The domain within your query sequence starts at position 47 and ends at position 379; the E-value for the ANF_receptor domain shown below is 1.7e-51.

GMVQFSTSEFRLTPHIDNLEVANSFAVTNAFCSQFSRGVYAIFGFYDKKSVNTITSFCGT
LHVSFITPSFPTDGTHPFVIQMRPDLKGALLSLIEYYQWDKFAYLYDSDRGLSTLQAVLD
SAAEKKWQVTAINVGNINNDKKDETYRSLFQDLELKKERRVILDCERDKVNDIVDQVITI
GKHVKGYHYIIANLGFTDGDLLKIQFGGANVSGFQIVDYDDSLVSKFIERWSTLEEKEYP
GAHTATIKYTSALTYDAVQVMTEAFRNLRKQRIEISRRGNAGDCLANPAVPWGQGVEIER
ALKQVQVEGLSGNIKFDQNGKRINYTINIMELK

ANF_receptor

ANF_receptor
PFAM accession number:PF01094
Interpro abstract (IPR001828): This describes a ligand binding domain and includes extracellular ligand binding domains of a wide range of receptors, as well as the bacterial amino acid binding proteins of known structure [(PUBMED:8011339)].

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