AAA Biotech provides a variety of high-quality recombinant and natural/native proteins that are proven to work in a wide range of experiments. Explore our products to find the active protein that best fits your needs or experimental model.
Application Data (Measured by its ability to inhibit recombinant rmWnt3a induced alkaline phosphatase production by C3H10T 1/2 cells. The ED50 for this effect is 0.05-0.3 ug/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized zebrafish EFNB2A-His at 10 ug/ml (100 ul/well) can bind human EphB4-Fc, The EC50 of human EphB4-Fc is 15.5-36.3 ng/ml.)
Application Data (Measured by its ability to inhibit rhBMP4-induced alkaline phosphatase production by MC3T3-E1 cells. The ED50 for this effect is typically 0.5-2.5 ug/mL in the presence of 50 ng/mL of recombinant human BMP4.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized canine EFNB2-His at 10 ug/ml (100 ul /well) can bind human EphB4-Fc, The EC50 of human EphB4-Fc is 9-20 ng/ml.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized canine NRG1 at 10 ug/ml (100 ul/well) can bind human ErbB4-Fc, The EC50 of human ErbB4-Fc is 0.19-0.43 ug/ml.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized Human ACE2 (mFc tag) at 2 ug/mL (100 uL/well) can bind SARS-CoV-2 (2019-nCoV) Spike RBD(F490L)-His, the EC50 of SARS-CoV-2 (2019-nCoV) Spike RBD(F490L)-His is 30-150ng/mL.)
Application Data (Immobilized ACE2 Protein, Human, Recombinant (mFc Tag) at 2 ug/mL (100 uL/well) can bind SARS-CoV-2 (2019-nCoV) Spike RBD(E484K)-His, the EC50 of SARS-CoV-2 (2019-nCoV) Spike RBD(E484K)-His is 7-42ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized ACE2 Protein, Human, Recombinant (mFc Tag)(10108-H05H) at 2ug/mL (100uL/well) can bind SARS-CoV Spike S1+S2 ECD-His Recombinant Protein (S577A, Isolate Tor2)(40634-V08B),the EC50 of SARS-CoV Spike S1+S2 ECD-His Recombinant Protein (S577A, Isolate Tor2)(40634-V08B) is 300-900ng/mL.)
Application Data (Measured by its ability to inhibit Topflash reporter activity in HEK293T human embryonic kidney cells. The ED50 for this effect is typically 0.4-2 ug/mL in the presence of 300 ng/mL of Recombinant Mouse Wnt-3a.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized mouse F7-his at 10 ug/ml (100 ul/well) can bind biotinylated mouse F3-his. The EC50 of biotinylated mouse F3-his is 0.1-0.3 ug/ml.)
Application Data (Measured in a cell proliferation assay using Balb/c 3T3 mouse embryonic fibroblasts. The ED50 for this effect is typically 0.1-0.6 ng/mL.)
SDS-PAGE (Measured by its ability to inhibit the mouse CSF-induced proliferation of M-NFS-60 mouse myelogenous leukemia lymphoblast cells. The ED50 for this effect is typically 30-140ng/mL in the presence of 15 ng/mL mouse M-CSF.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized recombinant Mouse/Human BDNF Protein (Native) at 10 ug/ml (100 ul/well) can bind biotinylated mouse TrkB-His with a linear range of 10-80 ng/ml.)
Application Data (Measured by its ability to inhibit FGF acidic (aFGF / FGF1) dependent proliferation of Balb/c3T3 mouse embryonic fibroblasts. The ED50 for this effect is typically 0.1-0.6 ug/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized mouse PCSK9 at 10 ug/ml (100 ul/well) can bind biotinylated recombinant human LDLR. The EC50 of biotinylated human LDLR is 0.12 ug/ml.)
Application Data (Immobilized mouse PDPN-Fch at 10 ug/ml (100 ul/well) can bind biotinylated human CLEC1B-His, The EC50 of biotinylated human CLEC1B-His is 0.04-0.08 ug/ml.)
Application Data (Measured by its ability to bind recombinant mouse CD226/DNAM-1. Immobilized recombinant mouse CD155/PVR at 1 ug/ml (100 ul/well) can bind recombinant mouse CD226/DNAM-1 with a linear range of 0.78-100 ng/ml.)
