| First Author | Li SH | Year | 2006 |
| Journal | Reproduction | Volume | 132 |
| Issue | 3 | Pages | 493-500 |
| PubMed ID | 16940290 | Mgi Jnum | J:112006 |
| Mgi Id | MGI:3655343 | Doi | 10.1530/rep.1.01183 |
| Citation | Li SH, et al. (2006) SSLP-1, a secreted Ly-6 protein purified from mouse seminal vesicle fluid. Reproduction 132(3):493-500 |
| abstractText | The Ly-6 protein family refers to a group of glycophosphatidyl inositol-anchored membrane proteins with ten conserved cysteines. They are thought to be involved in cellular adhesion and signaling. Recently, a subfamily of secreted Ly-6 proteins has been identified. In the present study, we report a secreted Ly-6 protein, secreted seminal vesicle Ly-6 protein 1 (SSLP-1) purified from mouse seminal vesicles using a series of steps including ion-exchange chromatography on a diethylaminoethyl (DEAE)-Sephacel column, gel filtration on a Sephadex G-75 column, and ion-exchange HPLC on a sulfopropyl column. Further analysis demonstrated it to be a novel, previously unnamed, 17 kDa glycoprotein. N-glycosidase F treatment revealed a core protein with a molecular mass of 8720 Da. By Basic Local Alignment Search Tool Protein analysis, we found that SSLP-1 had ten conserved cysteine residues identical with other secreted Ly-6 proteins. The gene Gm191, which is located on chromosome 9, encodes SSLP-1. By Northern blotting with 21 different mouse tissues, we found that Sslp-1 mRNA was predominantly expressed in the seminal vesicle. Immunohistochemistry revealed SSLP-1 protein in the luminal fluid and mucosal epithelium of the seminal vesicles. The amount of Sslp-1 mRNA and SSLP-1 protein in the seminal vesicle was regulated by testosterone and correlated with the stage of animal maturation. The tissue-specific expression pattern suggests that SSLP-1 may play a physiological role in male mouse reproduction. |
