Recombinant Human ACE-2 Protein, CF Summary
In addition to ACE-2, shop Spike Proteins and other Coronavirus proteins here:
Product Specifications
Gln18-Ser740, with a C-terminal 10-His tag
Analysis
Product Datasheets
Carrier Free
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
933-ZN
Formulation | Supplied as a 0.2 μm filtered solution in Tris, NaCl, ZnCl2 and Glycerol. |
Shipping | The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below. |
Stability & Storage: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Data Images


Recombinant SARS-CoV-2 Spike RBD Fc Chimera Protein (10499-CV) was immobilized on a Biacore Sensor Chip CM5, and binding to recombinant human ACE-2 (933-ZN) was measured at a concentration range between 0.73 nM and 46.7 nM. The double-referenced sensorgram was fit to a 1:1 binding model to determine the binding kinetics and affinity, with an affinity constant of Kd=7.037 nM. (Biacore T200).

Recombinant Human ACE-2 His-tag (Catalog # 933-ZN) is measured by its ability to cleave fluorogenic peptide substrate, Mca-YVADAPK(Dnp)-OH (ES007).

1 μg/lane of Recombinant Human ACE-2 Protein (Catalog # 933-ZN) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by silver staining, showing bands at ~106 kDa under reducing conditions.
Reconstitution Calculator
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).
- Kuba, K. et al. (2010) Pharmacol. Ther. 128:119.
- Yan, et al. (2020) Science 367:1444.
- Tipnis, S.R. et al. (2000) J. Biol. Chem. 275:33238.
- Kuba, K. et al. (2005) Nature Med. 11:875.
- Hoffmann, M. et al. (2020) Cell.181:1.
- Wrapp, et al. (2020) Science 367:1260.
- Imai, Y. et al. (2005) Nature 436:112.
- Huang, L. et al. (2003) J. Biol. Chem. 278:15532.
- Schrom, E. et al. (2017) Mol. Therapy Nuc. Acid 7:350.
- Jia, H. et al. (2016) Shock. 46:239.
- Cole-Jeffrey, C.T. et al. (2015) J. Cadiovasc. Pharmacol. 66:540.
- Towler, P. et al. (2004) J. Biol. Chem. 279:17996.
- Crackower, M.A. et al. (2002) Nature 417:822.
Citations for Recombinant Human ACE-2 Protein, CF
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
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Citations: Showing 1 - 10
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High affinity binding of SARS-CoV-2 spike protein enhances ACE2 carboxypeptidase activity
Authors: J Lu, PD Sun
bioRxiv, 2020;0(0):.
Applications: Enzyme Assay -
Plasma and tissue angiotensin-converting enzyme 2 activity and plasma equilibrium concentrations of angiotensin peptides in dogs with heart disease
Authors: É Larouche-L, KA Loughran, MA Oyama, PF Solter, DS Laughlin, MD Sánchez, CA Assenmache, PR Fox, RC Fries
J. Vet. Intern. Med., 2019;0(0):.
Species: Canine
Sample Types: Plasma
Applications: Bioassay -
Plasma and tissue angiotensin-converting enzyme 2 activity and plasma equilibrium concentrations of angiotensin peptides in dogs with heart disease
Authors: É Larouche-L, KA Loughran, MA Oyama, PF Solter, DS Laughlin, MD Sánchez, CA Assenmache, PR Fox, RC Fries
J. Vet. Intern. Med., 2019;0(0):.
Species: Canine
Sample Types: Plasma
Applications: Bioassay -
Obesity is Associated with Higher Blood Pressure and Higher Levels of Angiotensin II but Lower Angiotensin-(1-7) in Adolescents Born Preterm
Authors: AM South, PA Nixon, MC Chappell, DI Diz, GB Russell, HA Shaltout, TM O'Shea, LK Washburn
J. Pediatr., 2018;0(0):.
Species: Human
Sample Types: Urine
Applications: Bioassay -
Angiotensin-converting enzyme 2 is reduced in Alzheimer's disease in association with increasing amyloid-? and tau pathology
Alzheimers Res Ther, 2016;8(1):50.
Species: Human
Sample Types: Fluorogenic Peptide Substrate
Applications: Enzyme Assay -
TMPRSS2 and ADAM17 cleave ACE2 differentially and only proteolysis by TMPRSS2 augments entry driven by the severe acute respiratory syndrome coronavirus spike protein.
Authors: Heurich A, Hofmann-Winkler H, Gierer S, Liepold T, Jahn O, Pohlmann S
J Virol, 2014;88(2):1293-307.
Species: Human
Sample Types: Protein
Applications: Bioassay -
A single asparagine-linked glycosylation site of the severe acute respiratory syndrome coronavirus spike glycoprotein facilitates inhibition by mannose-binding lectin through multiple mechanisms.
Authors: Zhou Y, Lu K, Pfefferle S, Bertram S, Glowacka I, Drosten C, Pohlmann S, Simmons G
J. Virol., 2011;84(17):8753-64.
Species: Virus
Sample Types: Virus
Applications: Binding Assay -
Detection of soluble angiotensin-converting enzyme 2 in heart failure: insights into the endogenous counter-regulatory pathway of the renin-angiotensin-aldosterone system.
Authors: Epelman S, Tang WH, Chen SY, Van Lente F, Francis GS, Sen S
J. Am. Coll. Cardiol., 2008;52(9):750-4.
Species: N/A
Sample Types: Fluorogenic Peptide Substrate
Applications: Enzyme Assay -
Interferon-gamma and interleukin-4 downregulate expression of the SARS coronavirus receptor ACE2 in Vero E6 cells.
Authors: de Lang A, Osterhaus AD, Haagmans BL
Virology, 2006;353(2):474-81.
Species: Primate - Chlorocebus pygerythrus (Vervet Monkey)
Sample Types: Whole Cells
Applications: Bioassay -
Furin cleavage of the SARS coronavirus spike glycoprotein enhances cell-cell fusion but does not affect virion entry.
Authors: Follis KE, York J, Nunberg JH
Virology, 2006;350(2):358-69.
Species: Human
Sample Types: Whole Cells
Applications: Flow Cytometry -
Angiotensin-converting enzyme 2 protects from severe acute lung failure.
Authors: Imai Y, Kuba K, Rao S, Huan Y, Guo F, Guan B, Yang P, Sarao R, Wada T, Leong-Poi H, Crackower MA, Fukamizu A, Hui CC, Hein L, Uhlig S, Slutsky AS, Jiang C, Penninger JM
Nature, 2005;436(7047):112-6.
Species: Mouse
Sample Types: In Vivo
Applications: In Vivo -
Characterization of the receptor-binding domain (RBD) of 2019 novel coronavirus: implication for development of RBD protein as a viral attachment inhibitor and vaccine.
Authors: Tai W, He L, Zhang X, Pu J, Voronin D, Jiang S, Zhou Y, DU L
Cell Mol Immunol, 0;17(6):613-620.
Species: Human
Sample Types: Whole Cells
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