Gene/Proteome Database (LMPD)

LMPD ID
LMP009773
Gene ID
818973
Species
Arabidopsis thaliana (Arabidopsis)
Gene Name
acyl-[acyl-carrier-protein] desaturase
Gene Symbol
SSI2
Synonyms
F18O19.18; FAB2; FATTY ACID BIOSYNTHESIS 2; SSI2
Chromosome
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.
Orthologs
View orthologs and multiple alignments for SSI2

Proteins

acyl-[acyl-carrier-protein] desaturase
Refseq ID NP_181899
Protein GI 15224342
UniProt ID O22832
mRNA ID NM_129933
Length 401
RefSeq Status REVIEWED
MALKFNPLVASQPYKFPSSTRPPTPSFRSPKFLCLASSSPALSSGPKEVESLKKPFTPPREVHVQVLHSMPPQKIEIFKSMENWAEENLLIHLKDVEKSWQPQDFLPDPASDGFEDQVRELRERARELPDDYFVVLVGDMITEEALPTYQTMLNTLDGVRDETGASPTSWAIWTRAWTAEENRHGDLLNKYLYLSGRVDMRQIEKTIQYLIGSGMDPRTENNPYLGFIYTSFQERATFISHGNTARQAKEHGDIKLAQICGTIAADEKRHETAYTKIVEKLFEIDPDGTVMAFADMMRKKISMPAHLMYDGRNDNLFDNFSSVAQRLGVYTAKDYADILEFLVGRWKIQDLTGLSGEGNKAQDYLCGLAPRIKRLDERAQARAKKGPKIPFSWIHDREVQL
acyl-[acyl-carrier-protein] desaturase
Refseq ID NP_850400
Protein GI 30689469
UniProt ID F4IS32
mRNA ID NM_180069
Length 401
RefSeq Status REVIEWED
MALKFNPLVASQPYKFPSSTRPPTPSFRSPKFLCLASSSPALSSGPKSVESLKKPFTPPREVHVQVLHSMPPQKIEIFKSMENWAEENLLIHLKDVEKSWQPQDFLPDPASDGFEDQVRELRERARELPDDYFVVLVGDMITEEALPTYQTMLNTLDGVRDETGASPTSWAIWTRAWTAEENRHGDLLNKYLYLSGRVDMRQIEKTIQYLIGSGMDPRTENNPYLGFIYTSFQERATFISHGNTARQAKEHGDIKLAQICGTIAADEKRHETAYTKIVEKLFEIDPDGTVMAFADMMRKKISMPAHLMYDGRNDNLFDNFSSVAQRLGVYTAKDYADILEFLVGRWKIQDLTGLSGEGNKAQDYLCGLAPRIKRLDERAQARAKKGPKIPFSWIHDREVQL

Gene Information

Entrez Gene ID
818973
Gene Name
acyl-[acyl-carrier-protein] desaturase
Gene Symbol
SSI2
Species
Arabidopsis thaliana

Gene Ontology (GO Annotations)

GO ID Source Type Description
GO:0009507 IDA:TAIR C chloroplast
GO:0009570 IDA:TAIR C chloroplast stroma
GO:0009534 IDA:TAIR C chloroplast thylakoid
GO:0009536 TAS:TAIR C plastid
GO:0045300 IMP:TAIR F acyl-[acyl-carrier-protein] desaturase activity
GO:0046872 IEA:UniProtKB-KW F metal ion binding
GO:0004768 IDA:TAIR F stearoyl-CoA 9-desaturase activity
GO:0042742 IMP:TAIR P defense response to bacterium
GO:0002213 IMP:TAIR P defense response to insect
GO:0051607 IMP:TAIR P defense response to virus
GO:0006631 IDA:TAIR P fatty acid metabolic process
GO:0008610 IMP:TAIR P lipid biosynthetic process
GO:2000022 TAS:TAIR P regulation of jasmonic acid mediated signaling pathway
GO:2000031 TAS:TAIR P regulation of salicylic acid mediated signaling pathway
GO:0006636 TAS:TAIR P unsaturated fatty acid biosynthetic process

