Information report for SIT1
Gene Details
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Functional Descriptions
- The Receptor-Like Kinase SIT1 Mediates Salt Sensitivity by Activating MAPK3/6 and Regulating Ethylene Homeostasis in Rice.
- Here, we demonstrate that rice (Oryza sativa) Salt Intolerance 1 (SIT1), a lectin receptor-like kinase expressed mainly in root epidermal cells, mediates salt sensitivity.
- SIT1 mediates ethylene production and salt-induced ethylene signaling. SIT1 promotes accumulation of reactive oxygen species (ROS), leading to growth inhibition and plant death under salt stress, which occurred in an MPK3/6- and ethylene signaling-dependent manner in Arabidopsis thaliana.
- Consequently, by blocking SIT1 phosphorylation, B’κ inhibits and fine tunes SIT1 activity to balance plant growth and stress adaptation.
- Mutual regulation of receptor-like kinase SIT1 and B’κ-PP2A shapes the early response of rice to salt stress.
- The receptor-like kinase SIT1 acts as a sensor in rice roots, relaying salt stress signals via elevated kinase activity to enhance salt sensitivity.
- Here, we demonstrate that Protein Phosphatase 2A (PP2A) regulatory subunit B’κ constrains SIT1 activity under salt stress.
- During early salt stress, activated SIT1 phosphorylates B’κ; this not only enhances its binding with SIT1, it also promotes B’κ protein accumulation via Ser502 phosphorylation.
- B’κ-PP2A deactivates SIT1 directly by dephosphorylating the kinase at Thr515/516, a salt-induced phosphorylation site in the activation loop that is essential for SIT1 activity.
Functional Keywords
Literature and News
- The Receptor-Like Kinase SIT1 Mediates Salt Sensitivity by Activating MAPK3/6 and Regulating Ethylene Homeostasis in Rice . DOI: 10.1105/tpc.114.125187 ; PMID: 24907341
- Mutual Regulation of Receptor-Like Kinase SIT1 and B’κ-PP2A Shapes the Early Response of Rice to Salt Stress . DOI: 10.1105/tpc.18.00706 ; PMID: 31221736
Gene Resources
- UniProt: Q6H7D2
- EMBL: AK107491, AP004768, AP008208
- AlphaFoldDB: Q6H7D2
- EnsemblPlants: Os02t0640500-01
- Gramene: Os02t0640500-01
- KEGG: dosa:Os02g0640500, osa:4330111
- Orthologous matrix: EWEVAFG
- InterPro: IPR000719, IPR001220, IPR008271
- PANTHER: PTHR27007
- SUPFAM: SSF49899, SSF56112
- PROSITE: PS00107, PS00108, PS00307
- Gene3D: 1.10.510.10, 2.60.120.200, 3.30.200.20
- OrthoDB: Q6H7D2
- SWISS-MODEL: Q6H7D2
- Conserved Domain Database: cd06899, cd14066
- eggNOG: ENOG502QSJ4
