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AAA Biotech also known as AAA Bio or AAABio 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.
Viewing 250-300 of 2583 product results
Bioactivity
(Aprotinin (AP) is a competitive serine protease inhibitor. Reversibly binds to and blocks the enzymatic active site. Inhibits a range of serine proteases including trypsin, chymotrypsin, kallikrein and plasmin. Inhibits cytopathogenic effect of SARS-CoV-2 and double-stranded RNA formation in SARS-CoV-2-infected cells. The activity of recombinant bovine AP was measured by its ability to inhibit trypsin cleavage of a peptide substrate BAPNA in the assay buffer 200 mM Triethanolamine hydrochloride, 20 mM CaCl2, pH 7.8. The reaction was performed in adding 20 ul 4 mg/mL trypsin diluted by 1mM HCl to 160 ul assay buffer and 20 ul 0.85% (w/v) NaCl and start the reaction by adding 100 ul of 1mg/ml BAPNA. Include a substrate blank containing 160 ul assay buffer, 20 ul 1mM HCl, 20 ul 0.85% (w/v) NaCl and 100 uL of 1mg/ml substrate. Rapidly mixing at 25 degree C, then read at 405 nm in kinetic mode for 5 minutes using a microplate reader controlling the ?A405nm/min=0.08-0.12. The 20 ul different concentrations of recombinant bovine AP was incubated with 20 ul 4 mg/mL trypsin in 160 ul assay buffer at 25 degree C for 10 minutes followed by adding 100 ul substrate, then read at 405 nm in kinetic mode for 5 minutes using a microplate reader. Under these conditions, the enzyme amount of 50% inhibition of trypsin activity per minute is defined as a unit. The specific activity of recombinant bovine AP is >3000 U/mg.)
Aprotinin (AP), Active Protein (Cat# AAA161811)
Full Name
Active Aprotinin (AP)
Applications
Activity Assay, Cell Culture
Purity
Greater than 95% by SDS-PAGE
Pricing
Bioactivity
(Tissue Inhibitors of Metalloproteinase 4 (TIMP4) is an enzyme that in humans is encoded by the TIMP4 gene. This gene belongs to the tissue inhibitor of metalloproteinases gene family. The proteins encoded by this gene family are inhibitors of the matrix metalloproteinases, a group of peptidases involved in degradation of the extracellular matrix. The secreted, netrin domain-containing protein encoded by this gene is involved in regulation of platelet aggregation and recruitment and may play role in hormonal regulation and endometrial tissue remodeling. The activity of recombinant bovine TIMP4 was measured by its ability to inhibit rhMMP2 cleavage of a fluorogenic peptide substrate MCA-Pro-Leu-Gly-Leu-DPA-Ala-Arg-NH2 in the assay buffer 50 mM Tris, 10 mM CaCl2, 150 mM NaCl, 0.05% (w/v) Brij-35, pH 7.5. rhMMP2 was diluted to 100 ug/ml and activated with 1 mM APMA at 37 degree C for 1 hour and rbTIMP4 (MW: 24.05 KD) was diluted to different concentrations with the assay buffer. Mix 8 ul of rbTIMP4 curve dilutions, 12.8 ul of activated rhMMP-2, and 59.2 ul of assay buffer, including a control containing assay buffer and the diluted rhMMP-2 and incubate the reactions for 2 hours at 37 degree C. Loading 50 ul of the incubated mixtures which were diluted five-fold in assay buffer into empty wells of a plate, and start the reaction by adding 50 ul of 20 uM substrate. Include a substrate blank containing 50 ul of assay buffer and 50 ul of 20 uM substrate. Then read at excitiation and emission wavelengths of 320 nm and 405 nm, respectively, in kinetic mode for 5 minutes. The result was shown in Figure 1 and it was obvious that recombinant bovine TIMP4 significantly decreased rhMMP2 activity. The inhibition IC50 was )
Tissue Inhibitors Of Metalloproteinase 4 (TIMP4), Active Protein (Cat# AAA161701)
Full Name
Active Tissue Inhibitors Of Metalloproteinase 4 (TIMP4)
Applications
Activity Assay, Cell Culture
