Protein
Omega-3 fatty acid desaturase, chloroplastic
Function
Chloroplast omega-3 fatty acid desaturase introduces the third double bond in the biosynthesis of 16:3 and 18:3 fatty acids, important constituents of plant membranes. It is thought to use ferredoxin as an electron donor and to act on fatty acids esterified to galactolipids, sulfolipids and phosphatidylglycerol.
Similarity
Belongs to the fatty acid desaturase type 1 family.
Sequence
MAAGWVLSECGLRPLPRIYSRPRIGFTSKTTNLLKLRELPDSKSYNLCSSFKVSSWSNSKQSNWALNVAVPVNVSTVSGEDDREREEFNGIVNVDEGKGEFFDAGAPPPFTLADIRAAIPKHCWVKNPWRSMSYVLRDVVVVFGLAAVAAYFNNWVAWPLYWFCQGTMFWALFVLGHDCGHGSFSNNPKLNSVVGHLLHSSILVPYHGWRISHRTHHQNHGHVENDESWHPLSEKIFKSLDNVTKTLRFSLPFPMLAYPFYLWSRSPGKKGSHFHPDSGLFVPKERKDIITSTACWTAMAALLVYLNFSMGPVQMLKLYGIPYWIFVMWLDFVTYLHHHGHEDKLPWYRGKAWSYLRGGLTTLDRDYGWINNIHHDIGTHVIHHLFPQIPHYHLVEATEAAKPVMGKYYREPKKSGPLPLHLLGSLVRSMKEDHYVSDTGDVVYYQKDPKLSGIGGEKTE