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Agrisera
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Store lyophilized/reconstituted at -20°C; once reconstituted make aliquots to avoid repeated freeze-thaw cycles. Please, remember to spin tubes briefly prior to opening them to avoid any losses that might occur from lyophilized material adhering to the cap or sides of the tubes.
For reconstitution add 50 µL of sterile water.
Specific Species Reactivity: Arabidopsis thaliana
Phytochrome B is a red/far-red light-sensing photoreceptor that accumulates in the cytosol in darkness predominantly in the inactive Pr form and, upon red light conversion to the active Pfr form, translocates into the nucleus where it concentrates in nuclear photobodies and initiates transcriptional reprogramming. It is a soluble dimeric chromoprotein with an N-terminal photosensory module that binds a linear tetrapyrrole chromophore and contains conserved PAS-GAF-PHY subdomains responsible for photoconversion, coupled to a C-terminal regulatory module bearing histidine kinase-related signaling motifs and a nuclear localization activity that supports light-dependent nuclear accumulation. Biologically, phytochrome B functions as a central light-quality and light-quantity sensor controlling photomorphogenesis, including de-etiolation and shade avoidance, largely by directly engaging PHYTOCHROME INTERACTING FACTOR (PIF) bHLH transcription factors in the nucleus to promote their rapid inhibition through sequestration and/or ubiquitin-proteasome-mediated turnover, thereby modulating downstream gene expression programs and growth responses.
仅用于科研。不用于诊断过程。未经明确授权不得转售。
蛋白别名: AT2G18790; HY3; MSF3.17; MSF3_17; OOP1; OUT OF PHASE 1; PHYB; PHYTOCHROME B