Sequences
cDNA Sequence
- >LOC_Os02g42780.1
AAGTTTGGCGCAAACGCCATGCGGCGTCCCGAGCTAATCATGCGGTCCCTTCCTCTAATTCTCTTCCTAAGCCTTGGGAGTTTCCACCTCGCCGCAGCCGCCGTTGATGACCAGTTCACCTTCGACGGCTTCGCCGGCGTGAACCTCACACTCGACGGCACGGCCGTGGTCACGCCGGGCGGCCTCCTCATGCTGACGAACGGCACGACTCTGCTGAAAGGCCACGCCTTCTACCCTTCTCCCCTGCGTTTCTTTCACGAGGCGACGAGCGGCGGCGGATCCTCCACCGTGCGGTCCTTCTCGACGGCGTTCGTGTTCGGCATCGTCAGCGAGTACGCCGACCTGAGCAGCCCCGGCCTGGCGTTCGTCGTCGCCAAGAGCCGCGACTTCTCGTCGGCGCTGCAGAGCCAGTACATGGGCCTGGCCAACGCGCGCAACAACGGCAACGCCAGCAACCACTTCCTCGCCGTGGAGCTGGACACCATCGTCAACGCCGAGTTCGGCGACATGAGCGACAACCACGTCGGGATCGACGTGGACGGCCTCGCGTCCGCCGCCGCCGACGACGCGGGCTACCACGACGACCGCACCGGCGCGTTCGTGAACATGAGCCTGCTCAGCCGCGCGGCGGCGCGGGTGTGGGTGGACTTCGACGCGCGCACCTCGCTCGTCAACGTCACCATGGCTCCCCTCGAGCTGCCCAAGCCGACGACGCCGCTGCTCTCCGCCGCCGTGAACCTCTCGGCCGTGATCGAAGACGAAGCCTACGTCGGCTTCTCCTCGTCCACCGGCGTCGTCGCGAGCCGCCACTACGTGCTTGCCTGGAGCTTCAAGATGGACGGGCCAGCACCATCGCTAAACGTATCAAAGCTGCCGGCGTTGCCTGTCACGATCGCCAGGGCTCCGTCCAACGTTCTGAAGATACTATTGCCCATAGCCTCGGCCGCACTGGTGTCGGCATTGGCCATTGCTGTTCTTGTGATTCACCGGAGACGACGCAGGTATGCGGAGCTTAAAGAGGAGTGGGAGGTTGCGTTTGGGCCACACCGGTTCTCATACAAGGATCTGTTCCGTGCCACGAATGGTTTCTCCGATGAGCGATTGCTTGGCTTTGGAGGATTTGGAAGGGTGTACAAGGGAGTACTACTGGTATCCCGAGTGGAGATTGCAGTGAAGAAGGTATCTCACGAGTCGAGGCAGGGAATGAAGGAGTTCATTGCCGAGGTGGTTAGCATTGGTCAACTTCGACACCGGAACCTTGTGCAGTTGCTTGGATATTGTCGGCAGAAGGGTGAGCTACTGTTAGTCTATGATTATATGCCAAATGGTAGTCTTGATAAGTATCTGTATGCTGAGAACAGCAAAATCTTGAGTTGGGCTCAAAGGTTTAGAATCATCAAAGGCATCGCATCGAGCATATTGTATCTCCATGAGGATTGGGAACAAGTCGTTCTGCATCGAGACATCAAGGCAAGCAACGTATTGTTGGACGCCGAAATGAACTGTCGGCTAGGTGACTTTGGCCTTGCAAGGTTATATGATCGTGGCACCGACCCACACACCACACACGTGGTTGGCACAATAGGGTACCTAGCCCCCGAGCTAGGGCACACCGGCAGGCCATCGAAGGCGTCCGACATCTTCGCCTTCGGTGTGTTCATGCTAGAGGTTACCTGCGGACGGCGGCCTGTCTTGCAAGACACGAACGGCGGTCAACTCTTGTTGGTGGACATGGTGCTGGAGCATTGGCGGCAAGGGACGGTCACTGACGCTGTGGACCCACGGCTGCAAGGCGACTTTGCCGTGGAAGAAGCAAGCCTGGTGCTGAAACTATGCTTGCTTTGTTCACATCCTCTGCCCAGTGCTCGTCCGGGCATACGGCAAGTCGTGCAGTTGCTAGACGGTGCCATGCCACTCCCAGAGCTATCACAAGCTCACCTAAGCTGTAACATGCTGGCCTTGATGCAAAATCAGATGGGCAACTCATGCTCTGTTGCGTCGTCGGTAGCTGGTAATATCTCTGACATTCCTCGAGCGAGATGACCACAAGGTTTTAGTCTCTTCGCTATAGGATTTGACCATAGTGATAGATTACTCGGTGAAAAGGAAATATCGTAGATTACTCTGA
CDS Sequence
- >LOC_Os02g42780.1
