This is definitely not normal and as its on both the JPG (I assume from the camera) and the RAW image, its sensor related. I assume when you shoot portrait rather than landscape you'll see the line running vertically.
This is the sort of thing I've seen on some imaging systems (gamma ray based) with corroded contacts. A similar thing occurs on printers with either dirty heads or poor contacts into the heads (corrosion etc).
Has the camera suffered a large jolt or been in a high humidity environment? Either of those could increase the resistance in a contact and render one of the matrix lines faulty (don't forget the Bayer sensor is mixing green with red and blue sensitive sensors - so you've probably lost some of the blue data in that matrix line by the look of it).
My suggestion is have the system checked out by a camera service tech.
Good luck with it and let us know what happens....