(7Z)-hexadecenoyl-CoA + oxidized [electron-transfer flavoprotein] + H(+) => (2E,7Z)-hexadecadienoyl-CoA + reduced [electron-transfer flavoprotein]
(7z)-hexadecenoyl-coa + oxidized [electron-transfer flavoprotein] + h(+) => (2e,7z)-hexadecadienoyl-coa + reduced [electron-transfer flavoprotein]