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Seminal vesicle autoantigen (SVA) This family consists of seminal vesicle autoantigen and prolactin-inducible (PIP) proteins. Seminal vesicle autoantigen (SVA) is specifically present in the seminal plasma of mice. This 19-kDa secretory glycoprotein suppresses the motility of spermatozoa by interacting with phospholipid. PIP, has several known functions. In saliva, this protein plays a role in host defence by binding to microorganizms such as Streptococcus. PIP is an aspartyl proteinase and it acts as a factor capable of suppressing T-cell apoptosis through its interaction with CD4. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",