Protein
Hyaluronidase PH-20
Organism
Oryctolagus cuniculus
Function
Involved in sperm-egg adhesion. Upon fertilization sperm must first penetrate a layer of cumulus cells that surrounds the egg before reaching the zona pellucida. The cumulus cells are embedded in a matrix containing hyaluronic acid which is formed prior to ovulation. This protein aids in penetrating the layer of cumulus cells by digesting hyaluronic acid.
Similarity
Belongs to the glycosyl hydrolase 56 family.
Sequence
MGVLKFKHIFFGSAVELSGVFQIVFIFLLIPCCLTANFRAPPVIPNVPFLWAWNAPTEFCLGKSGEPLDMSLFSLFGSPRKNKTGQGITIFYVDRLGYYPYIDPHTGAIVHGRIPQLGPLQQHLTKLRQEILYYMPKDNVGLAVIDWEEWLPTWLRNWKPKDIYRIKSIELVKSQHPQYNHSYATEKAKRDFEKAGKDFMEETLKLGRLLRPNHLWGYYLFPDCYNHHYDKPNLYKGSCFDIEKKRNDDLSWLWKESTALFPSVYLTSRARSATALSKLYVVRNRVHEAIRVSKIPDDKSPLPNFVYTRLVFTDQIFQFLSHHDLVYTIGEIVALGASGIVVWGSQSLARSMKSCLHLDNYMKTILNPYLINVTLAAKMCNQVLCQEQGVCTRKNWNPNDYLHLNPGNFAIQLGSNGTYKVDGKPTLTDLEQFSKNFQCSCYTNLNCKERTDMNNVRTVNVCAVENVCIDTNVGPQAVTYAPKEKKDVAHILSNTTSINSSTTMSLPFPRKHVSGCLLVLCMYSQYLNICYRLVAIGIQHGYYLK