| ID | Sequence | Length | GC content |
|---|---|---|---|
| AUUGAACAAAUCUCCCCUGUGGACUGUCAUUUAAAAGCACAAAUACACU… | 1918 nt | 0.3738 | |
| AGUUUCUUUGCAGCUACCAGGACAGAGCUUGGUGAGAUAAUUCUUUUAU… | 1899 nt | 0.3718 | |
| AUUGAACAAAUCUCCCCUGUGGACUGUCAUUUAAAAGCACAAAUACACU… | 1829 nt | 0.3707 |
Fertilization consists of a sequence of specific cell-cell interactions culminating in the fusion of the sperm and egg plasma membranes. Recognition, binding, and fusion occur through the interaction of complementary molecules that are localized to specific domains of the sperm and egg plasma membranes. In the sperm, the postacrosomal region or equatorial segment is involved in sperm-egg plasma membrane fusion. The protein encoded by this gene is a member of the cysteine-rich secretory protein (CRISP) family. It is expressed in the epididymis, is secreted into the epididymal lumen, and binds to the postacrosomal region of the sperm head, where it plays a role in sperm-egg fusion. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2011]
A study in humans demonstrated that the CRISP1 exhibited a Gini impurity score of 0, being present in all pure seminal fluid samples and in mixtures containing semen while being absent in mixtures without semen, confirming its role as a highly discriminatory protein for seminal fluid classification in forensic proteomic workflows [Shehata et al. DOI:10.1016/j.fsigen.2025.103343].