| Tissue Specificity | Expressed in submandibular and sublingual saliva but not in parotid saliva (at protein level). Expressed in saliva, tears, urine and seminal fluid. |
| Function | Human saliva appears to contain several cysteine proteinase inhibitors that are immunologically related to cystatin S but that differ in their specificity due to amino acid sequence differences. Cystatin SN, with a pI of 7.5, is a much better inhibitor of papain and dipeptidyl peptidase I than is cystatin S, although both inhibit ficin equally well. |
| Protein Name | Cystatin-SnCystain-Sa-ICystatin-1Salivary Cystatin-Sa-1 |
| Database Links | |
| Cellular Localisation | Secreted |
| Alternative Protein Names | Cystatin-Sn proteinCystain-Sa-I proteinCystatin-1 proteinSalivary Cystatin-Sa-1 proteinCST1 protein |
Information sourced from Uniprot.org