You DLM flight will arrive at domestic. Your luggage should be checked all the way through and your boarding pass is normally issued at origin as well. You have to proceed from a terminal to the other (a short 10 min walk). Allow another 5 to 10 minutes to go through immigration. And here you are!
The only risk is about delay on the domestic flight. TK domestic is not very reliable in terms of schedule. But since you fly on a single carrier/ticket number, they're fully responsible of taking good care of you till the final destination.