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Gene : PHYB A. thaliana

DB identifier  ? AT2G18790 Secondary Identifier  ? locus:2005515
Name  ? phytochrome B Brief Description  phytochrome B
TAIR Computational Description  phytochrome B;(source:Araport11)
TAIR Curator Summary  Red/far-red photoreceptor involved in the regulation of de-etiolation. Exists in two inter-convertible forms: Pr and Pfr (active). Involved in the light-promotion of seed germination and in the shade avoidance response. Promotes seedling etiolation in both the presence and absence of phytochrome A. Overexpression results in etiolation under far-red light. Accumulates in the nucleus after exposure to far red light. The phosphorylation state of the Ser-86 residue of the phytochrome B molecule alters dark reversion of the molecule. The mRNA is cell-to-cell mobile.
TAIR Short Description  phytochrome B
TAIR Aliases  HY3, OOP1, PHYB

116 Gene Rifs

1 Organism

514 Publications

0 Synonyms

Genomics

Genome feature

Region: gene ? Length: 4706  
Location: Chr2:8139756-8144461

Gene models - PHYB AT2G18790

? 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

1 Located Features

1 Upstream Intergenic Region

Proteins

Curated comments from UniProt

Type Comment Proteins
PHYB_ARATH developmental stage Accumulates progressively in maturating seeds to reach a peak in dry seeds (PubMed:23708772). Expressed upon seed imbibition (PubMed:23708772).
A0A178VXX1_ARATH function Regulatory photoreceptor which exists in two forms that are reversibly interconvertible by light: the Pr form that absorbs maximally in the red region of the spectrum and the Pfr form that absorbs maximally in the far-red region.
PHYB_ARATH function Regulatory photoreceptor which exists in two forms that are reversibly interconvertible by light: the Pr form that absorbs maximally in the red region of the spectrum and the Pfr form that absorbs maximally in the far-red region. Photoconversion of Pr to Pfr induces an array of morphogenetic responses, whereas reconversion of Pfr to Pr cancels the induction of those responses. Pfr controls the expression of a number of nuclear genes including those encoding the small subunit of ribulose-bisphosphate carboxylase, chlorophyll A/B binding protein, protochlorophyllide reductase, rRNA, etc. It also controls the expression of its own gene(s) in a negative feedback fashion. Involved in the flowering time regulation. Involved in light-regulated circadian phase control that triggers stomatal aperture, stomatal conductance, and CO(2) assimilation. Implicated in red light perception, and, to a lower extent, in blue light signaling (PubMed:12177480). Controls thermomorphogenesis in the daytime and regulates temperature responses by associating with the promoters of key target genes in a temperature-dependent manner and subsequently repressing their expression in a PIF4-dependent manner (temperature-responsive transcriptional regulator); this process requires PTAC12/HMR/PAP5 (transcriptional activator) (PubMed:27789797, PubMed:30635559). Thermal timer that integrates temperature information over the course of the night (PubMed:27789797). Detabilizes UNE10/PIF8 in red light (PubMed:31732705).
PHYB_ARATH A0A178VXX1_ARATH similarity Belongs to the phytochrome family.
PHYB_ARATH subcellular location Cytoplasmic in darkness, but translocated to the nucleus upon illumination, when associated with PAPP5 into speckles (PubMed:15707897). Red light-activated (Pfr) phyB is observed in subnuclear light-induced structures called photobodies, while dark/far-red (Pr) phyB rapidly dissociates (PubMed:29263319).
PHYB_ARATH tissue specificity Expressed in fruits, flowers, leaves, stems, seedlings and roots.

2 Proteins

Function

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Expression

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Co-expression

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Data Source: ATTED-II
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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