SPAG6

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 antibodies from an infertile man. This protein localizes to the tail of permeabilized human sperm and contains eight contiguous armadillo repeats, a motif known to mediate protein-protein interactions. Studies in mice suggest that this protein is involved in sperm flagellar motility and maintenance of the structural integrity of mature sperm. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2011]

Description

Sperm associated antigen 6

Tissue specificity

Tissue enhanced (brain, choroid plexus, fallopian tube, testis)

Predicted location

Intracellular

Protein family

Mapped to neXtProt
Mapped to UniProt SWISS-PROT
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Protein evidence (Kim et al 2014)

Chromosome

10 (22345445 - 22454224)

Ensembl ID

ENSG00000077327  (ver. 103.38)

Orthologs

-

UniProt

O75602

neXtProt

NX_O75602

Human splice variants

Protein structure