Application Data (Measured by its ability to inhibit BMP9-induced alkaline phosphatase production by MC3T3E1 mouse chondrogenic cells.The ED50 for this effect is typically 25-100 ng/mL in the presence of 2 ng/mL of recombiant human BMP9.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized human CTLA4 at 10 ug/mL (100 ul/well) can bind mouse CD80-Fc, The EC50 of mouse CD80-Fc is 28 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized Rat ICOS ligand hFc at 2 ug/mL (100 uL/well) can bind Mouse ICOS His, the EC50 of Mouse ICOS His is 150-800 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized human HHLA2h at 10 ug/mL (100 uL/well) can bind human TMIGD2-Fc3, the EC50 of human TMIGD2-Fc3 is 50-200 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized human His-NKG2D(78-216) at 10 ug/ml (100 ul/well) can bind RAET1L-Fc, The EC50 of RAET1L-Fc is 13-30 ng/ml.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized human NCR3 at 10ug/mL (100uL/well) can bind human B7-H6 (16140-H02H), the EC50 of human B7-H6 is 20-100 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized Human ACE2 (mFc tag) at 2 ug/mL (100 uL/well) can bind SARS-CoV-2 (2019-nCoV) Spike S1(K417N, E484K, N501Y, D614G)-His, the EC50 of SARS-CoV-2 (2019-nCoV) Spike S1(K417N, E484K, N501Y, D614G)-His is 15-90 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized Human ACE2 (mFc tag) at 2 ug/mL (100 uL/well) can bind SARS-CoV-2 (2019-nCoV) Spike S1(HV69-70 deletion, N501Y, D614G)-His, the EC50 of SARS-CoV-2 (2019-nCoV) Spike S1(HV69-70 deletion, N501Y, D614G)-His is 8-50 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized human ACE2 protein (Fc tag)(10108-H05H) at 2 ug/mL (100 uL/well) can bind SARS-CoV-2 (2019-nCoV) Spike S1-AVI & His Recombinant Protein, Biotinylated (40591-V27H-B),the EC50 of SARS-CoV-2 (2019-nCoV) Spike S1-AVI & His Recombinant Protein, Biotinylated (40591-V27H-B) is 400-800 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized human ACE2 protein (Fc tag)(10108-H05H) at 2 ug/mL (100 uL/well) can bind SARS-CoV-2 (2019-nCoV) Spike RBD-His (V367F) Recombinant Protein (40592-V08H1), the EC50 of SARS-CoV-2 (2019-nCoV) Spike RBD-His (V367F) Recombinant Protein (40592-V08H1) is 20-50 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized human ACE2 protein (Fc tag)(10108-H05H) at 2 ug/mL (100 uL/well) can bind SARS-CoV-2 (2019-nCoV) Spike RBD-His (F342L) Recombinant Protein (40592-V08H6), the EC50 of SARS-CoV-2 (2019-nCoV) Spike RBD-His (F342L) Recombinant Protein (40592-V08H6) is 20-50 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized human ACE2 protein (Fc tag)(10108-H05H) at 2 ug/mL (100 uL/well) can bind SARS-CoV-2 (2019-nCoV) Spike RBD(G476S)-His Recombiant Protein (40592-V08H8), the EC50 of SARS-CoV-2 (2019-nCoV) Spike RBD(G476S)-His Recombiant Protein (40592-V08H8) is 25-60 ng/mL.)
Application Data (Measured in antiviral assays using L929 cells infected with vesicular stomatitisvirus (VSV). The ED50 for this effect is 0.1-0.8 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized mouse VEGFR3-His at 10 ug/mL (100 ul/well) can bind mouse Fc-VEGFD, The EC50 of mouse Fc-VEGFD is 44 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized Mouse EphA2 at 2 ug/ml (100 ul/well) can bind mouse EphrinA1 with a linear range of 0.16-20 ng/ml.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized mouse EphrinA3 at 1 ug/ml (100 ul/well) can bind mouse EPHA6 with a linear ranger of 6.25-400 ng/ml.)
Application Data (Measured by its binding ability in a functional ELISA. 1. Immobilized human EphA7 at 2 ug/ml (100 ul/well) can bind mouse EphrinA4 Fc Chimera with a linear range of 0.08-10 ng/ml. 2. Immobilized mouse EphA7 at 2 ug/ml (100 ul/well) can bind mouse EphrinA4 Fc Chimera with a linear range of 0.08-10 ng/ml.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized mouse IFNG-His at 10 ug/ml (100 ul/well) can bind mouse IFNGR1-Fc. The EC50 of IFNGR1-Fc is 58.2-135.9 ng/ml.)
Application Data (Measured in antiviral assay using L929 cells infected with vesicular stomatitisvirus (VSV). The ED50 for this effect is typically 20-80 ng/mL.)
Application Data (Measured in antiviral assays using L929 cells infected with vesicular stomatitisvirus (VSV).The ED50 for this effect is 0.05-0.3 ng/mL.)
Application Data (Measured by its binding ability in a functional ELISA. Immobilized Mouse Interferon Gamma at 2 ug/ml (100 ul/well) can bind Mouse IFNGR1 hFc, the EC50 of Mouse IFNGR1 hFc is7.0-30.0 ng/mL.)