Domain Information

InterPro Annotations

Accession Description
IPR005067 Fatty acid desaturase, type 2
IPR009078 Ferritin-like superfamily
IPR012348 Ribonucleotide reductase-related
IPR005803 Stearoyl-ACP desaturase, conserved site

UniProt Annotations

Entry Information

Gene Name
acyl-[acyl-carrier-protein] desaturase
Protein Entry
STAD7_ARATH
UniProt ID
O22832
Species
Arabidopsis

Comments

Comment Type Description
Catalytic Activity Stearoyl-[acyl-carrier-protein] + reduced acceptor + O(2) = oleoyl-[acyl-carrier-protein] + acceptor + 2 H(2)O.
Function Converts stearoyl-ACP to oleoyl-ACP by introduction of a cis double bond between carbons Delta(9) and Delta(10) of the acyl chain.
Similarity Belongs to the fatty acid desaturase family.
Subunit Homodimer.

Identical and Related Proteins

Unique RefSeq proteins for LMP009773 (as displayed in Record Overview)

Protein GI Database Accession Length Protein Name
15224342 RefSeq NP_181899 401 acyl-[acyl-carrier-protein] desaturase
30689469 RefSeq NP_850400 401 acyl-[acyl-carrier-protein] desaturase

Identical Sequences to LMP009773 proteins

Reference Database Accession Length Protein Name
GI:15224342 EMBL CAW56216.1 401 unnamed protein product [Arabidopsis thaliana]
GI:30689469 EMBL CAW56221.1 401 unnamed protein product [Arabidopsis thaliana]
GI:15224342 EMBL CBC31053.1 401 unnamed protein product [Arabidopsis thaliana]
GI:30689469 EMBL CBC31063.1 401 unnamed protein product [Arabidopsis thaliana]
GI:15224342 GenBank ACW92196.1 401 Sequence 10613 from patent US 7569389
GI:15224342 GenBank ACW98710.1 401 Sequence 19452 from patent US 7569389
GI:15224342 GenBank ADT60236.1 401 Sequence 1362 from patent US 7847156
GI:30689469 GenBank AEC10310.1 401 acyl-[acyl-carrier-protein] desaturase [Arabidopsis thaliana]
GI:15224342 GenBank AEC10311.1 401 acyl-[acyl-carrier-protein] desaturase [Arabidopsis thaliana]

Related Sequences to LMP009773 proteins

Reference Database Accession Length Protein Name
GI:30689469 EMBL CAW56216.1 401 unnamed protein product [Arabidopsis thaliana]
GI:15224342 EMBL CAW56221.1 401 unnamed protein product [Arabidopsis thaliana]
GI:15224342 EMBL CAW56266.1 401 unnamed protein product [Arabidopsis thaliana]
GI:30689469 EMBL CBC31053.1 401 unnamed protein product [Arabidopsis thaliana]
GI:15224342 EMBL CBC31063.1 401 unnamed protein product [Arabidopsis thaliana]
GI:15224342 EMBL CBC31149.1 401 unnamed protein product [Arabidopsis thaliana]
GI:15224342 GenBank AAK82496.1 401 At2g43710/F18O19.18 [Arabidopsis thaliana]
GI:30689469 GenBank AAK85232.1 401 stearoyl ACP desaturase [Arabidopsis thaliana]
GI:15224342 GenBank AAM16170.1 401 At2g43710/F18O19.18 [Arabidopsis thaliana]
GI:30689469 GenBank ACW92196.1 401 Sequence 10613 from patent US 7569389
GI:30689469 RefSeq NP_181899.1 401 acyl-[acyl-carrier-protein] desaturase [Arabidopsis thaliana]
GI:30689469 SwissProt O22832.1 401 RecName: Full=Acyl-[acyl-carrier-protein] desaturase 7, chloroplastic; AltName: Full=Protein FATTY ACID BIOSYNTHESIS 2; AltName: Full=Protein SUPPRESSOR OF SA INSENSITIVITY 2; Short=AtSSI2; AltName: Full=Stearoyl-ACP desaturase 7; Flags: Precursor [Arabidopsis thaliana]