Purity
Greater than 95% by SDS-PAGE
Pricing
Bioactivity
(Procollagen II N-Terminal Propeptide is specific for cartilaginous tissues. It is essential for the normal embryonic development of the skeleton, for linear growth and for the ability of cartilage to resist compressive forces, which was are associated wit)
Procollagen II N-Terminal Propeptide (PIINP), Active Protein (Cat# AAA153010)
Full Name
Active Procollagen II N-Terminal Propeptide (PIINP)
Gene Names
COL2A1; AOM; ANFH; SEDC; COL11A3
Applications
Activity Assay, Cell Culture
Purity
Greater than 95% by SDS-PAGE
Pricing
Application Data
Fractalkine (CX3CL1), Active Protein (Cat# AAA214279)
Full Name
Recombinant Human Fractalkine (CX3CL1)
Gene Names
CX3CL1; NTN; NTT; CXC3; CXC3C; SCYD1; ABCD-3; C3Xkine; fractalkine; neurotactin
Purity
>95% as determined by SDS-PAGE
Pricing
Bioactivity
Angiotensin-Converting Enzyme 2/ACE-2, Active Protein (Cat# AAA177979)
Full Name
Recombinant Rhesus Macaque Angiotensin-Converting Enzyme 2/ACE-2 (C-Fc)
Purity
>95% as determined by reducing SDS-PAGE
Pricing
Prostate Specific Antigen, Active Protein (Cat# AAA59627)
Full Name
Prostate Specific Antigen, Human
Gene Names
KLK3; APS; PSA; hK3; KLK2A1
Purity
>/= 95% by SDS-PAGE
Pricing
Rheumatoid Factor (RF), Active Protein (Cat# AAA44877)
Full Name
Rheumatoid Factor (RF) Concentrate - > 25 kIU/mL
Purity
Purified
TGF-beta RI/ALK-5, Active Protein (Cat# AAA48990)
Full Name
Recombinant human TGF-beta RI/ALK-5 protein
Gene Names
TGFBR1; AAT5; ALK5; ESS1; LDS1; MSSE; SKR4; ALK-5; LDS1A; LDS2A; TGFR-1; ACVRLK4
Applications
Bioactivity, SDS-PAGE
Purity
> 90% by SDS-PAGE
Pricing
Apo Transferrin (ATF), Active Protein (Cat# AAA76530)
Full Name
Human Apo Transferrin (ATF)
Reactivity
Human
Purity
Greater than 98.0% as determined by Cellulose Acetate Electrophoresis.
Pricing
Neuron-specific Enolase, Active Protein (Cat# AAA78132)
Full Name
Neuron-specific enolase (NSE)
Gene Names
Eno2; NSE; RNEN3
Applications
ELISA
Purity
Ion-exchange chromatography and gel-filtration.
Pricing
APRIL, Active Protein (Cat# AAA75589)
Full Name
APRIL protein
Gene Names
TNFSF13; APRIL; CD256; TALL2; ZTNF2; TALL-2; TRDL-1; UNQ383/PRO715
Purity
> or = 95% pure by SDS-PAGE gel and HPLC
Pricing
Activity
(Figure 1 : ACE2 (human)(rec.) (AAA78521) binds with high affinity to the Spike (RBD) protein of the virus SARS-CoV-2. Method: ACE2 (human)(rec.) (AAA78521 ) is coated on an ELISA plate at 1 ug/ml overnight at 4°C. Spike (SARS-CoV-2):Fc (human)(RBD)(rec.) is added (starting at a concentration of 500 ng/ml with a twofold serial dilution) during one hour at RT and the interaction is then detected using an anti-human IgG (HRP).)
ACE2, Active Protein (Cat# AAA78521)
Full Name
Human ACE2 Protein (DYKDDDDK Tag)
Applications
Functional Assay
Purity
>95% (SDS-PAGE)
Pricing
ERYTHROPOIETIN ALPHA, Active Protein (Cat# AAA50528)
Full Name
RECOMBINANT HUMAN ERYTHROPOIETIN ALPHA
Gene Names
EPO; EP; MVCD2
Applications
Functional Assay
Purity
>98.0% by HPLC analysis and SDS-PAGE
Pricing
IFN GAMMA, Active Protein (Cat# AAA50533)
Full Name
RECOMBINANT HUMAN INTERFERON GAMMA
Gene Names
IFNG; IFG; IFI
Applications
Western Blot, Functional Assay
Purity
>98% by SDS PAGE and HPLC
Pricing
Bioactivity
(HTRF Assay for Recombinant YES1 activity. 1 uM TK substrate was incubated with different concentrations of YES1 protein in 10 ul reaction system containing 1×Enzymatic Buffer, 5 mM MgCl2, 1 mM DTT and 100 uM ATP for 1 hour. The 10 ul detection reagents containing anti-TK antibody (1:2) and SA-XL665 (1:100) diluted with 1× Detection Buffer were added and incubated with the reactions for 30 min. All the operations and reactions were performed at room temperature. HTRF assay was used for detection.)
