Protein
Pregnancy-specific glycoprotein 22
Function
May have an angiogenic function during early placental development. Binds to cell-surface heparan sulfate proteoglycans (HSPGs), and stimulates secretion of the proangiogenic factors VEGFA and TGFB from uterine dendritic cells and natural killer cells. Also induces endothelial tube formation in vitro.
Similarity
Belongs to the immunoglobulin superfamily. CEA family.
Sequence
MEVSSELLSNGWTSWQRVLLTASLLTCWLLPITAGVTIESVPPKLVEGENVLLRVDNLPENLRVFVWYRGVTDMSLGIALYSLDYSTSVTGPKHSGRETLYRNGSLWIQNVTREDTGYYTLQTISKNGKVVSNTSIFLQVNSSLFICGRPSPPALLTIESVPASVAEGGSVLLLVHSLPDNLQSLLWYKGLTVFNKVEIARHRTVKNSSEMGPAYSGREIVYSNGSLLLQNVTWEDTGFYTLQIVNRYWKMELAHIYLQVDTSLSSCCDDFNSVQLRINPVPPHAAEGERVLLQVHNLPEDVQTFLWYKGVYSTQSFKITEYSIVTESLINGYAHSGREILFINGSLLLQDVTEKDSGFYTLVTIDSNVKVETAHVQVNVNKLVTQPVMRVTDSTVRIQGSVVFTCFSDNTGVSIRWLFNNQNLQLTERMTLSPSKCQLRIHTVRKEDAGEYQCEAFNPVSSKTSLPVRLTVMNE