PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v3.0
Transcription Factor Information
Basic Information | Signature Domain | Sequence | 
Basic Information? help Back to Top
TF ID AT1G02065.1
Common NameSPL8, T7I23.32
Organism
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 SBP
Protein Properties Length: 333aa    MW: 36827.1 Da    PI: 8.8865
Description squamosa promoter binding protein-like 8
Gene Model
Gene Model ID Type Source Coding Sequence
AT1G02065.1genomeTAIRView CDS
Signature Domain? help Back to Top
Signature Domain
No. Domain Score E-value Start End HMM Start HMM End
1SBP1277.5e-40187264178
                  --SSTT-----TT--HHHHHTT--HHHHT-S-EEETTEEEEE-TTTSSEEETTT--SS--S-STTTT-------S--- CS
          SBP   1 lCqvegCeadlseakeyhrrhkvCevhskapvvlvsgleqrfCqqCsrfhelsefDeekrsCrrrLakhnerrrkkqa 78 
                  +Cq+egC+adls+ak+yhrrhkvCe+hska++v+++gl+qrfCqqCsrfh lsefD++krsCr+rLa+hn+rrrk ++
  AT1G02065.1 187 RCQAEGCNADLSHAKHYHRRHKVCEFHSKASTVVAAGLSQRFCQQCSRFHLLSEFDNGKRSCRKRLADHNRRRRKCHQ 264
                  6*************************************************************************9865 PP

Protein Features ? help Back to Top
3D Structure
Database Entry ID E-value Start End InterPro ID Description
Gene3DG3DSA:4.10.1100.107.1E-35183249IPR004333Transcription factor, SBP-box
PROSITE profilePS5114132.223185262IPR004333Transcription factor, SBP-box
SuperFamilySSF1036121.47E-37186265IPR004333Transcription factor, SBP-box
PfamPF031104.5E-30188261IPR004333Transcription factor, SBP-box
Gene Ontology ? help Back to Top
GO Term GO Category GO Description
GO:0006355Biological Processregulation of transcription, DNA-templated
GO:0009554Biological Processmegasporogenesis
GO:0009556Biological Processmicrosporogenesis
GO:0030154Biological Processcell differentiation
GO:0048653Biological Processanther development
GO:0005634Cellular Componentnucleus
GO:0005737Cellular Componentcytoplasm
GO:0003677Molecular FunctionDNA binding
GO:0046872Molecular Functionmetal ion binding
Plant Ontology ? help Back to Top
PO Term PO Category PO Description
PO:0009046anatomyflower
Sequence ? help Back to Top
Protein Sequence    Length: 333 aa     Download sequence    Send to blast
MLDYEWDNPS SIVLSGDERN PDSDPTRSSF SFFDPISHYN NDHRHITISP PLLSSFSNQQ  60
QQHHLTLYGQ TNSNNQFLHH HHHHHSLYGS TTTTTPYGAS DPIYHPHSSA PPASLFSYDQ  120
TGPGSGSGSS YNFLIPKTEV DFTSNRIGLN LGGRTYFSAA DDDFVSRLYR RSRPGESGMA  180
NSLSTPRCQA EGCNADLSHA KHYHRRHKVC EFHSKASTVV AAGLSQRFCQ QCSRFHLLSE  240
FDNGKRSCRK RLADHNRRRR KCHQSASATQ DTGTGKTTPK SPNDSGVKAS SSPSSNAPPT  300
ISLECFRQRQ FQTTASSSTS ASSSSNSMFF SSG
3D Structure ? help Back to Top
Structure
PDB ID Evalue Query Start Query End Hit Start Hit End Description
1ul4_A9e-311882611184squamosa promoter binding protein-like 4
Search in ModeBase
Expression -- UniGene ? help Back to Top
UniGene ID E-value Expressed in
At.4990.0floral meristem| flower
Expression -- Microarray ? help Back to Top
Source ID
Expression AtlasAT1G02065
AtGenExpressAT1G02065
Expression -- Description ? help Back to Top
Source Description
UniprotDEVELOPMENTAL STAGE: Expressed during plant development. During pollen development, required for crosporogenesis that leads to archesporial formation and for the histogenesis of the microsporangia. During ovules development, involved in the transition to meiosis of the megaspore mother cells. {ECO:0000269|PubMed:10524240, ECO:0000269|PubMed:12671094}.
UniprotTISSUE SPECIFICITY: Expressed in shoot apical region and early floral tissues. Transcripts levels increase in developing pollen sacs, and decrease in later stage of anther development. Strongly expressed in the placental region of the carpels. {ECO:0000269|PubMed:12671094, ECO:0000269|PubMed:17093870}.
Functional Description ? help Back to Top
Source Description
TAIREncodes an SBP-box gene, a member of the SPL gene family. Mutants are affected in micro- and megasporogenesis, trichome formation on sepals, and stamen filament elongation.
UniProtTrans-acting factor that binds specifically to the consensus nucleotide sequence 5'-TNCGTACAA-3'. Binds specifically to the 5'-GTAC-3' core sequence. Involved in development and floral organogenesis. Required for ovule differentiation, pollen production, filament elongation, seed formation and siliques elongation. Also seems to play a role in the formation of trichomes on sepals. May positively modulate gibberellin (GA) signaling in flower. {ECO:0000269|PubMed:12671094, ECO:0000269|PubMed:16095614, ECO:0000269|PubMed:17093870}.
