Human TMPRSS9 Antibody

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TMPRSS9 in SARS-CoV-2 infected Human lung.
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Human TMPRSS9 Antibody Summary

Species Reactivity
Detects human TMPRSS9 in direct ELISAs.
Monoclonal Mouse IgG1 Clone # 1042528
Protein A or G purified from hybridoma culture supernatant
E. coli-derived recombinant human TMPRSS9
Accession # Q7Z410
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
5-25 µg/mL
Immersion fixed paraffin-embedded sections of SARS-CoV-2 infected human lung

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

Immunohistochemistry View Larger

TMPRSS9 in SARS-CoV-2 infected Human lung. TMPRSS9 was detected in immersion fixed paraffin-embedded sections of SARS-CoV-2 infected human lung using Mouse Anti-Human TMPRSS9 Monoclonal Antibody (Catalog # MAB5688) at 5 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody (VC001). Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (CTS013). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to immunoreactive profiles scattered throughout the tissue. Staining was performed using our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.

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Preparation and Storage

Reconstitute at 0.5 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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: TMPRSS9

TMPRSS9 (Transmembrane protease, Serine 9; also Polyserine protease 1) is a 116-120 kDa (predicted) member of the TTSP family of membrane-bound serine proteases. It is expressed in fetal tissue, and converts pro-uPA into its active form. Human TMPRSS9 is a 1059 type II transmembrane (TM) protein. It has a 29 aa N-terminal cytoplasmic region and a 1008 aa extracellular domain (ECD) (aa 51-1059). The ECD contains one LDLR region (aa 153-190), followed by three Peptidase S1 domains (aa 203-436, 504-736, and 827-1058), the first two of which are catalytically active. Proteolytic cleavage can generate a soluble 34 kDa Serase 1 (aa 203-503), a 35 kDa Serase 2 (aa 504-826) and an inactive 25 kDa Serase 3 (aa 827-1059). Alternatively, truncated, TM forms of TMPRSS9 such as a 56 kDa TM isotype containing only the Serase 1 domain,  or a 91 kDa (predicted) form containing the Serase 1, 2 and 3 domains may exist. Two potential splice forms are reported. One shows an insertion of 34 aa after Lys90 accompanied by a seven aa substitution for aa 491-1059. A second isoform shows a 34 aa substitution for aa 822-1059. Over aa 190-490, human TMPRSS9 shares 79% aa identity with mouse TMPRSS9.

Long Name
Transmembrane protease, serine 9
Entrez Gene IDs
360200 (Human); 432478 (Mouse); 314636 (Rat)
Alternate Names
EC 3.4.21; EC; Polyserase 1; Polyserase-1; Polyserase-I; Polyserine Protease 1; TMPRSS9; Transmembrane Protease Serine 9; Transmembrane Protease, Serine 9; Transmembrane Serine Protease 9

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Human TMPRSS9 MAb (Clone 1042528)
By Anonymous on 10/23/2022
Application: IHC Sample Tested: Lung tissue Species: Human

Bronchial tissue