Human ACE-2 Antibody

Catalog # Availability Size / Price Qty
MAB9335-100
MAB9335-SP
ACE‑2 in HepG2 Human Cell Line.
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Human ACE-2 Antibody Summary

Species Reactivity
Human
Specificity
Detects human ACE-2 in direct ELISAs.
Source
Monoclonal Mouse IgG1 Clone # 1038216
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
Mouse myeloma cell line NS0-derived human ACE-2 protein
Gln18-Ser740
Accession # Q9BYF1
Formulation
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.
Label
Unconjugated

Applications

Recommended Concentration
Sample
Immunohistochemistry
5-25 µg/mL
Immersion fixed paraffin-embedded sections of human kidney
Immunocytochemistry
8-25 µg/mL
Immersion fixed HepG2 human hepatocellular carcinoma cell

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

Immunocytochemistry View Larger

ACE‑2 in HepG2 Human Cell Line. ACE‑2 was detected in immersion fixed HepG2 human hepatocellular carcinoma cell (positive staining) line and MCF‑7 human breast cancer cell line (negative control) using Mouse Anti-Human ACE‑2 Monoclonal Antibody (Catalog # MAB9335) at 8 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; NL007) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. Staining was performed using our protocol for Fluorescent ICC Staining of Non-adherent Cells.

Immunohistochemistry View Larger

ACE‑2 in Human Kidney. ACE‑2 was detected in immersion fixed paraffin-embedded sections of human kidney using Mouse Anti-Human ACE‑2 Monoclonal Antibody (Catalog # MAB9335) 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 cell membrane in convoluted tubules. Staining was performed using our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS.
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Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store 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: ACE-2

Angiotensin I Converting Enzyme (ACE-2), also called ACEH (ACE homologue), is a dimeric, zinc-dependent metalloprotease of the ACE family that also includes somatic and germinal ACE (1, 2). ACE-2 mRNA is found at high levels in heart, testis, and kidney and at lower levels in a wide variety of tissues (1, 3). ACE-2 is the SARS-CoV and SARS-CoV2 Spike protein receptor in vivo (4-6), functions catalytically as a carboxypeptidase to cleave several substrates including angiotensins I and II, and acts as a partner for B0AT1-family amino acid transporters (1, 2). Through these functions, ACE-2 has been shown to be involved in several diseases including SARS, COVID19, acute lung injury (4, 7), heart disease (8), liver and lung fibrosis (9), inflammatory lung disease (10), and cardiopulmonary disease (11). Full length ACE-2 protein includes an extracellular region composed of a single N-terminal peptidase domain and C-terminal collectrin-like domain (CLD), a transmembrane domain, and a short cytoplasmic tail (12). The N-terminal peptidase region is required for binding to SARS-CoV and SARSCoV2 spike proteins, while the CLD contains a region that promotes dimerization and association with amino acid transporters (2). The peptidase domain contains a long deep cleft that undergoes a large hinge-bending movement at substrate and inhibitor binding (12).  Classical ACE inhibitors such as captopril and lisinopril do not inhibit ACE-2 activity and inhibitors of ACE-2 do not inhibit ACE activity (13).

References
  1. Kuba, K. et al. (2010) Pharmacol. Ther. 128:119.
  2. Yan, et al. (2020) Science 367:1444.
  3. Tipnis, S.R. et al. (2000) J. Biol. Chem. 275:33238.
  4. Kuba, K. et al. (2005) Nature Med. 11:875.
  5. Hoffmann, M. et al. (2020) Cell.181:1.
  6. Wrapp, et al. (2020) Science 367:1260.
  7. Imai, Y. et al. (2005) Nature 436:112.
  8. Huang, L. et al. (2003) J. Biol. Chem. 278:15532.
  9. Schrom, E. et al. (2017) Mol. Therapy Nuc. Acid 7:350.
  10. Jia, H. et al. (2016) Shock. 46:239.
  11. Cole-Jeffrey, C.T. et al. (2015) J. Cadiovasc. Pharmacol. 66:540.
  12. Towler, P. et al. (2004) J. Biol. Chem. 279:17996.
  13. Crackower, M.A. et al. (2002) Nature 417:822.
Long Name
Angiotensin I Converting Enzyme 2
Entrez Gene IDs
59272 (Human); 70008 (Mouse); 302668 (Rat); 100144303 (Porcine); 480847 (Canine); 418623 (Chicken); 102130864 (Cynomolgus Monkey); 554349 (Feline); 101673097 (Ferret); 101823817 (Hamster); 108390919 (Malayan Pangolin)
Alternate Names
ACE2; ACE-2; ACEH; ACEHangiotensin I converting enzyme 2; ACE-related carboxypeptidase; angiotensin I converting enzyme (peptidyl-dipeptidase A) 2; angiotensin-converting enzyme 2; Angiotensin-converting enzyme homolog; DKFZp434A014; EC 3.4.17; EC 3.4.17.23; Metalloprotease MPROT15

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