Function -- GeneRIF ? help Back to Top
  1. Data demonstrate that miR156 is a quantitative, rather than spatial, modulator of SPL8 expression in leaf primordia and that SPL6 activity nonautonomously inhibits initiation of new leaves at the shoot apical meristem.
    [PMID: 18492871]
  2. SPL8 and miR156-targeted SPL genes control gynoecium patterning through interference with auxin homeostasis and signalling.
    [PMID: 23621152]
Binding Motif ? help Back to Top
Motif ID Method Source Motif file
MP00090SELEX26531826Download
Motif logo
Cis-element ? help Back to Top
SourceLink
PlantRegMapAT1G02065.1
Regulation -- PlantRegMap ? help Back to Top
Source Upstream Regulator Target Gene
PlantRegMapRetrieveRetrieve
Interaction ? help Back to Top
Source Intact With
BioGRIDAT1G69120
Phenotype -- Mutation ? help Back to Top
Source ID
T-DNA ExpressAT1G02065
Annotation -- Nucleotide ? help Back to Top
Source Hit ID E-value Description
GenBankAJ0116420.0AJ011642.1 Arabidopsis thaliana (ecotype Columbia) mRNA for squamosa promoter binding protein-like 8.
Annotation -- Protein ? help Back to Top
Source Hit ID E-value Description
RefseqNP_683267.10.0squamosa promoter binding protein-like 8
SwissprotQ8GXL30.0SPL8_ARATH; Squamosa promoter-binding-like protein 8
TrEMBLD7KP460.0D7KP46_ARALL; Putative uncharacterized protein
STRINGAT1G02065.10.0(Arabidopsis thaliana)
Orthologous Group ? help Back to Top
LineageOrthologous Group IDTaxa NumberGene Number
MalvidsOGEM70102743
Representative plantOGRP9717230
Publications ? help Back to Top
  1. Cardon G, et al.
    Molecular characterisation of the Arabidopsis SBP-box genes.
    Gene, 1999. 237(1): p. 91-104
    [PMID:10524240]
  2. Seki M, et al.
    Functional annotation of a full-length Arabidopsis cDNA collection.
    Science, 2002. 296(5565): p. 141-5
    [PMID:11910074]
  3. Unte US, et al.
    SPL8, an SBP-box gene that affects pollen sac development in Arabidopsis.
    Plant Cell, 2003. 15(4): p. 1009-19
    [PMID:12671094]
  4. Folta KM,Pontin MA,Karlin-Neumann G,Bottini R,Spalding EP
    Genomic and physiological studies of early cryptochrome 1 action demonstrate roles for auxin and gibberellin in the control of hypocotyl growth by blue light.
    Plant J., 2003. 36(2): p. 203-14
    [PMID:14535885]
  5. Albert VA, et al.
    Floral gene resources from basal angiosperms for comparative genomics research.
    BMC Plant Biol., 2005. 5: p. 5
    [PMID:15799777]
  6. Birkenbihl RP,Jach G,Saedler H,Huijser P
    Functional dissection of the plant-specific SBP-domain: overlap of the DNA-binding and nuclear localization domains.
    J. Mol. Biol., 2005. 352(3): p. 585-96
    [PMID:16095614]
  7. Zhang Y,Schwarz S,Saedler H,Huijser P
    SPL8, a local regulator in a subset of gibberellin-mediated developmental processes in Arabidopsis.
    Plant Mol. Biol., 2007. 63(3): p. 429-39
    [PMID:17093870]
  8. Xing S,Zachgo S
    ROXY1 and ROXY2, two Arabidopsis glutaredoxin genes, are required for anther development.
    Plant J., 2008. 53(5): p. 790-801
    [PMID:18036205]
  9. Wang JW,Schwab R,Czech B,Mica E,Weigel D
    Dual effects of miR156-targeted SPL genes and CYP78A5/KLUH on plastochron length and organ size in Arabidopsis thaliana.
    Plant Cell, 2008. 20(5): p. 1231-43
    [PMID:18492871]
  10. Xing S,Salinas M,H
    miR156-targeted and nontargeted SBP-box transcription factors act in concert to secure male fertility in Arabidopsis.
    Plant Cell, 2010. 22(12): p. 3935-50
    [PMID:21177480]
  11. Smaczniak C, et al.
    Characterization of MADS-domain transcription factor complexes in Arabidopsis flower development.
    Proc. Natl. Acad. Sci. U.S.A., 2012. 109(5): p. 1560-5
    [PMID:22238427]
  12. Xing S, et al.
    SPL8 and miR156-targeted SPL genes redundantly regulate Arabidopsis gynoecium differential patterning.
    Plant J., 2013. 75(4): p. 566-77
    [PMID:23621152]
  13. Debernardi JM, et al.
    Post-transcriptional control of GRF transcription factors by microRNA miR396 and GIF co-activator affects leaf size and longevity.
    Plant J., 2014. 79(3): p. 413-26
    [PMID:24888433]