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Gene : HB-3 A. thaliana

DB identifier  ? AT2G33880 Secondary Identifier  ? locus:2057614
Name  ? homeobox-3 Brief Description  homeobox-3
TAIR Computational Description  homeobox-3;(source:Araport11)
TAIR Curator Summary  Encodes a protein with similarity to WUS type homeodomain protein. Required for meristem growth and development and acts through positive regulation of WUS. Loss of function phenotypes include embryo lethality, hyponastic cotyledons, reduced root development and smaller meristems. Phenotypes can be rescued by addition of sucrose in the growth media. Overexpression can partially rescue the triple mutant cytokinin receptor phenotype suggesting HB-3 is a downstream effector of cytokinin signaling.
TAIR Short Description  homeobox-3
TAIR Aliases  HB-3, STIP, WOX9, WOX9A

5 Gene Rifs

1 Organism

26 Publications

0 Synonyms

Genomics

Genome feature

Region: gene ? Length: 2442  
Location: Chr2:14341355-14343796 reverse strand

Gene models - HB-3 AT2G33880

? Gene models

Transcripts: 2  Exons: 7  Introns: 5 

Overlapping Features

? Genome features that overlap coordinates of this Gene

8 Child Features

1 Cross References

1 Downstream Intergenic Region

0 Located Features

1 Upstream Intergenic Region

Proteins

Curated comments from UniProt

Type Comment Proteins
WOX9_ARATH developmental stage First detected in the basal daughter cell of the zygote (PubMed:14711878). Unlike WOX2 and WOX8, it is not expressed in the egg cell or the zygote (PubMed:14711878). During two subsequent rounds of transverse cell divisions, it is restricted to the hypophysis (PubMed:14711878). At the 8-cell stage, it expands into the central domain of the embryo, in addition to weakening in the hypophysis (PubMed:14711878). After protoderm formation, expression in the central embryo domain is restricted to the protodermal cells and also disappears from the hypophyseal cell (PubMed:14711878). In subsequent stages, a ring of expression remains at the presumptive boundary between root and hypocotyl, at about the same position as WOX2 expression in heart stage embryos (PubMed:14711878). In addition to its embryonic expression, it is expressed postembryonically in the epidermal cells of the placenta during gynoecium development, but not in the developing ovules (PubMed:14711878). The placental expression disappears soon after fertilization (PubMed:14711878). Expression dynamics require MP and BDL, but not GN activity (PubMed:14711878). Detected as early as the first zygotic division in both the apical and the basal daughter cells (PubMed:17706632). By late globular to early transition stage, the protein is evenly distributed through out the embryo and the suspensor (PubMed:17706632). The basal half of the embryo, especially cells in the protoderm layer, starts to show slightly higher levels of expression by early heart stage (PubMed:17706632).
WOX9_ARATH function Homeodomain transcription factor required for meristem growth and early development (PubMed:15753038). Promotes cell proliferation and prevents premature differentiation in meristematic tissues during postembryonic development (PubMed:15753038). Essential for maintaining tissue growth during embryogenesis (PubMed:17706632). May act by repressing TSS to promote meristematic proliferation (PubMed:21185286). Involved in the transcriptional activation of a subset of cytokinin response factors (PubMed:20110319). May act as a negative regulator of cytokinin signaling in the dark (PubMed:21057190).
A0A178VQA8_ARATH WOX9_ARATH similarity Belongs to the WUS homeobox family.
WOX9_ARATH tissue specificity Expressed in the basal cell and later at the boundary between suspensor and proembryo (PubMed:14711878). Expressed at low levels in proliferating tissues post embryonically (PubMed:15753038). Detected in vegetative shoot apical meristem, leaf primordia, floral meristems, emerging floral organs, epidermal layer of the placenta and in the upper portion of the root meristematic zone (PubMed:15753038, PubMed:20110319).

2 Proteins

Function

Interactions

Interaction Network

Expression

eFP Visualization

Data Source: BAR




Co-expression

Querying ATTED Service...
Data Source: ATTED-II
Top N
LS: LS is a monotonic transformation (negative logit) of MR index. Larger LS indicates stronger co-expression.

 

Homology

Phytozome Homologs

Data Source: Phytozome


0 Homologues

 

Other

9 Data Sets