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. |
Function
Gene Ontology
Interactions
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