Binder of sperm protein homolog 1 (Bsph1)

Binds sperm in vitro and promotes sperm capacitation (PubMed:22539676, PubMed:24307707). Especially promotes capacitation induced by high density lipoproteins (HDLs) (PubMed:25602034).

Also binds heparin, phospholipid liposomes, and weakly to gelatin (PubMed:22539676). Doesn't bind chondroitin sulfate B (PubMed:22539676).