Acids Res., 2004. 32(11): p. 3435-45
  8. Wang XJ,Cao XL,Hong Y
    Isolation and characterization of flower-specific transcripts in Acacia mangium.
    Tree Physiol., 2005. 25(2): p. 167-78
  9. Pischke MS,Huttlin EL,Hegeman AD,Sussman MR
    A transcriptome-based characterization of habituation in plant tissue culture.
    Plant Physiol., 2006. 140(4): p. 1255-78
  10. Ehlert A, et al.
    Two-hybrid protein-protein interaction analysis in Arabidopsis protoplasts: establishment of a heterodimerization map of group C and group S bZIP transcription factors.
    Plant J., 2006. 46(5): p. 890-900
  11. Deppmann CD,Alvania RS,Taparowsky EJ
    Cross-species annotation of basic leucine zipper factor interactions: Insight into the evolution of closed interaction networks.
    Mol. Biol. Evol., 2006. 23(8): p. 1480-92
  12. Hayden CA,Jorgensen RA
    Identification of novel conserved peptide uORF homology groups in Arabidopsis and rice reveals ancient eukaryotic origin of select groups and preferential association with transcription factor-encoding genes.
    BMC Biol., 2007. 5: p. 32
  13. Weltmeier F, et al.
    Expression patterns within the Arabidopsis C/S1 bZIP transcription factor network: availability of heterodimerization partners controls gene expression during stress response and development.
    Plant Mol. Biol., 2009. 69(1-2): p. 107-19
  14. Kang SG,Price J,Lin PC,Hong JC,Jang JC
    The arabidopsis bZIP1 transcription factor is involved in sugar signaling, protein networking, and DNA binding.
    Mol Plant, 2010. 3(2): p. 361-73
  15. Brady SM, et al.
    A stele-enriched gene regulatory network in the Arabidopsis root.
    Mol. Syst. Biol., 2011. 7: p. 459
  16. Iglesias-Fern
    Arabidopsis thaliana bZIP44: a transcription factor affecting seed germination and expression of the mannanase-encoding gene AtMAN7.
    Plant J., 2013. 74(5): p. 767-80