The domain within your query sequence starts at position 54 and ends at position 196; the E-value for the Troponin domain shown below is 2e-42.

KRQNKDLMELQALIDSHFEARKKEEEELIALKERIEKRRAERAEQQRIRAEKERERQNRL
AEEKARREEEDAKRRAEDDMKKKKALSSMGANYSSYLAKADQKRGKKQTAREMKKKILAE
RRKPLNIDHLSDDKLRDKAKELW

Troponin

Troponin
PFAM accession number:PF00992
Interpro abstract (IPR001978): The troponin (Tn) complex regulates Ca2+ induced muscle contraction. Tn contains three subunits, Ca2+ binding (TnC), inhibitory (TnI), and tropomyosin binding (TnT). This family includes troponin T and troponin I. Troponin I binds to actin and troponin T binds to tropomyosin [(PUBMED:3102969), (PUBMED:7852318), (PUBMED:7601340)].
GO component:troponin complex (GO:0005861)

This is a PFAM domain. For full annotation and more information, please see the PFAM entry Troponin