Human Angiotensin-converting enzyme 2 protein

SKU: orb640280

Description

This Human Angiotensin-converting enzyme 2 protein spans the amino acid sequence from region 18-740aa. Purity: Greater than 85% as determined by SDS-PAGE.

Research Area

Cardiovascular Research

Images & Validation

• Application Notes:
  We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Key Properties

• Source: Mammalian cell
• Biological Origin: Homo sapiens (Human)
• Biological Activity: ①Measured by ACE2 protein binding ability in a functional ELISA. Coat the plate with 0.2μg/well (2μg/ml, 100μl/well) of SARS-CoV-2 S1 protein, add 100μl/well (0.7629-100000ng/ml, gradient dilution, 2x to 18x) of ACE2 protein and 100μl/well of Peroxidase-Affinipure Goat Anti-Human IgG, Fcγ Fragment Specific. Wells were washed with buffer, and then A450 nm was measured. The results showed SARS-CoV-2 S1 protein could bind ACE2 protein. The EC50 is 56.64 - 103.6 ng/ml. ②Measured by ACE2 protein binding ability in a functional ELISA. Coat the plate with 0.5μg/well (5μg/ml, 100μl/well) of SARS-CoV-2 S1-RBD protein, add 100μl/well (0.762939-100000ng/ml, gradient dilution, 2x to 18x) of ACE2 protein and 100μl/well of Peroxidase-Affinipure Goat Anti-Human IgG, Fcγ Fragment Specific. Wells were washed with buffer, and then A450 nm was measured. The results showed SARS-CoV-2 S1-RBD protein could bind ACE2 protein. The EC50 is 31.80 - 44.69 ng/ml. ③Measured by ACE2 protein binding ability in a functional ELISA. Coat the plate with 0.5μg/well (5μg/ml, 100μl/well) of SARS-CoV-2 S1-RBD protein, add 100μl/well (0.762939-100000ng/ml, gradient dilution, 2x to 18x) of ACE2 protein and 100μl/well of Peroxidase-Affinipure Goat Anti-Human IgG, Fcγ Fragment Specific. Wells were washed with buffer, and then A450 nm was measured. The results showed SARS-CoV-2 S1-RBD protein could bind ACE2 protein. The EC50 is 2.785-9.139 ng/ml. ④Measured by ACE2 protein binding ability in a functional ELISA. Coat the plate with 0.2μg/well (2μg/ml, 100μl/well) of ACE2 protein, add 100μl/well (0.00001164153-200000ng/ml, gradient dilution, 4x to 18x) of SARS-CoV-2 S1-RBD protein and 100μl/well of Peroxidase-Affinipure Goat Anti-Human IgG, Fcγ Fragment Specific. Wells were washed with buffer, and then A450 nm was measured. The results showed SARS-CoV-2 S1-RBD protein could bind ACE2 protein. The EC50 is 8.363-12.82 ng/ml ng/ml. ⑤The SPR sensorgram shows the binding between ACE2 protein and SARS-CoV-2 S1-RBD protein. ACE2 protein was injected at 5 concentrations (400, 200, 100, 50, 0 nM) across 0.5 mg/ml of SARS-CoV-2 S1-RBD protein captured on a COOH chip. The results showed ACE2 protein could bind SARS-CoV-2 S1-RBD protein with an affinity constant of 100 nM. ⑥The SPR sensorgram shows the binding between ACE2 protein and SARS-CoV-2 S1-RBD protein. ACE2 protein was injected at 5 concentrations (100, 50, 25, 12.5, 0 nM) across 0.5 mg/ml of SARS-CoV-2 S1-RBD protein captured on a COOH chip. The results showed ACE2 protein could bind SARS-CoV-2 S1-RBD protein with an affinity constant of 13.8 nM.
• Tag: C-terminal hFc1-tagged
• Expression Region: 18-740aa
• Protein Length: Partial
• Endotoxins: Less than 1.0 EU/μg as determined by LAL method.
• MW: 112.5 kDa
• Purity: Greater than 85% as determined by SDS-PAGE.
• Protein Sequence: QSTIEEQAKTFLDKFNHEAEDLFYQSSLASWNYNTNITEENVQNMNNAGDKWSAFLKEQSTLAQMYPLQEIQNLTVKLQLQALQQNGSSVLSEDKSKRLNTILNTMSTIYSTGKVCNPDNPQECLLLEPGLNEIMANSLDYNERLWAWESWRSEVGKQLRPLYEEYVVLKNEMARANHYEDYGDYWRGDYEVNGVDGYDYSRGQLIEDVEHTFEEIKPLYEHLHAYVRAKLMNAYPSYISPIGCLPAHLLGDMWGRFWTNLYSLTVPFGQKPNIDVTDAMVDQAWDAQRIFKEAEKFFVSVGLPNMTQGFWENSMLTDPGNVQKAVCHPTAWDLGKGDFRILMCTKVTMDDFLTAHHEMGHIQYDMAYAAQPFLLRNGANEGFHEAVGEIMSLSAATPKHLKSIGLLSPDFQEDNETEINFLLKQALTIVGTLPFTYMLEKWRWMVFKGEIPKDQWMKKWWEMKREIVGVVEPVPHDETYCDPASLFHVSNDYSFIRYYTRTLYQFQFQEALCQAAKHEGPLHKCDISNSTEAGQKLFNMLRLGKSEPWTLALENVVGAKNMNVRPLLNYFEPLFTWLKDQNKNSFVGWSTDWSPYADQSIKVRISLKSALGDKAYEWNDNEMYLFRSSVAYAMRQYFLKVKNQMILFGEEDVRVANLKPRISFNFFVTAPKNVSDIIPRTEVEKAIRMSRSRINDAFRLNDNSLEFLGIQPTLGPPNQPPVS

Storage & Handling

• Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20℃/-80℃. The shelf life of lyophilized form is 12 months at -20℃/-80℃.
• Form/Appearance: Lyophilized powder
• Buffer/Preservatives: Lyophilized from a 0.2 μm sterile filtered PBS, 6% Trehalose, pH 7.4
• Expiration Date: 6 months from date of receipt.
• Disclaimer: For research use only

(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.

Measured by its binding ability in a functional ELISA. Immobilized SARS-CoV-2-S at 2 μg/ml can bind human ACE2, the EC50 of SARS-CoV-2-S protein is 56.64 - 103.6 ng/ml.

Measured by its binding ability in a functional ELISA. Immobilized SARS-CoV-2-S1-RBD at 5 μg/ml can bind human ACE2, the EC50 of human ACE2 protein is 31.80 - 44.69 ng/ml.

Measured by its binding ability in a functional ELISA. Immobilized SARS-CoV-2-S1-RBD at 5 μg/ml can bind human ACE2, the EC50 is 2.785-9.139 ng/ml.

Measured by its binding ability in a functional ELISA. Immobilized human ACE2 at 2 μg/ml can bind SARS-CoV-2-S1-RBD, the EC50 of human ACE2 protein is 8.363-12.82 ng/ml.

SARS-CoV-2 Spike protein RBD his/sumostar tag captured on COOH chip can bind Human ACE2 protein Fc tag with an affinity constant of 100 nM as detected by LSPR Assay.

SARS-CoV-2 Spike protein RBD his/myc tag captured on COOH chip can bind Human ACE2 protein Fc tag with an affinity constant of 13.8 nM as detected by LSPR Assay.

Quick Database Links

UniProt

Q9BYF1