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Protein

Nuclear transcription factor Y subunit B-9

Gene

NFYB9

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Component of the NF-Y/HAP transcription factor complex. The NF-Y complex stimulates the transcription of various genes by recognizing and binding to a CCAAT motif in promoters. Acts as a central regulator of the embryogenesis. Required for the speciation of cotyledon identity and the completion of embryo maturation. Controls seed storage protein genes through the regulation of FUS3 and ABI3. Involved in the blue light (BL) and abscisic acid (ABA) signaling pathways.4 Publications

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
DNA bindingi64 – 70By similarity7

GO - Molecular functioni

GO - Biological processi

  • abscisic acid-activated signaling pathway Source: UniProtKB
  • blue light signaling pathway Source: UniProtKB
  • embryo development ending in seed dormancy Source: TAIR
  • positive regulation of fatty acid biosynthetic process Source: TAIR
  • positive regulation of transcription, DNA-templated Source: TAIR
  • somatic embryogenesis Source: TAIR
  • transcription, DNA-templated Source: UniProtKB-KW

Keywordsi

Molecular functionActivator, DNA-binding
Biological processAbscisic acid signaling pathway, Transcription, Transcription regulation

Names & Taxonomyi

Protein namesi
Recommended name:
Nuclear transcription factor Y subunit B-9
Short name:
AtNF-YB-9
Alternative name(s):
Protein LEAFY COTYLEDON 1
Gene namesi
Name:NFYB9
Synonyms:LEC1
Ordered Locus Names:At1g21970
ORF Names:T26F17.20
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chromosome 1

Organism-specific databases

AraportiAT1G21970
TAIRilocus:2201163 AT1G21970

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Chloroplast Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertion Graphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Nucleus

Pathology & Biotechi

Disruption phenotypei

Altered response to blue light (BL) and abscisic acid (ABA).1 Publication

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Mutagenesisi85D → K: Affects function. 1 Publication1

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00002046231 – 238Nuclear transcription factor Y subunit B-9Add BLAST238

Proteomic databases

PaxDbiQ9SFD8

Expressioni

Tissue specificityi

Expressed in green siliques. Present in etiolated seedlings.2 Publications

Developmental stagei

Accumulates during seed development in embryo cell types and in endosperm tissue.1 Publication

Gene expression databases

ExpressionAtlasiQ9SFD8 differential
GenevisibleiQ9SFD8 AT

Interactioni

Subunit structurei

Heterotrimeric transcription factor composed of three components, NF-YA, NF-YB and NF-YC. NF-YB and NF-YC must interact and dimerize for NF-YA association and DNA binding (By similarity). Interacts with PRN1.By similarity1 Publication

GO - Molecular functioni

Protein-protein interaction databases

BioGridi24039, 11 interactors
IntActiQ9SFD8, 1 interactor
STRINGi3702.AT1G21970.1

Structurei

3D structure databases

ProteinModelPortaliQ9SFD8
SMRiQ9SFD8
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni91 – 102Subunit association domain (SAD)By similarityAdd BLAST12

Sequence similaritiesi

Belongs to the NFYB/HAP3 subunit family.Curated

Phylogenomic databases

eggNOGiKOG0869 Eukaryota
COG2036 LUCA
HOGENOMiHOG000211832
InParanoidiQ9SFD8
OMAiTAWGRRF
OrthoDBiEOG09360PJ1

Family and domain databases

Gene3Di1.10.20.10, 1 hit
InterProiView protein in InterPro
IPR003958 CBFA_NFYB_domain
IPR009072 Histone-fold
IPR003956 Transcrpt_fac_NFYB/HAP3_CS
PfamiView protein in Pfam
PF00808 CBFD_NFYB_HMF, 1 hit
SUPFAMiSSF47113 SSF47113, 1 hit
PROSITEiView protein in PROSITE
PS00685 NFYB_HAP3, 1 hit

Sequencei

Sequence statusi: Complete.

Q9SFD8-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MERGAPFSHY QLPKSISELN LDQHSNNPTP MTSSVVVAGA GDKNNGIVVQ
60 70 80 90 100
QQPPCVAREQ DQYMPIANVI RIMRKTLPSH AKISDDAKET IQECVSEYIS
110 120 130 140 150
FVTGEANERC QREQRKTITA EDILWAMSKL GFDNYVDPLT VFINRYREIE
160 170 180 190 200
TDRGSALRGE PPSLRQTYGG NGIGFHGPSH GLPPPGPYGY GMLDQSMVMG
210 220 230
GGRYYQNGSS GQDESSVGGG SSSSINGMPA FDHYGQYK
Length:238
Mass (Da):26,070
Last modified:May 31, 2011 - v2
Checksum:i7B5444BB1DD0A7EA
GO

Sequence cautioni

The sequence AAC39488 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended.Curated
The sequence AAF16537 differs from that shown. Reason: Erroneous gene model prediction.Curated

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti17S → T in BX817269 (PubMed:14993207).Curated1
Sequence conflicti36V → I in AAC39488 (PubMed:9657152).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AC013482 Genomic DNA Translation: AAF16537.1 Sequence problems.
CP002684 Genomic DNA Translation: AEE30179.1
AB493474 mRNA Translation: BAH30312.1
BX817269 mRNA No translation available.
AF036684 Genomic DNA Translation: AAC39488.1 Different initiation.
PIRiG86352
RefSeqiNP_173616.2, NM_102046.5
UniGeneiAt.28011

Genome annotation databases

EnsemblPlantsiAT1G21970.1; AT1G21970.1; AT1G21970
GeneIDi838800
GrameneiAT1G21970.1; AT1G21970.1; AT1G21970
KEGGiath:AT1G21970

Similar proteinsi

Entry informationi

Entry nameiNFYB9_ARATH
AccessioniPrimary (citable) accession number: Q9SFD8
Secondary accession number(s): C0SUX1, O81130
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 8, 2005
Last sequence update: May 31, 2011
Last modified: May 23, 2018
This is version 114 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
  2. SIMILARITY comments
    Index of protein domains and families

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