The domain within your query sequence starts at position 169 and ends at position 551; the E-value for the LMF1 domain shown below is 2.3e-142.

HSLGWESQLLETGFLGIFLSPLWTLSRLPKNTPTSQIVLWGFRWLIFRIMLGAGLIKVRG
DKCWLDLTCMDFHYETQPVPNPIAYYLHRSPWWFHRFETLSNHFVELLVPFFLFLGRRMR
ILHGVLQILFQVILIISGNLSFLNWLTIVPSLACFDDAALGFLFPSGPQGLKKQVLEIQR
EDTQRVQPKPRDRGCLVRQVVNISLGILVAWLSVPVVINLLSSRQIMNTSFNPLRIVNTY
GAFGSVTKERTEVILQGTVSPNASAPDAVWEDYEFKCKPGDPWRQPCLISPYHYRLDWLM
WFAAFQTYEQNEWILHLAGKLLAGDSEALALLAVNPFEGRTPPRWIRGEHYRYKFSLPGG
QHATQGKWWIRKRIGPYFPPLRL

LMF1

 LMF1
PFAM accession number:PF06762
Interpro abstract (IPR009613):

This family of transmembrane proteins includes the lipase maturation factors LMF1 and LMF2. Lipoprotein lipase and hepatic lipase require LMF1 to fold into their active states [ (PUBMED:17994020) (PUBMED:19783858) ]. The precise role of LMF1 in lipase folding has yet to be determined [ (PUBMED:20543905) ].

This is a PFAM domain. For full annotation and more information, please see the PFAM entry LMF1