Catalyzes the conversion of the cyclic tetrahydrodipicolinate (THDP) into the acyclic N-succinyl-L-2-amino-6-oxopimelate using succinyl-CoA. (S)-2,3,4,5-tetrahydrodipicolinate + H2O + succinyl-CoA = (S)-2-succinylamino-6-oxoheptanedioate + CoA Amino-acid biosynthesis; L-lysine biosynthesis via DAP pathway; LL-2,6-diaminopimelate from (S)-tetrahydrodipicolinate (succinylase route): step 1/3. Homotrimer. Belongs to the type 2 tetrahydrodipicolinate N-succinyltransferase family. Extended N-terminus.