ATGCGGCGTCCCGAGCTAATCATGCGGTCCCTTCCTCTAATTCTCTTCCTAAGCCTTGGGAGTTTCCACCTCGCCGCAGCCGCCGTTGATGACCAGTTCACCTTCGACGGCTTCGCCGGCGTGAACCTCACACTCGACGGCACGGCCGTGGTCACGCCGGGCGGCCTCCTCATGCTGACGAACGGCACGACTCTGCTGAAAGGCCACGCCTTCTACCCTTCTCCCCTGCGTTTCTTTCACGAGGCGACGAGCGGCGGCGGATCCTCCACCGTGCGGTCCTTCTCGACGGCGTTCGTGTTCGGCATCGTCAGCGAGTACGCCGACCTGAGCAGCCCCGGCCTGGCGTTCGTCGTCGCCAAGAGCCGCGACTTCTCGTCGGCGCTGCAGAGCCAGTACATGGGCCTGGCCAACGCGCGCAACAACGGCAACGCCAGCAACCACTTCCTCGCCGTGGAGCTGGACACCATCGTCAACGCCGAGTTCGGCGACATGAGCGACAACCACGTCGGGATCGACGTGGACGGCCTCGCGTCCGCCGCCGCCGACGACGCGGGCTACCACGACGACCGCACCGGCGCGTTCGTGAACATGAGCCTGCTCAGCCGCGCGGCGGCGCGGGTGTGGGTGGACTTCGACGCGCGCACCTCGCTCGTCAACGTCACCATGGCTCCCCTCGAGCTGCCCAAGCCGACGACGCCGCTGCTCTCCGCCGCCGTGAACCTCTCGGCCGTGATCGAAGACGAAGCCTACGTCGGCTTCTCCTCGTCCACCGGCGTCGTCGCGAGCCGCCACTACGTGCTTGCCTGGAGCTTCAAGATGGACGGGCCAGCACCATCGCTAAACGTATCAAAGCTGCCGGCGTTGCCTGTCACGATCGCCAGGGCTCCGTCCAACGTTCTGAAGATACTATTGCCCATAGCCTCGGCCGCACTGGTGTCGGCATTGGCCATTGCTGTTCTTGTGATTCACCGGAGACGACGCAGGTATGCGGAGCTTAAAGAGGAGTGGGAGGTTGCGTTTGGGCCACACCGGTTCTCATACAAGGATCTGTTCCGTGCCACGAATGGTTTCTCCGATGAGCGATTGCTTGGCTTTGGAGGATTTGGAAGGGTGTACAAGGGAGTACTACTGGTATCCCGAGTGGAGATTGCAGTGAAGAAGGTATCTCACGAGTCGAGGCAGGGAATGAAGGAGTTCATTGCCGAGGTGGTTAGCATTGGTCAACTTCGACACCGGAACCTTGTGCAGTTGCTTGGATATTGTCGGCAGAAGGGTGAGCTACTGTTAGTCTATGATTATATGCCAAATGGTAGTCTTGATAAGTATCTGTATGCTGAGAACAGCAAAATCTTGAGTTGGGCTCAAAGGTTTAGAATCATCAAAGGCATCGCATCGAGCATATTGTATCTCCATGAGGATTGGGAACAAGTCGTTCTGCATCGAGACATCAAGGCAAGCAACGTATTGTTGGACGCCGAAATGAACTGTCGGCTAGGTGACTTTGGCCTTGCAAGGTTATATGATCGTGGCACCGACCCACACACCACACACGTGGTTGGCACAATAGGGTACCTAGCCCCCGAGCTAGGGCACACCGGCAGGCCATCGAAGGCGTCCGACATCTTCGCCTTCGGTGTGTTCATGCTAGAGGTTACCTGCGGACGGCGGCCTGTCTTGCAAGACACGAACGGCGGTCAACTCTTGTTGGTGGACATGGTGCTGGAGCATTGGCGGCAAGGGACGGTCACTGACGCTGTGGACCCACGGCTGCAAGGCGACTTTGCCGTGGAAGAAGCAAGCCTGGTGCTGAAACTATGCTTGCTTTGTTCACATCCTCTGCCCAGTGCTCGTCCGGGCATACGGCAAGTCGTGCAGTTGCTAGACGGTGCCATGCCACTCCCAGAGCTATCACAAGCTCACCTAAGCTGTAACATGCTGGCCTTGATGCAAAATCAGATGGGCAACTCATGCTCTGTTGCGTCGTCGGTAGCTGGTAATATCTCTGACATTCCTCGAGCGAGATGA
Protein Sequence
- >LOC_Os02g42780.1
MRRPELIMRSLPLILFLSLGSFHLAAAAVDDQFTFDGFAGVNLTLDGTAVVTPGGLLMLTNGTTLLKGHAFYPSPLRFFHEATSGGGSSTVRSFSTAFVFGIVSEYADLSSPGLAFVVAKSRDFSSALQSQYMGLANARNNGNASNHFLAVELDTIVNAEFGDMSDNHVGIDVDGLASAAADDAGYHDDRTGAFVNMSLLSRAAARVWVDFDARTSLVNVTMAPLELPKPTTPLLSAAVNLSAVIEDEAYVGFSSSTGVVASRHYVLAWSFKMDGPAPSLNVSKLPALPVTIARAPSNVLKILLPIASAALVSALAIAVLVIHRRRRRYAELKEEWEVAFGPHRFSYKDLFRATNGFSDERLLGFGGFGRVYKGVLLVSRVEIAVKKVSHESRQGMKEFIAEVVSIGQLRHRNLVQLLGYCRQKGELLLVYDYMPNGSLDKYLYAENSKILSWAQRFRIIKGIASSILYLHEDWEQVVLHRDIKASNVLLDAEMNCRLGDFGLARLYDRGTDPHTTHVVGTIGYLAPELGHTGRPSKASDIFAFGVFMLEVTCGRRPVLQDTNGGQLLLVDMVLEHWRQGTVTDAVDPRLQGDFAVEEASLVLKLCLLCSHPLPSARPGIRQVVQLLDGAMPLPELSQAHLSCNMLALMQNQMGNSCSVASSVAGNISDIPRAR*