The Kan Variation, also known as the Paulsen Variation, is initiated with 4...a6. Black can transpose to the Taimanov with ...Nc6 on move 5. On the other hand he can stay in the Kan, playing for positions with possibly more dynamic potential. The Queen will show herself on c7 to prevent any e5 mischief.
As Black you will not develop a minor piece in the first 5 moves! And yet you are absolutely fine. Every move is purposeful. You can play for a specific structure every time no matter what White chooses to do.
You can get a typical Scheveningen structure with the usual ...a6 and ...b5 on the Queenside. Your Bishops go to e7 and b7, Knights to d7 and f6.
The heavies will control the c-file. As White you will be playing for a Kingside attack. The game will likely pivot on the outcome of this attack. If the Black King is not mated or significant damage is not sustained preventing this, then Black's better pawn structure often stands to him in the long run.