a (9Z)-octadecenoyl-containing glycerolipid + 2 reduced [2Fe-2S]-[ferredoxin] + O2 + 2 H(+) = a (9Z,12Z)-octadecadienoyl-containing glycerolipid + 2 oxidized [2Fe-2S]-[ferredoxin] + 2 H2O
a (9z)-octadecenoyl-containing glycerolipid + 2 reduced [2fe-2s]-[ferredoxin] + o2 + 2 h(+) = a (9z,12z)-octadecadienoyl-containing glycerolipid + 2 oxidized [2fe-2s]-[ferredoxin] + 2 h2o
"acyl-lipid (n+3)-(Z)-desaturase (ferredoxin)"
"acyl-lipid (n+3)-(z)-desaturase (ferredoxin)"