Catalysis of the reaction: a very-long-chain 2,3-saturated fatty acyl-CoA + H+ + oxidized [electron-transfer flavoprotein] = a very-long-chain (2E)-enoyl-CoA + reduced [electron-transfer flavoprotein]. A very long-chain fatty acid is a fatty acid which has a chain length greater than C22.
Source:RHEA:19181