The domain within your query sequence starts at position 38 and ends at position 766; the E-value for the CATSPERD domain shown below is < 1e-12.

QGDPLFYAFPNTFVLKNVCKADISVYLGQKVFLTIDNFESSLLPLTVPKSLAVGVPSITS
AHFVSGSLVLFVISGKGYSYDYYENTWRKLEGISEPVSHISGDVCCFKGSFCLELSNNLF
AYLRGGQIPGTNIYFSDNGGFSFQLMNTDKLSHLTGTLGGIFHLHSMSQVGVLMVENNLG
TFHYMEYPLNHSMGIAFSYKNLLEVIMKPYQRGFMVLWNQKSILVSSNSGQIVEHVRLID
QKIFTDLDVEHANINIYSVASNAYELAFLVAEDHLYYGSQSYMGTYVIKLPHQPLWSTHT
SIYFEDIGILQVLTPVADPHFAAYDFDKCTVNVQSSLMDEKLALQPCNVELLESTMINTM
FTIDMNSKLKLSALMIPRKGENPTPLVMVSNPHALGFKANLNEFGNTFDGNSKYKLDIEL
KQQHHWGNSDFNFTASIKRHAISSVTVDIADKTLSCVDLKPLSTLISVGCDMTKKIVVQN
KISACTMGILNPVQLQKNYTYTIEKEAYDPINHNGEAQDDLIVFYEYKDLGCPRLVYYDK
PWKPVVELWKNGIVEEIMNAEYVISEINGLVTYSYSLTAATANCRSQPQNWSTFESDIEN
EEPFLWNRENYVSCHEDNKDNPLLWPNVEYQVLGGQTNNKIIFGQRNGIYTFHLSVVDPY
YSYCNLNTIFSVYVHGALPVTKFQPLLTILLMVTTTLLTAWLAYAIPKQLRSEKGQRLLG
FCYQILQLC

CATSPERD

CATSPERD
PFAM accession number:PF15020
Interpro abstract (IPR028751):

CATSPER (cationic channel of sperm) is a complex ion channel that mediates Ca2+ entry in sperm flagellum and is required for sperm hyperactivation and male fertility [ (PUBMED:11595941) ]. The CATSPER channel consists of four CatSper proteins (CatSper1-4) that form a tetramer surrounding a Ca(2+)-selective pore. In addition to the pore-forming proteins, the CATSPER channel contains auxiliary subunits, including CatSperD (cation channel sperm-associated protein subunit delta) [ (PUBMED:21224844) ] and CatSperE. CatSperD is essential for the cation channel function and may play a role in channel assembly or transport.

GO component:CatSper complex (GO:0036128)

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