SDS-PAGE
SUMO1, Active Protein (Cat# AAA258013)
Full Name
SUMO1 Protein, Human, Recombinant (His Tag)
Gene Names
SUMO1; DAP1; GMP1; PIC1; SMT3; UBL1; OFC10; SENP2; SMT3C; SMT3H3
Purity
>90% as determined by SDS-PAGE
Pricing
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+S2 ECD (HV69-70 deletion, Y144 deletion, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H)-His, the EC50 of SARS-CoV-2 (2019-nCoV) Spike S1+S2 ECD (HV69-70 deletion, Y144 deletion, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H)-His is 200-800 ng/mL.)
COVID 19 Spike S1+S2 ECD (HV69-70 deletion, Y144 deletion, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H)-His Coronavirus, Active Protein (Cat# AAA258080)
Full Name
SARS-CoV-2 (2019-nCoV) Spike S1+S2 ECD (HV69-70 deletion, Y144 deletion, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H)-His Recombinant Protein
Purity
>85% as determined by SDS-PAGE
Pricing
Application Data
(Measured by its ability to inhibit BMP9-induced alkaline phosphatase production by MC3T3E1 mouse chondrogenic cells. David, L. et al. (2007) Blood 109:1953. The ED50 for this effect is typically 60-300 ng/mL in the presence of 2 ng/mL of recombiant human BMP9.)
ALK-1, Active Protein (Cat# AAA258143)
Full Name
ALK-1 Protein, Mouse, Recombinant (His & hFc Tag)
Gene Names
Acvrl1; Alk1; Acvrlk1; AI115505; AI427544
Purity
>95% as determined by SDS-PAGE
Pricing
Bioactivity
(Surfactant Associated Protein C (SPC) is one of the pulmonary surfactant proteins. It is a membrane protein which manufactures surfactant. The propeptide of pulmonary surfactant C has an N-terminal alpha-helical segment whose suggested function was stabilization of the protein structure, since the latter can irreversibly transform from its native alpha-helical structure to beta-sheet aggregates and form amyloid fibrils. Besides, Monokine Induced By Interferon Gamma (MIg) has been identified as an interactor of SPC, thus a binding ELISA assay was conducted to detect the interaction of recombinant rat SPC and recombinant rat MIg. Briefly, SPC were diluted serially in PBS, with 0.01% BSA (pH 7.4). Duplicate samples of 100L were then transferred to MIg-coated microtiter wells and incubated for 2h at 37. Wells were washed with PBST and incubated for 1h with anti-SPC pAb, then aspirated and washed 3 times. After incubation with HRP labelled secondary antibody, wells were aspirated and washed 3 times. With the addition of substrate solution, wells were incubated 15-25 minutes at 37. Finally, add 50uL stop solution to the wells and read at 450nm immediately. The binding activity of SPC and MIg was shown in Figure 1, and this effect was in a dose dependent manner.Figure. The binding activity of SPC with MIg.)
Surfactant Protein C, Active Protein (Cat# AAA150111)
Full Name
Active Surfactant Protein C (SP-C)
Gene Names
Sftpc; SP-C
Applications
Activity Assay, Cell Culture
Purity
>95%
Pricing
Application Data
Platelet Factor 4, Active Protein (Cat# AAA37788)
Full Name
Human Platelet Factor 4
Gene Names
PF4; PF-4; CXCL4; SCYB4
Purity
>95% by SDS-PAGE analysis
Pricing
Fc gamma RIIB/CD32b, Active Protein (Cat# AAA49000)
Full Name
Recombinant human Fc gamma RIIB/CD32b protein
Gene Names
FCGR2B; CD32; FCG2; CD32B; FCGR2; IGFR2
Applications
Bioactivity, SDS-PAGE
Purity
> 95% by SDS-PAGE
Pricing
GFR alpha-1, Active Protein (Cat# AAA49003)
Full Name
Recombinant human GFR alpha-1 protein
Gene Names
GFRA1; GDNFR; RET1L; RETL1; TRNR1; GDNFRA; GFR-ALPHA-1
Applications
Bioactivity, SDS-PAGE
Purity
> 90% by SDS-PAGE
Pricing
SDS-PAGE
(3ug by SDS-PAGE under reducing condition and visualized fby coomassie blue stain.)
