Gene: AT1G21970 (Arabidopsis thaliana)

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Gene Identifier
AT1G21970
Transcript Identifier
AT1G21970.1
Gene Type
Coding gene
Location
1 : 7727750-7729571 : negative

Family

Gene family
HOM03M000215
(230 genes in 16 species)
specific family

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Descriptions

Description
Histone superfamily protein
Curated Summary
Transcriptional activator of genes required for both embryo maturation and cellular differentiation. Sequence is similar to HAP3 subunit of the CCAAT-box binding factor. HAP3 subunit is divided into three domains: an amino-terminal A domain, a central B domain, and a carboxyl-terminal C domain. LEC1 shared high similarity with other HAP3 homologs only in central, B domain. LEC1 is required for the specification of cotyledon identity and the completion of embryo maturation. It was sufficient to induce embryogenic programs in vegetative cells, suggesting that LEC1 is a major embryonic regulator that mediates the switch between embryo and vegetative development. Mutants are desiccation intolerant, have trichomes on cotyledons and exhibit precocious meristem activation. Levels of the ABI3 and FUS3 transcripts were significantly reduced in developing siliques of the lec1-1 mutants, indicating that LEC1 down-regulates FUS3 and ABI3.When LEC1 is overexpressed from an inducible promoter, the expression of numerous genes involved in fatty acid biosynthesis is increased suggesting a role in positive regulation of FA biosynthesis.
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Identifiers

Identifier Name
aliasLEC1
aliasNF-YB9
aliasAtLEC1
aliasEMB 212
aliasNUCLEAR FACTOR Y, SUBUNIT B9
aliasEMB212
aliasEMBRYO DEFECTIVE 212
aliasLEAFY COTYLEDON 1
uniprotQ9SFD8

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Biological Process

GO termEvidence(s)ProviderDescriptionSource
GO:0010262IMPUniProtsomatic embryogenesis1 2 3 4 5 6 7 8 9 10
GO:0009738IMPUniProtabscisic acid-activated signaling pathway1 2 3 4 5 6 7 8 9 10
GO:0009785IMPUniProtblue light signaling pathway1 2 3 4 5 6 7 8 9 10
GO:0045723IMPUniProtpositive regulation of fatty acid biosynthetic process1 2 3 4 5 6 7 8 9 10
GO:0045893IDA, IMPRCA, UniProtpositive regulation of transcription, DNA-dependent1 2 3 4 5 6 7 8 9 10 11 12
GO:0009793IMPGene Ontologyembryo development ending in seed dormancy1
GO:0006351IEAUniProttranscription, DNA-templated1 2 3 4 5 6 7 8 9
GO:0006355IEAInterProregulation of transcription, DNA-dependent
GO:2001141IEAPLAZA Homologyregulation of RNA biosynthetic processHOM03M000215

Molecular Function

GO termEvidence(s)ProviderDescriptionSource
GO:0003700ISSUniProtsequence-specific DNA binding transcription factor activity1 2 3 4 5 6 7 8 9 10
GO:0005515IPIGene Ontologyprotein binding1
GO:0043565IEAUniProtsequence-specific DNA binding1 2 3 4 5 6 7 8 9
GO:0046982IEAInterProprotein heterodimerization activity
GO:0003677IEAInterProDNA binding
GO:0046983IEAPLAZA Homologyprotein dimerization activityHOM03M000215

Cellular Component

GO termEvidence(s)ProviderDescriptionSource
GO:0005634IEA, ISMUniProtnucleus1 2 3 4 5 6 7 8 9 10
GO:0005622IEAInterProintracellular

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Experimental Evidence
Electronic Evidence
Computational Reviewed Evidence
GO Sources:   Primary     Orthology     Homology  
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InterPro Description
IPR003958Transcription factor CBF/NF-Y/archaeal histone
IPR003957Transcription factor, NFYB/HAP3 subunit
IPR003956Transcription factor, NFYB/HAP3, conserved site
IPR009072Histone-fold

Mapman id Description
27.3.15RNA.regulation of transcription.CCAAT box binding factor family, HAP3
No SignalP domains detected for this gene.
DatabaseType
PlnTFDBCCAAT
PlantTFDBNF-YB