The domain within your query sequence starts at position 1 and ends at position 53; the E-value for the 4b2t domain shown below is 2e-29.

MMPTPVILLKEGTDSSQGIPQLVSNISACQVIAEAVRTTLGPRGMDKLIVDGR

This is a PDB domain - please see the PDBSUM entry of 4b2t for further annotation