FAP Human

Fibroblast Activation Protein Alpha Human Recombinant
Cat. No.
BT22603
Source

Sf9, Baculovirus cells.

Synonyms

Prolyl endopeptidase FAP, 170 kDa melanoma membrane-bound gelatinase, Dipeptidyl peptidase FAP, Fibroblast activation protein alpha, FAPalpha, Gelatine degradation protease FAP, Integral membrane serine protease, Post-proline cleaving enzyme, Serine integral membrane protease, Surface-expressed protease, Seprase, SIMP,  FAP

Appearance
Sterile Filtered colorless solution.
Purity

Greater than 90.0% as determined by SDS-PAGE.

Usage
THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

FAP Human produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 744 amino acids (26-760aa) and having a molecular mass of 86.1 kDa.
FAP is fused to a 6 amino acid His tag at C-terminus and purified by proprietary chromatographic techniques.

Product Specs

Introduction
DPP4, also known as adenosine deaminase complexing protein-2 and T-cell activation antigen CD26, is a serine exopeptidase found on the surface of most cells. This complex enzyme acts as an intrinsic membrane glycoprotein, cleaving X-proline dipeptides from the N-terminus of polypeptides. DPP4 is involved in various cellular processes, including t-cell activation, intracellular signal transduction, apoptosis, and tumor biology. It binds specifically to at least 63 substrates, such as growth factors, chemokines, and neuropeptides. Additionally, DPP4 plays a crucial role in glucose metabolism by cleaving incretins like glucose-dependent insulinotropic polypeptide (GIP) and GLP-1.
Description
FAP Human, produced in Sf9 Baculovirus cells, is a single, glycosylated polypeptide chain consisting of 744 amino acids (26-760aa). It has a molecular mass of 86.1 kDa. This protein is fused to a 6 amino acid His tag at the C-terminus and purified using proprietary chromatographic techniques.
Physical Appearance
A clear, colorless solution that has been sterilized by filtration.
Formulation
The FAP solution is provided at a concentration of 0.25mg/ml and contains 20% Glycerol and Phosphate-Buffered Saline (pH 7.4).
Stability
For short-term storage (up to 4 weeks), the solution can be stored at 4°C. For longer periods, it should be stored frozen at -20°C. Adding a carrier protein such as 0.1% HSA or BSA is recommended for long-term storage. Avoid repeated freezing and thawing.
Purity
The purity of FAP Human is greater than 90.0%, as determined by SDS-PAGE analysis.
Biological Activity
The specific activity of FAP Human is greater than 5,000 pmol/min/ug. This is defined as the amount of enzyme required to hydrolyze 1.0 pmole of ZGP-AMC per minute at a pH of 7.5 and a temperature of 37°C.
Synonyms

Prolyl endopeptidase FAP, 170 kDa melanoma membrane-bound gelatinase, Dipeptidyl peptidase FAP, Fibroblast activation protein alpha, FAPalpha, Gelatine degradation protease FAP, Integral membrane serine protease, Post-proline cleaving enzyme, Serine integral membrane protease, Surface-expressed protease, Seprase, SIMP,  FAP

Source

Sf9, Baculovirus cells.

Amino Acid Sequence

ADPLRPSRVH NSEENTMRAL TLKDILNGTF SYKTFFPNWI SGQEYLHQSA DNNIVLYNIE TGQSYTILSN RTMKSVNASN YGLSPDRQFV YLESDYSKLW RYSYTATYYI YDLSNGEFVR GNELPRPIQY LCWSPVGSKL AYVYQNNIYL KQRPGDPPFQ ITFNGRENKI FNGIPDWVYE EEMLATKYAL WWSPNGKFLA YAEFNDTDIP VIAYSYYGDE QYPRTINIPY PKAGAKNPVV RIFIIDTTYP AYVGPQEVPV PAMIASSDYY FSWLTWVTDE RVCLQWLKRV QNVSVLSICD FREDWQTWDC PKTQEHIEES RTGWAGGFFV STPVFSYDAI SYYKIFSDKD GYKHIHYIKD TVENAIQITS GKWEAINIFR VTQDSLFYSS NEFEEYPGRR NIYRISIGSY PPSKKCVTCH LRKERCQYYT ASFSDYAKYY ALVCYGPGIP ISTLHDGRTD QEIKILEENK ELENALKNIQ LPKEEIKKLE VDEITLWYKM ILPPQFDRSK KYPLLIQVYG GPCSQSVRSV FAVNWISYLA SKEGMVIALV DGRGTAFQGD KLLYAVYRKL GVYEVEDQIT AVRKFIEMGF IDEKRIAIWG WSYGGYVSSL ALASGTGLFK CGIAVAPVSS WEYYASVYTE RFMGLPTKDD NLEHYKNSTV MARAEYFRNV DYLLIHGTAD DNVHFQNSAQ IAKALVNAQV DFQAMWYSDQ NHGLSGLSTN HLYTHMTHFL KQCFSLSDHH HHHH

Product Science Overview

Discovery and Nomenclature

FAP was first identified in the mid-1980s by Rettig et al. while studying cell surface antigens to characterize activated fibroblasts. They discovered the F19 antigen on epithelial cancer cells, soft tissue sarcomas, granulation tissue of wound healing, and some fetal mesenchymal fibroblasts, naming it “FAP” due to its strong expression on activated fibroblasts . Concurrently, Aoyama and Chen identified a dimeric 170 kDa gelatinase at the invasive front of the human melanoma cell line LOX, which they named "seprase" . Subsequent molecular cloning and protein sequence analysis confirmed that FAP and seprase were identical .

Biological Properties

FAP is almost undetectable in normal tissues but is significantly expressed in various pathological conditions, including fibrosis, arthritis, and cancer . It has extensive endonuclease activity and plays a crucial role in degrading the extracellular matrix (ECM), promoting tumor growth, invasion, metastasis, and immunosuppression .

Recombinant Human FAP

Recombinant human FAP is produced using baculovirus expression systems in Spodoptera frugiperda (Sf21) cells. It is typically supplied as a carrier-free, highly purified protein with a molecular mass of approximately 86 kDa . The recombinant protein is used in various research applications, including studying its enzymatic activities, nonenzymatic functions, and potential as a therapeutic target .

Clinical Significance

Elevated levels of FAP are associated with worse clinical outcomes in a wide range of cancers . Its stable expression in cancer-associated fibroblasts (CAFs) makes it a promising target for therapeutic interventions aimed at managing different inflammatory and oncologic conditions .

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