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PMFBP1 | Polyamine-modulated factor 1-binding protein 1; Required for normal spermatogenesis. It functions as a scaffold protein that attaches the sperm head-tail connecting piece to the nuclear envelope, thus maintaining sperm head and tail integrity. May also be involved in the general organization of cellular cytoskeleton (By similarity). (1007 aa) | ||||
SUN5 | SUN domain-containing protein 5; Plays an essential role in anchoring sperm head to the tail. Is responsible for the attachment of the coupling apparatus to the sperm nuclear envelope. (379 aa) |