Application Data (Active alpha synuclein aggregate seeds the formation of new alpha Synuclein aggregates from the pool of active alpha Synuclein monomers. Thioflavin T is a fluorescent dye that binds to beta sheet-rich structures, such as those in alpha Synuclein aggregates. Upon binding, the emission spectrum of the dye experiences a red-shift, and increased fluorescence intensity. Thioflavin T emission curves show increased fluorescence (correlated to alpha Synuclein protein aggregation) over time when 10 nM of active alpha Synuclein aggregate is combined with 100 uM of active alpha Synuclein monomer, as compared to when 100 uM of active alpha Synuclein monomer is combined with 10 nM of control alpha Synuclein aggregate, or 100 uM of control alpha Synuclein monomer is combined with 10 nM of control alpha Synuclein aggregate. Thioflavin T ex = 450 nm, em = 485 nm.)
Application Data (Primary rat hippocampal neurons show lewy body inclusion formation when treated with active Alpha Synuclein Protein Aggregate at 4 ug/ml (D-F), but not when treated with control Alpha Synuclein Protein Aggregate at 4 ug/ml (A-C). Tissue: Primary hippocampal neurons. Species: Sprague-Dawley rat. Fixation: 4% formaldehyde made from PFA. Primary Antibody: Mouse anti-pSer129 Antibody at 1:1000 24 hours at 4 degree C. Secondary Antibody: FITC Goat Anti-Mouse (green) at 1:700 for 1 hours at RT. Counterstain: Hoechst (blue) nuclear stain at 1:4000 for 1 hour at RT. Localization: Lewy body incluscions. Magnification: 20x.)
SDS-PAGE (SDS-PAGE of ~14 kDa Human Recombinant Alpha Synuclein Protein Aggregate. Lane 1: Molecular Weight Ladder (MW). Lane 2: Alpha Synuclein Protein Aggregate (SPR-317).)
SDS-PAGE (SDS-PAGE of ~14 kDa Active Human Recombinant Alpha Synuclein Protein Aggregate. Lane 1: Molecular Weight Ladder (MW). Lane 2: Active Alpha Synuclein Protein Aggregate.)
Application Data (Active alpha synuclein aggregate seeds the formation of new alpha Synuclein aggregates from the pool of active alpha Synuclein monomers. Thioflavin T is a fluorescent dye that binds to beta sheet-rich structures, such as those in alpha Synuclein aggregates. Upon binding, the emission spectrum of the dye experiences a red-shift, and increased fluorescence intensity. Thioflavin T emission curves show increased fluorescence (correlated to alpha Synuclein protein aggregation) over time when 10 nM of active alpha Synuclein aggregate is combined with 100 uM of active alpha Synuclein monomer, as compared to active alpha Synuclein aggregate and active alpha Synuclein monomer alone. Thioflavin T ex = 450 nm, em = 485 nm.)
Application Data (Primary rat hippocampal neurons show lewy body inclusion formation when treated with active Alpha Synuclein Protein Aggregate at 4 ug/ml (D-F), but not when treated with control Alpha Synuclein Protein Aggregate at 4 ug/ml (A-C). Tissue: Primary hippocampal neurons. Species: Sprague-Dawley rat. Fixation: 4% formaldehyde from PFA. Primary Antibody: Mouse anti-pSer129 Antibody at 1:1000 24 hours at 4 degree C. Secondary Antibody: FITC Goat Anti-Mouse (green) at 1:700 for 1 hours at RT. Counterstain: Hoechst (blue) nuclear stain at 1:4000 for 1 hour at RT. Localization: Lewy body incluscions. Magnification: 20x.)
SDS-PAGE (SDS-PAGE of ~14 kDa Active Mouse Recombinant Alpha Synuclein Protein Monomer (SPR-323). Lane 1: Molecular Weight Ladder (MW). Lane 2: Active Alpha Synuclein Protein Monomer (2 ug) (SPR-323).)
Application Data (Active alpha synuclein aggregate (SPR-324) seeds the formation of new alpha Synuclein aggregates from the pool of active alpha Synuclein monomers (SPR-323). Thioflavin T is a fluorescent dye that binds to beta sheet-rich structures, such as those in alpha Synuclein aggregates. Upon binding, the emission spectrum of the dye experiences a red-shift, and increased fluorescence intensity. Thioflavin T emission curves show increased fluorescence (correlated to alpha Synuclein protein aggregation) over time when 10 nM of active alpha Synuclein aggregate (SPR-324) is combined with 100 uM of active alpha Synuclein monomer (SPR-323), as compared to active alpha Synuclein aggregate (SPR-324) and active alpha Synuclein monomer (SPR-323) alone. Thioflavin T ex = 450 nm, em = 485 nm.)
