Recombinant Human GCDFP 15 protein (His tag)

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

GCDFP-15 also known as gross cystic disease fluid protein 15 is a glycoprotein with a molecular weight of approximately 15 kDa. It is commonly expressed in apocrine glands particularly in breast tissue. Immunohistochemical studies show that GCDFP-15 is a marker for breast apocrine metaplasia and is frequently used in identifying apocrine carcinoma. The presence of GCDFP-15 in other sites like salivary glands suggests its broader role within glandular tissues.

Biological function summary

GCDFP-15 functions as a secretory protein involved in the regulation of fluid composition in ducts. It is not known to be part of a larger complex but acts independently. This protein plays a role in stabilizing the microenvironment of ductal secretions which assists in the preservation of ductal lining and the maintenance of tissue integrity. The modulation of fluid content by GCDFP-15 is essential in maintaining the function of glandular tissues.

Pathways

GCDFP-15 is integral to lipid metabolism pathways and may indirectly influence signal transduction. It shows interaction with other proteins like prolactin and fatty acid-binding protein suggesting a broader role in lipid-related biological processes. The involvement of GCDFP-15 in these pathways indicates its contribution to the regulation of metabolic homeostasis within glandular tissues.

GCDFP-15 has notable significance in breast cancer particularly in differentiating apocrine-type carcinoma from other subtypes. The expression of GCDFP-15 is considered a biomarker in breast pathology for diagnostic purposes. In addition its role in salivary gland disorders is under investigation given its expression in the ducts of salivary glands. The protein's relationship with markers like mammaglobin further highlights its clinical relevance in distinguishing between glandular-related pathologies.