Aliases for SPAG1 Gene
External Ids for SPAG1 Gene
Previous GeneCards Identifiers for SPAG1 Gene
The correlation of anti-sperm antibodies with cases of unexplained infertility implicates a role for these antibodies in blocking fertilization. Improved diagnosis and treatment of immunologic infertility, as well as identification of proteins for targeted contraception, are dependent on the identification and characterization of relevant sperm antigens. The protein expressed by this gene is recognized by anti-sperm agglutinating antibodies from an infertile woman. Furthermore, immunization of female rats with the recombinant human protein reduced fertility. This protein localizes to the plasma membrane of germ cells in the testis and to the post-acrosomal plasma membrane of mature spermatozoa. Recombinant polypeptide binds GTP and exhibits GTPase activity. Thus, this protein may regulate GTP signal transduction pathways involved in spermatogenesis and fertilization. Two transcript variants of this gene encode the same protein. [provided by RefSeq, Jul 2008]
GeneCards Summary for SPAG1 Gene
SPAG1 (Sperm Associated Antigen 1) is a Protein Coding gene. Diseases associated with SPAG1 include ciliary dyskinesia, primary, 28 and kcnt1-related nocturnal frontal lobe epilepsy, autosomal dominant. GO annotations related to this gene include GTP binding and hydrolase activity. An important paralog of this gene is STIP1.
UniProtKB/Swiss-Prot for SPAG1 Gene
May play a role in the cytoplasmic assembly of the ciliary dynein arms (By similarity). May play a role in fertilization. Binds GTP and has GTPase activity.