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    SSI2 Plant stearoyl-acyl-carrier-protein desaturase family protein [ Arabidopsis thaliana (thale cress) ]

    Gene ID: 818973, updated on 18-Sep-2024

    Summary

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    Official Symbol
    SSI2
    Official Full Name
    Plant stearoyl-acyl-carrier-protein desaturase family protein
    Primary source
    TAIR:AT2G43710
    Locus tag
    AT2G43710
    See related
    Araport:AT2G43710
    Gene type
    protein coding
    RefSeq status
    REVIEWED
    Organism
    Arabidopsis thaliana (ecotype: Columbia)
    Lineage
    Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis
    Also known as
    AtSSI2; F18O19.18; FAB2; FATTY ACID BIOSYNTHESIS 2; LDW1; lesion dwarf mimic 1; suppressor of SA insensitive 2
    Summary
    Encodes a stearoyl-ACP desaturase, involved in fatty acid desaturation. The ssi2 mutants have increased 18:0 and reduced 18:1 fatty acids. Exogenous application of glycerol to wild type plants mimics the ssi2 mutant phenotype. The altered 18:1 fatty acid content in the ssi2 mutants has an impact on SA- and JA-mediated defense signaling. ssi2 mutants resulted in hyper-resistance to green peach aphid and antibiosis activity in petiole exudates.
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    Genomic context

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    See SSI2 in Genome Data Viewer
    Location:
    chromosome: 2
    Exon count:
    3
    Sequence:
    Chromosome: 2; NC_003071.7 (18119873..18122889)

    Chromosome 2 - NC_003071.7Genomic Context describing neighboring genes Neighboring gene Concanavalin A-like lectin protein kinase family protein Neighboring gene Concanavalin A-like lectin protein kinase family protein Neighboring gene FAM136A-like protein (DUF842) Neighboring gene Mannose-binding lectin superfamily protein

    Genomic regions, transcripts, and products

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    Genomic Sequence:
    NC_003071.7

    Go to nucleotide: Graphics FASTA GenBank

    Bibliography

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    Related articles in PubMed

    1. Characterization of fab2 T-DNA insertion mutants in terms of fatty acid composition and plant phenotype. Park ME, et al. Plant Signal Behav, 2023 Dec 31. PMID 37204036, Free PMC Article
    2. A fatty acid desaturase modulates the activation of defense signaling pathways in plants. Kachroo P, et al. Proc Natl Acad Sci U S A, 2001 Jul 31. PMID 11481500, Free PMC Article
    3. A Mutant of Arabidopsis with Increased Levels of Stearic Acid. Lightner J, et al. Plant Physiol, 1994 Dec. PMID 12232421, Free PMC Article
    4. Arabidopsis ssi2-conferred susceptibility to Botrytis cinerea is dependent on EDS5 and PAD4. Nandi A, et al. Mol Plant Microbe Interact, 2005 Apr. PMID 15828688
    5. Role of salicylic acid and fatty acid desaturation pathways in ssi2-mediated signaling. Kachroo P, et al. Plant Physiol, 2005 Dec. PMID 16306139, Free PMC Article

    See all (19) citations in PubMed

    GeneRIFs: Gene References Into Functions

    Interactions

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    Products Interactant Other Gene Complex Source Pubs Description

    General gene information

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    NM_129933.4
    NM_180069.1

    Gene Ontology Provided by TAIR

    Function Evidence Code Pubs
    enables stearoyl-CoA 9-desaturase activity IDA
    Inferred from Direct Assay
    more info
    		 PubMed 
    enables stearoyl-CoA 9-desaturase activity IMP
    Inferred from Mutant Phenotype
    more info
    		  
    enables stearoyl-[ACP] desaturase activity IEA
    Inferred from Electronic Annotation
    more info
    		  
    enables stearoyl-[ACP] desaturase activity IMP
    Inferred from Mutant Phenotype
    more info
    		 PubMed 
    Process Evidence Code Pubs
    acts_upstream_of_or_within defense response IMP
    Inferred from Mutant Phenotype
    more info
    		 PubMed 
    acts_upstream_of_or_within defense response to bacterium IMP
    Inferred from Mutant Phenotype
    more info
    		 PubMed 
    acts_upstream_of_or_within defense response to insect IMP
    Inferred from Mutant Phenotype
    more info
    		 PubMed 
    acts_upstream_of_or_within defense response to virus IEP
    Inferred from Expression Pattern
    more info
    		 PubMed 
    acts_upstream_of_or_within defense response to virus IMP
    Inferred from Mutant Phenotype
    more info
    		 PubMed 
    acts_upstream_of_or_within fatty acid metabolic process IDA
    Inferred from Direct Assay
    more info
    		 PubMed 
    acts_upstream_of_or_within fatty acid metabolic process IMP
    Inferred from Mutant Phenotype
    more info
    		 PubMed 
    acts_upstream_of_or_within jasmonic acid biosynthetic process TAS
    Traceable Author Statement
    more info
    		 PubMed 
    acts_upstream_of_or_within lipid biosynthetic process IMP
    Inferred from Mutant Phenotype
    more info
    		 PubMed 
    acts_upstream_of_or_within regulation of jasmonic acid mediated signaling pathway TAS
    Traceable Author Statement
    more info
    		 PubMed 
    acts_upstream_of_or_within regulation of salicylic acid mediated signaling pathway TAS
    Traceable Author Statement
    more info
    		 PubMed 
    acts_upstream_of_or_within unsaturated fatty acid biosynthetic process TAS
    Traceable Author Statement
    more info
    		 PubMed 
    Component Evidence Code Pubs
    located_in chloroplast HDA PubMed 
    located_in chloroplast ISM
    Inferred from Sequence Model
    more info
    		  
