FAP Recombinant Rabbit Monoclonal Antibody (IRS289RB)

UNIPROT #

Q12884

PROTEIN NAME

FAP

SYNONYMS

170 kDa melanoma membrane bound gelatinase antibody;170 kDa melanoma membrane-bound gelatinase antibody;DPPIV antibody;FAP antibody;FAPA antibody;Fibroblast activation protein alpha antibody;Integral membrane serine protease antibody;SEPR_HUMAN antibody;Seprase antibody

SEQUENCE SIMILARITIES

Belongs to the peptidase S9B family.

TISSUE SPECIFICITY

Expressed in adipose tissue. Expressed in the dermal fibroblasts in the fetal skin. Expressed in the granulation tissue of healing wounds and on reactive stromal fibroblast in epithelial cancers. Expressed in activated fibroblast-like synoviocytes from inflamed synovial tissues. Expressed in activated hepatic stellate cells (HSC) and myofibroblasts from cirrhotic liver, but not detected in normal liver. Expressed in glioma cells (at protein level). Expressed in glioblastomas and glioma cells. Isoform 1 and isoform 2 are expressed in melanoma, carcinoma and fibroblast cell lines.

POST-TRANSLATIONAL MODIFICATION

N-glycosylated.; The N-terminus may be blocked.

SUBCELLULAR LOCATION

Cell membrane. Cell surface.

FUNCTION

FAP (fibroblast activation protein) is a cell surface glycoprotein and serine protease that is expressed primarily in fetal mesenchymal tissues and epithelial cancer fibroblasts. In cancer, FAP functions to promote cellular proliferation. In embryonic development, FAP functions to remodel developing tissues. FAP acts as an integral membrane gelatinase composed of N-glycosylated proteolytically inactive subunits. FAP expression on chondrocyte membranes is upregulated by the combination of the cytokines IL-1 and OSM and has been shown to increase in osteoarthritic patients. This expression is co-localized with MMP-1and MMP-13 as well as CD44 (variants v3 and v7/8). Mice that lack all copies of the FAP gene have been found to be fertile and to have developmental defects or change in cancer susceptibility.