Hello; I was wondering if NOVUS had any information or reference regarding "normal" ACE2 levels? I purchased NBP2-66387

Unfortunately, we do not have any info or references on the levels of ACE2 that is defined as normal. We would recommend performing a literature search for this info for the type of samples you would be using.

I'm interested in the ELISA kit (NBP2-66387). But I'm not sure what's the immunogen (standard) included in the kit. because we are going to use this kit to detect variant of human ACE2.

The immunogen for the capture antibody was AA195-275 and the immunogen for the detection antibody was AA430-545. If your variant contains those amino acids, then this kit should work for you.

Human ACE-2 ELISA Kit (Chemiluminescence)

Name: Human ACE-2 ELISA Kit (Chemiluminescence)
Brand: Novus Biologicals
SKU: NBP2-66387

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-66387

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Product Specifications
Precision
Recovery
Linearity
Scientific Data
Kit Contents
Preparation & Storage
Background
Product Documents
Specific Notices

Key Product Details

Sample Type & Volume Required Per Well

Serum, plasma and other biological fluids (100 uL)

Sensitivity

46.88 pg/mL

Assay Range

78.13-5000 pg/mL

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Product Specifications

Assay Type

Sandwich-CLIA

Kit Type

ELISA Kit (Chemiluminescence)

Reactivity

Human

Specificity

This kit recognizes Human ACE2 in samples. No significant cross-reactivity or interference between Human ACE2 and analogues was observed.

Precision

Intra-Assay Precision (Precision within an assay) CV% < 9.58%

Inter-Assay Precision (Precision between assays) CV% < 9.83%

Recovery for Human ACE-2 ELISA Kit (Chemiluminescence)

Recovery

86-114%

Linearity

Scientific Data Images for Human ACE-2 ELISA Kit (Chemiluminescence)

ELISA: Human ACE-2 ELISA Kit (Chemiluminescence) [NBP2-66387] -

ELISA: Human ACE-2 ELISA Kit (Chemiluminescence) [NBP2-66387] - Standard Curve Reference

Kit Contents for Human ACE-2 ELISA Kit (Chemiluminescence)

Biotinylated Detection Ab Diluent
Concentrated Biotinylated Detection Ab (100x)
Concentrated HRP Conjugate (100x)
Concentrated Wash Buffer (25x)
HRP Conjugate Diluent
Micro CLIA Plate (Dismountable)
Plate Sealer
Product Manual
Reference Standard
Sample Diluent
Substrate Reagent A
Substrate Reagent B

Preparation and Storage

Shipping

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

Stability & Storage

Storage of components varies. See protocol for specific instructions.

Background: ACE-2

Angiotensin I Converting Enzyme 2 (ACE2), also known as ACEH (ACE homologue), is an integral membrane protein and a zinc metalloprotease of the ACE family (theoretical molecular weight 92 kDa). The predicted mouse ACE2 protein sequence consists of 798 amino acids, including an N-terminal signal peptide, a single catalytic domain, a C-terminal membrane anchor, and a short cytoplasmic tail. Mouse ACE2 is 40% homologous in amino acid identity to the N- and C-terminal domains of mouse somatic ACE. Enzymatically, ACE2 converts the inactive vasoconstrictor angiotensin I (AngI) to Ang1-9 and the active form AngII to Ang1-7, unlike ACE, which converts Ang I to Ang II.

Genetic data from Drosophila, mice and rats show that the ACE2 protein is an essential regulator of heart function in vivo. ACE2 mRNA is found at high levels in testis, kidney and heart with moderate levels in colon, small intestine, and ovary. The ACE2 protein contributes to organ function through the renin-angiotensin system, playing a central role in vascular, renal, and myocardial physiology.

Virology research has demonstrated that the severe acute respiratory syndrome coronavirus (SARS-CoV) spike protein binds to its functional receptor, ACE2 (1). Vimentin is a type III intermediate filament protein expressed in mesenchymal cells that helps comprise the cytoskeleton in all animal cells. Studies have demonstrated that vimentin allows cell binding that allows the uptake of SARS-CoV spike protein into a host (2). This direct interaction of SARS-CoV with vimentin has been identified as an entry mechanism for the virus into a host, mediated by the SARS-CoV receptor ACE2 (1,2). It has been shown that ACE2 is the SARS-CoV-2 receptor required for cell entry and plays a physiological role in the replication of SARS-CoV in an infected host (1). Studies using human ACE2 antibody demonstrated a blockade of SARS-CoV-2 and ACE2 interaction, indicating an important physiological component of viral transmission and potential anti-viral therapeutic strategies (3).

References

1. Li, W., Moore, M. J., Vasilieva, N., Sui, J., Wong, S. K., Berne, M. A., . . . Farzan, M. (2003). Angiotensin-converting enzyme 2 is a functional receptor for the SARS coronavirus. Nature, 426(6965), 450-454. doi:10.1038/nature02145

2. Yu YT, Chien SC, Chen IY, Lai CT, Tsay YG, Chang SC, Chang MF. (2016) Surface vimentin is critical for the cell entry of SARS-CoV. J Biomed Sci. doi: 10.1186/s12929-016-0234-7

3. Hoffmann, M., Kleine-Weber, H., Schroeder, S., Kruger, N., Herrler, T., Erichsen, S., . . . Pohlmann, S. (2020). SARS-CoV-2 Cell Entry Depends on ACE2 and TMPRSS2 and Is Blocked by a Clinically Proven Protease Inhibitor. Cell. doi:10.1016/j.cell.2020.02.052

Long Name

Angiotensin I Converting Enzyme 2

Alternate Names

ACE2, ACEH

Gene Symbol

ACE2

Additional ACE-2 Products

Product Documents for Human ACE-2 ELISA Kit (Chemiluminescence)

Product Datasheets

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Protocols & Manuals

Download Human ACE-2 ELISA Kit (Chemiluminescence) Manual

COA

Product Specific Notices for Human ACE-2 ELISA Kit (Chemiluminescence)

This product is for research use only and is not approved for use in humans or in clinical diagnosis. ELISA Kits are guaranteed for 6 months from date of receipt.

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