Human Matriptase/ST14 Catalytic Domain Biotinylated Antibody

Catalog #: BAF3946 Datasheet / COA / SDS

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BAF3946

Detection of Matriptase/ST14 in PC‑3 Human Cell Line by Flow Cytometry.

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Human Matriptase/ST14 Catalytic Domain Biotinylated Antibody Summary

Species Reactivity

Human

Specificity

Detects Matriptase/ST14 Catalytic Domain in Western blots.

Source

Polyclonal Sheep IgG

Purification

Antigen Affinity-purified

Immunogen

E. coli-derived recombinant human Matriptase/ST14 Catalytic Domain
Val615-Val855
Accession # Q9Y5Y6.2

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.

Label

Biotin

Applications

Recommended Concentration

Sample

Western Blot

0.1 µg/mL

Recombinant Human Matriptase/ST14 Catalytic Domain (Catalog # 3946-SE)

Intracellular Staining by Flow Cytometry

2.5 µg/10⁶ cells

See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Intracellular Staining by Flow Cytometry

Detection of Matriptase/ST14 antibody in PC‑3 Human Cell Line antibody by Flow Cytometry.

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Detection of Matriptase/ST14 in PC‑3 Human Cell Line by Flow Cytometry. PC-3 human prostate cancer cell line was stained with Sheep Anti-Human Matriptase/ST14 Catalytic Domain Biotinylated Antigen Affinity-purified Polyclonal Antibody (Catalog # BAF3946, filled histogram) or isotype control antibody (BAF020), followed by Streptavidin-Phycoerythrin (Catalog # F0040). To facilitate intracellular staining, cells were fixed with paraformaldehyde and permeabilized with saponin.

Reconstitution Calculator

Preparation and Storage

Reconstitution

Reconstitute at 0.2 mg/mL in sterile PBS.

Shipping

The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Matriptase/ST14

Human matriptase, encoded by the ST14 (suppression of tumorogenicity 14) gene, is also known as tumor associated differentially expressed gene 15 protein/TADG‑15), epithin, and membrane-type serine protease 1/MT-SP1 (1). Predicted to have a significant role in tumor biology, matriptase may be a novel target for anti-cancer therapy (2). However, expressed in most human epithelia, matriptase is also important in several physiological processes (1). For example, it activates prostasin to initiate a protease cascade that is essential for epidermal differentiation (3), and it converts a single-chain IGFBP-rp1 into the two-chain form (4).

Matriptase is a type II transmembrane serine protease with a complex modular structure (1). The 855 amino acid (aa) sequence of human matriptase consists of a cytoplasmic tail (aa 1-55), a transmembrane domain (aa 56-76), and an extracellular portion (aa 77-855). The latter contains the following domains: SEA (aa 86-201), two CUBs (aa 214-334 and 340-447), four LDLRAs (aa 452-486, 487-523, 524-560, and 566-603), and a serine protease (aa 615-855). The physiological activation of the single-chain zymogen requires the cleavage at the SEA domain within the ER or Golgi, association with HAI-1, which facilitates the transport of the protease to the cell surface, and auto-cleavage at QAR-V(615)VGG (1). The activated matriptase is inhibited by HAI-1, and the resulting HAI-1 complex can be shed from the cell surface (1). R&D Systems rhST14 corresponds to the catalytic domain, and is inhibited effectively by rhHAI-1 and rhHAI-2A (R&D Systems, Catalog # 1048-PI and 1106-PI).

Entrez Gene IDs

6768 (Human); 19143 (Mouse); 114093 (Rat); 102117178 (Cynomolgus Monkey)

Alternate Names

EC 3.4.21; Epithin; HAI; Matriptase; Membrane-type serine protease 1; MTSP1; MT-SP1EC 3.4.21.109; prostamin; PRSS14; Serine protease 14; Serine protease TADG-15; SNC19; SNC19MTSP1; ST14; suppression of tumorigenicity 14 (colon carcinoma); suppression of tumorigenicity 14 (colon carcinoma, matriptase, epithin); suppressor of tumorigenicity 14 protein; TADG15; TADG-15; TMPRSS14; tumor associated differentially expressed gene 15 protein; Tumor-associated differentially-expressed gene 15 protein