Application Data (Immobilized ACE2 Protein, Human, Recombinant (mFc Tag)(Cat:10108-H05H) at 2 ug/mL (100 uL/well) can bind Recombinant SARS-CoV-2 (BA.2.75) Spike RBD Protein (His Tag)(Cat:AAA258568), the EC50 is 3-10ng/mL.)
Application Data (Immobilized human ACE2 protein (Fc tag)(Cat: 10108-H05H) at 2 ug/mL (100 uL/well) can bind Recombinant SARS-CoV-2 (BA.4.6) Spike S1+S2 trimer Protein (ECD, His Tag)(Cat: AAA258586), the EC50 is 8-24 ng/mL.)
Application Data (Immobilized human ACE2 protein (Fc tag)(Cat: 10108-H05H) at 2 ug/mL (100 uL/well) can bind Recombinant SARS-CoV-2 (BA.3) Spike RBD Protein (R319-K537, His Tag)(Cat: AAA258588), the EC50 is 7-21 ng/mL.)
Application Data (Immobilized human ACE2 protein (Fc tag)(Cat: 10108-H05H) at 2 ug/mL (100 uL/well) can bind Recombinant SARS-CoV-2(BA.4/BA.5)Spike RBD Protein(His&AVI Tag),Biotinylated (Cat: AAA258592), the EC50 is 15-45 ng/mL.)
SARS-CoV-2 (BA.4/BA.5) Spike RBD Protein (His & AVI Tag), Biotinylated
Purity
>95% as determined by SDS-PAGE. >95% as determined by SEC-HPLC.
Pricing
What Are Active Proteins?
Proteins are large molecules made up of long chains of amino acids.
They will typically fold into a very particular 3-dimensional shape/conformation, that is sometimes referred to as their “native” form, which allows them to work properly in the body. For the purposes of product categorization, AAA Biotech will typically refer to proteins purified from their original animal host as being “native” proteins (this is to signify their difference compared to their “recombinant” or “synthetic” protein counterparts).
If a protein successfully folds into the correct shape, it is will typically display high fidelity characteristics to its original protein in its original animal host, and be classified as an active protein, as it will be able to function “normally” in most enzymatic or binding capacities. If it loses this shape, due to factors such as heat or strong chemicals (such as detergents), it becomes inactive and is no longer able to perform its basic functions. All of the proteins in this category are made under strict quality control, and they are active, pure, low in contaminants, and stable.
Most are stored as freeze-dried powders and come without extra tags, so they’re very close to the actual natural/native form.
Key Applications of Active Proteins
1. Scientific Research
Aid in the study of how proteins function in the body
Aid in understanding various disease processes
2. Drug Development
Powerful tools to investigate how potential drugs interact with specific proteins
Ideal for identifying drug targets
3. Cell Culture
Are routinely utilized to support cell growth and function (e.g., using exogenous growth factors)
Can be used to promote cellular development into specific types (differentiation)
4. Diagnostics
Regularly utilized in tests to detect diseases or infections (e.g., COVID-19, cancer)
Note: All products are strictly for research-use only (RUO).
5. Therapeutics
Some active proteins are used directly as treatments (e.g., insulin, enzymes)
Note: All products are strictly for research-use only (RUO).
6. Vaccine Development
Used to create or test vaccines by mimicking parts of viruses or bacteria
7. Biochemical Assays
They can facilitate the characterization of enzyme activity, binding strength, or protein interactions in lab tests
Why Buy Active Proteins from AAA Biotech?
High biological activity – Verified to perform as expected or indicated on datasheet
Strict quality control – We are confident in our active proteins’ reliability and consistency
High purity & low endotoxin – Ideal for applications involving sensitive or precious samples/components
Freeze-dried for stability – Long shelf life and straightforward storage
Mostly tag-free – Closer to natural/native protein form
FAQ
1. What are active proteins used for in research?
Active proteins are used primarily in the study of how proteins function, in characterizing/discovering drug interactions, supporting cell growth, running biochemical assays, and in development of diagnostics or therapeutics.
2. How are AAA Biotech's active proteins validated?
AAA Biotech’s active proteins are validated through strict quality control and functional assays to ensure they are properly folded and active. “Active”, though, can be an ambiguous term, so if a specific “activity” or “binding” capability of a protein is of crucial interest to you, please inquire with us prior to purchase, and we will provide further details on how the “Active” modifier was determined to be applicable.
3. Are these proteins tested for biological activity?
Yes, all active proteins from AAA Biotech are tested to confirm they have the expected biological activity before being offered for use. Though, said “biological activity” can be either “enzymatic”, “binding”, or both.
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