The domain within your query sequence starts at position 9 and ends at position 155; the E-value for the 3smt domain shown below is 1e-100.

GKKSRVKTQKSGTGATATVSPKEILNLTSELLQKCSSPAPSPGKEWEEYTQIRALVEKIR
KKQKGLSVTFDGKREDYFPDLMKWASENGASVEGFEMVNFKEEGFGLRATRDIKAEELFL
WVPRKLLMTVESAKNSVLGPLYSQDRI

This is a PDB domain - please see the PDBSUM entry of 3smt for further annotation