    located_in chloroplast stroma HDA PubMed 
    located_in chloroplast thylakoid HDA PubMed 
    located_in plastid TAS
    Traceable Author Statement
    more info
    		 PubMed 

    General protein information

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    Preferred Names
    Plant stearoyl-acyl-carrier-protein desaturase family protein
    NP_181899.1
    • SSI2; FUNCTIONS IN: acyl-[acyl-carrier-protein] desaturase activity, stearoyl-CoA 9-desaturase activity; INVOLVED IN: in 10 processes; LOCATED IN: chloroplast, chloroplast stroma, plastid; EXPRESSED IN: 22 plant structures; EXPRESSED DURING: 15 growth stages; CONTAINS InterPro DOMAIN/s: Ribonucleotide reductase-related (InterPro:IPR012348), Ferritin/ribonucleotide reductase-like (InterPro:IPR009078), Fatty acid desaturase, type 2 (InterPro:IPR005067), Stearoyl-ACP desaturase, conserved site (InterPro:IPR005803); BEST Arabidopsis thaliana protein match is: Plant stearoyl-acyl-carrier-protein desaturase family protein (TAIR:AT3G02630.1); Has 948 Blast hits to 940 proteins in 221 species: Archae - 0; Bacteria - 436; Metazoa - 2; Fungi - 0; Plants - 452; Viruses - 0; Other Eukaryotes - 58 (source: NCBI BLink).
    NP_850400.1
    • SSI2; FUNCTIONS IN: acyl-[acyl-carrier-protein] desaturase activity, stearoyl-CoA 9-desaturase activity; INVOLVED IN: in 10 processes; LOCATED IN: chloroplast, plastid; EXPRESSED IN: 22 plant structures; EXPRESSED DURING: 15 growth stages; CONTAINS InterPro DOMAIN/s: Ribonucleotide reductase-related (InterPro:IPR012348), Ferritin/ribonucleotide reductase-like (InterPro:IPR009078), Fatty acid desaturase, type 2 (InterPro:IPR005067), Stearoyl-ACP desaturase, conserved site (InterPro:IPR005803); BEST Arabidopsis thaliana protein match is: Plant stearoyl-acyl-carrier-protein desaturase family protein (TAIR:AT3G02630.1); Has 946 Blast hits to 938 proteins in 221 species: Archae - 0; Bacteria - 436; Metazoa - 2; Fungi - 0; Plants - 450; Viruses - 0; Other Eukaryotes - 58 (source: NCBI BLink).

    NCBI Reference Sequences (RefSeq)

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    Genome Annotation

    The following sections contain reference sequences that belong to a specific genome build. Explain

    Reference assembly

    Genomic

    1. NC_003071.7 Reference assembly

      Range
      18119873..18122889
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

    mRNA and Protein(s)

    1. NM_129933.4 → NP_181899.1  Plant stearoyl-acyl-carrier-protein desaturase family protein [Arabidopsis thaliana]

      See identical proteins and their annotated locations for NP_181899.1

      Status: REVIEWED

      UniProtKB/Swiss-Prot
      O22832, Q0WKW6, Q42591, Q94AE9
      UniProtKB/TrEMBL
      A0A178VWD8, A0A5S9X6Q9
      Conserved Domains (1) summary
      PLN00179
      Location:3 → 401
      PLN00179; acyl- [acyl-carrier protein] desaturase

    2. NM_180069.1 → NP_850400.1  Plant stearoyl-acyl-carrier-protein desaturase family protein [Arabidopsis thaliana]

      See identical proteins and their annotated locations for NP_850400.1

      Status: REVIEWED

      UniProtKB/TrEMBL
      A0A178VWD8, A0A5S9X6Q9, F4IS32
      Conserved Domains (1) summary
      PLN00179
      Location:3 → 401
      PLN00179; acyl- [acyl-carrier protein] desaturase
    Nucleotide Protein
    Heading Accession and Version
    Protein Accession Links
    GenPept Link UniProtKB Link
    O22832.1

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