Gene: AT2G43710 (Arabidopsis thaliana)

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Gene Identifier
Transcript Identifier
Gene Type
Coding gene
2 : 18120107-18122495 : positive


Gene family
(211 genes in 31 species)
specific family
(153 genes in 31 species)
specific family

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Plant stearoyl-acyl-carrier-protein desaturase family protein
Curated 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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Identifier Name
aliaslesion dwarf mimic 1
aliassuppressor of SA insensitive 2





Biological Process

GO termEvidence(s)ProviderDescriptionSource
GO:0006631IDA, IMP, IEAGene Ontologyfatty acid metabolic process1 2
GO:0006952IEA, IMPUniProtdefense response1 2 3 4 5 6 7 8 9 10 11 12 13 14
GO:0009695RCA, TASGene Ontologyjasmonic acid biosynthetic process1 2
GO:0008610IMPGene Ontologylipid biosynthetic process1
GO:0042742IMPGene Ontologydefense response to bacterium1
GO:0006636RCA, TASGene Ontologyunsaturated fatty acid biosynthetic process1 2
GO:2000022TASGene Ontologyregulation of jasmonic acid mediated signaling pathway1
GO:2000031TASGene Ontologyregulation of salicylic acid mediated signaling pathway1
GO:0051607IEP, IMPGene Ontologydefense response to virus1 2
GO:0002213IMPGene Ontologydefense response to insect1
GO:0000096RCAGene Ontologysulfur amino acid metabolic process1
GO:0006546RCAGene Ontologyglycine catabolic process1
GO:0006655RCAGene Ontologyphosphatidylglycerol biosynthetic process1
GO:0006733RCAGene Ontologyoxidoreduction coenzyme metabolic process1
GO:0006766RCAGene Ontologyvitamin metabolic process1
GO:0006816RCAGene Ontologycalcium ion transport1
GO:0007030RCAGene OntologyGolgi organization1
GO:0008652RCAGene Ontologycellular amino acid biosynthetic process1
GO:0009072RCAGene Ontologyaromatic amino acid family metabolic process1
GO:0009106RCAGene Ontologylipoate metabolic process1
GO:0009108RCAGene Ontologycoenzyme biosynthetic process1
GO:0009117RCAGene Ontologynucleotide metabolic process1
GO:0009651RCAGene Ontologyresponse to salt stress1
GO:0015995RCAGene Ontologychlorophyll biosynthetic process1
GO:0016117RCAGene Ontologycarotenoid biosynthetic process1
GO:0019288RCAGene Ontologyisopentenyl diphosphate biosynthetic process, methylerythritol 4-phosphate pathway1
GO:0019748RCAGene Ontologysecondary metabolic process1
GO:0044272RCAGene Ontologysulfur compound biosynthetic process1
GO:0006633IEAUniProtfatty acid biosynthetic process1 2 3 4 5 6 7 8 9 10 11 12 13
GO:0055114IEAInterProoxidation-reduction process
GO:0006629IEAPLAZA Homologylipid metabolic processHOM03D000646
GO:0043436IEAPLAZA Homologyoxoacid metabolic processHOM03D000646
GO:0032787IEAPLAZA Homologymonocarboxylic acid metabolic processHOM03D000646
GO:0044255IEAPLAZA Homologycellular lipid metabolic processHOM03D000646
GO:0006082IEAPLAZA Homologyorganic acid metabolic processHOM03D000646
GO:0019752IEAPLAZA Homologycarboxylic acid metabolic processHOM03D000646

Molecular Function

GO termEvidence(s)ProviderDescriptionSource
GO:0004768IDA, IMPGene Ontologystearoyl-CoA 9-desaturase activity1 2
GO:0045300IEA, IMPUniProtacyl-[acyl-carrier-protein] desaturase activity1 2 3 4 5 6 7 8 9 10 11 12 13 14
GO:0016491IEAInterProoxidoreductase activity
GO:0046872IEAUniProtmetal ion binding1 2 3 4 5 6 7 8 9 10 11 12 13
GO:0016717IEAPLAZA Homologyoxidoreductase activity, acting on paired donors, with oxidation of a pair of donors resulting in the reduction of molecular oxygen to two molecules of waterHOM03D000646
GO:0016705IEAPLAZA Homologyoxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygenHOM03D000646

Cellular Component

GO termEvidence(s)ProviderDescriptionSource
GO:0009507IDA, ISMGene Ontologychloroplast1 2
GO:0009570IEA, IDAUniProtchloroplast stroma1 2 3 4 5 6 7 8 9 10 11 12 13 14
GO:0009534IDAGene Ontologychloroplast thylakoid1
GO:0009536TASGene Ontologyplastid1

Color Legend

Experimental Evidence
Electronic Evidence
Computational Reviewed Evidence
GO Sources:   Primary     Orthology     Homology  
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InterPro Description
IPR009078Ferritin-like superfamily
IPR012348Ribonucleotide reductase-related
IPR005803Stearoyl-ACP desaturase, conserved site
IPR005067Fatty acid desaturase, type 2

Mapman id Description
11.1.15lipid metabolism.FA synthesis and FA elongation.ACP desaturase
No SignalP domains detected for this gene.