Protein Name:
Phytochrome-associated serine/threonine-protein phosphatase 1
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UniprotKB/SwissProt ID: Q9SX52 (Q9SX52)
Gene Name:
FYPP1
Organism: Arabidopsis thaliana (Mouse-ear cress)
Function: Catalytic subunit of protein phosphatase 6 (PP6) (Probable). Dephosphorylates phosphorylated phytochromes, with a preference toward Pfr forms. Plays a major role in the photoperiodic control of flowering time in long days by modulating phytochrome signals in flowering time control (By similarity). Involved in the regulation of polar auxin transport in roots (PubMed:22715043). Dephosphorylates directly the auxin efflux carriers PIN1 and PIN2, thus promoting their proper polar localization in root cell plasma membrane (PubMed:22715043). Acts antagonistically with the protein kinase PID to regulate the reversible phosphorylation of PIN and polar targeting, subsequently impacting polar auxin transport and plant development (PubMed:22715043). Involved in the regulation of abscisic acid (ABA) signaling during seed germination and postgermination seedling growth (PubMed:23404889). Functions as a negative regulator of ABA signaling through direct dephosphorylation and destabilization of ABI5 (PubMed:23404889). Acts antagonistically with the protein kinase SRK2E/SNRK2.6 to regulate ABI5 phosphorylation and ABA responses (PubMed:23404889). Involved in the regulation of phosphorylation status in hypocotyl phototropism (PubMed:30373470). Involved in the negative regulation of photomorphogenesis by controlling the stability and transcriptional activity of PIF3 and PIF4 proteins in the dark, via the regulation of their phosphorylation status (PubMed:31527236)
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Cytoplasm
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Graphical Visualization of S-nitrosylation Sites:
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The S-nitrosylation sites of Q9SX52
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| No. |
Position |
S-nitrosylated Peptide |
Secondary Structure of S-nitrosylated Peptide |
Solvent Accessibility of nitrosylated Site |
PubMed ID |
| 1 |
231 |
FNHINNLDLV C RAHQLVQEGL |
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