CABS1
calcium binding protein, spermatid associated 1
- Ensembl:
- ENSG00000145309
- UniProt:
- Q96KC9
- OMIM:
- 618600
- Synonyms:
- C4ORF35, CLPH, FLJ32897, NYD-SP26
Cilia effects upon perturbation of CABS1
Ciliogenesis screen results (2 screens)
- Wheway et al. 2015 (siRNA) [siRNA]: Ciliogenesis Defect (z=-2.96) PMID:26167766
- Breslow et al. 2018 (CRISPR) [CRISPR]: No Significant Effect PMID:29459680
Ciliopathy associations
- Male Infertility
Subcellular localization
cilia associated gene
Function
The genetic loss of Cabs1 did not affect testicular and epididymal development; however, male mice exhibited significantly impaired sperm tail structure and subfertility. Ultrastructural analysis revealed defects in sperm flagellar differentiation leading to an abnormal annulus and disorganization of the midpiece–principal piece junction, which may explain the high proportion of sperm with a bent tail(PMID: 33440775).
Model organism evidence
Mus musculus (5 references)
The calcium-binding protein spermatid-associated 1 (CABS1) localizes to the principal piece of mature sperm flagella.
Ca2+ binding protein CABS1 is known to maintain structural integrity of mouse sperm flagella during epididymal transit of sperm.