About Human Angiotensin-Converting Enzyme 2 (ACE2) Protein

Human Angiotensin-Converting Enzyme 2 (ACE2) is a type I transmembrane glycoprotein that plays a critical role in the renin-angiotensin system (RAS), regulating cardiovascular function, blood pressure homeostasis, inflammation, and tissue protection. ACE2 is widely expressed in numerous tissues including the lung, heart, kidney, intestine, and vascular endothelium. As a zinc-dependent carboxypeptidase, ACE2 converts angiotensin II into angiotensin-(1-7), thereby counterbalancing the pro-inflammatory, vasoconstrictive, and fibrotic effects of angiotensin II and promoting protective physiological responses.

ACE2 has gained significant attention as the primary cellular receptor utilized by SARS-CoV-2 for host-cell entry. The receptor-binding domain (RBD) of the SARS-CoV-2 spike protein specifically recognizes and binds human ACE2, initiating viral attachment and entry into susceptible cells. Because of its essential role in coronavirus infection, ACE2 has become a key target for studies of viral pathogenesis, receptor biology, therapeutic antibody development, soluble receptor engineering, and antiviral drug discovery. Structural studies have demonstrated high-affinity interactions between ACE2 and the SARS-CoV-2 spike protein, making recombinant ACE2 an indispensable research reagent for COVID-19-related investigations.

eEnzyme's recombinant Human ACE2 Protein provides a valuable research tool for studies of receptor-ligand interactions, coronavirus biology, spike protein binding, neutralizing antibody characterization, therapeutic development, and cardiovascular research. The protein is suitable for binding assays, structural biology investigations, inhibitor screening, ELISA development, and studies of ACE2-mediated signaling pathways. Researchers can utilize recombinant ACE2 to investigate viral entry mechanisms, evaluate therapeutic candidates, characterize spike protein interactions, and support the development of next-generation antiviral and cardiovascular therapeutics.

Applications of Human ACE2 Protein

• SARS-CoV-2 spike protein binding studies
• COVID-19 therapeutic and antiviral research
• Receptor-ligand interaction assays
• Neutralizing antibody screening and characterization
• ACE2 inhibitor and drug discovery programs
• Structural biology and protein interaction studies
• ELISA, Western blot, and immunological assays
• Cardiovascular and renin-angiotensin system research

Biological Significance of ACE2

ACE2 serves as a critical regulator of the renin-angiotensin system and contributes to cardiovascular, pulmonary, renal, and metabolic homeostasis. By converting angiotensin II into angiotensin-(1-7), ACE2 exerts anti-inflammatory, anti-fibrotic, and vasodilatory effects that help maintain tissue function and protect against pathological injury. In addition to its physiological role, ACE2 functions as the primary entry receptor for SARS-CoV-2 and several related coronaviruses. Binding of the viral spike protein to ACE2 initiates receptor engagement and membrane fusion events that enable infection of host cells. Because of its dual importance in normal physiology and viral pathogenesis, ACE2 remains one of the most extensively studied proteins in cardiovascular biology, infectious disease research, and therapeutic development. Recombinant ACE2 continues to be widely used for investigating coronavirus-host interactions, receptor biology, and the development of novel antiviral intervention strategies.