Peroxiredoxin 6, Active Protein (Cat# AAA48548)
Full Name
Peroxiredoxin 6, 1-224aa, Human, His tag, E Coli (Bioactivity Validated)
Gene Names
PRDX6; PRX; p29; AOP2; 1-Cys; NSGPx; aiPLA2; HEL-S-128m
Applications
SDS-PAGE, Enzyme Activity
Purity
> 95% by SDS-PAGE
Pricing
Bioactivity
(Mouse LIFR alpha inhibits human LIF (Cat# ATGP3533) induced cell proliferation in the TF-1 human erythroleukemic cells. The ED50 range is )
LIFR alpha, Active Protein (Cat# AAA48367)
Full Name
Recombinant Mouse LIFR alpha Protein
Applications
Bioactivity, SDS-PAGE
Purity
>90% by SDS-PAGE
Pricing
Bacterial Outer Membrane Protein-A, Active Protein (Cat# AAA38518)
Full Name
Recombinant Bacterial Outer Membrane Protein-A
Purity
Greater than 98.0% as determined by: (a) Analysis by SEC-HPLC. (b) Analysis by SDS-PAGE.
Pricing
Fibroblast Growth Factor-basic, Active Protein (Cat# AAA38112)
Full Name
Recombinant Human Fibroblast Growth Factor-basic
Gene Names
FGF2; BFGF; FGFB; FGF-2; HBGF-2
Purity
Greater than 98.0% as determined by SDS-PAGE
Pricing
Granulocyte Macrophage-Colony Stimulating Factor, Active Protein (Cat# AAA38116)
Full Name
Recombinant Mouse Granulocyte Macrophage-Colony Stimulating Factor
Gene Names
Csf2; Csfgm; GMCSF; Gm-CSf; MGI-IGM
Purity
Greater than 98.0% as determined by
(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.
(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.
Pricing
Growth Hormone, Active Protein (Cat# AAA38125)
Full Name
Recombinant Human Growth Hormone Binding Protein; GHBP Human
Gene Names
GHR; GHBP; GHIP
Purity
Greater than 98.0% as determined by: (a) Analysis by SEC-HPLC. (b) Analysis by SDS-PAGE.
Pricing
Tumor Necrosis Factor-alpha, Active Protein (Cat# AAA38134)
Full Name
Recombinant Mouse Tumor Necrosis Factor-alpha
Gene Names
Tnf; DIF; Tnfa; TNF-a; TNFSF2; Tnfsf1a; TNFalpha; TNF-alpha
Purity
Greater than 97.0% as determined by: (a) Analysis by RP-HPLC. (c) Analysis by SDS-PAGE.
Pricing
Visfatin, Active Protein (Cat# AAA38155)
Full Name
Recombinant Human Visfatin
Gene Names
NAMPT; VF; PBEF; PBEF1; VISFATIN; 1110035O14Rik
Purity
Greater than 90.0% as determined by SDS-PAGE.
Pricing
Erythropoietin-alpha Fc/Chimera, Active Protein (Cat# AAA38158)
Full Name
Recombinant Human Erythropoietin-alpha Fc/Chimera
Gene Names
EPO; EP; MVCD2
Purity
Greater than 98.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
Pricing
Thrombopoietin, Active Protein (Cat# AAA38170)
Full Name
Recombinant Mouse Thrombopoietin
Gene Names
Thpo; Ml; Tpo; Mgdf; Mpllg
Purity
Greater than 95.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
Pricing
Interleukin-2, Active Protein (Cat# AAA38183)
Full Name
Recombinant Rat Interleukin-2
Purity
Greater than 95.0% as determined by SDS-PAGE.
Pricing
Fibroblast Growth Factor-basic, Active Protein (Cat# AAA38184)
Full Name
Recombinant Mouse Fibroblast Growth Factor-basic
Gene Names
Fgf2; Fgfb; bFGF; Fgf-2
Purity
Greater than 95.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
Pricing
Granulocyte-Colony Stimulating Factor, Active Protein (Cat# AAA38194)
Full Name
Recombinant Mouse Granulocyte-Colony Stimulating Factor
Gene Names
Csf3; Csfg; G-CSF; MGI-IG
Purity
Greater than 95.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
Pricing
Urease, Active Protein (Cat# AAA38249)
Full Name
Recombinant Urease
Gene Names
URE; F12B7.10; F12B7_10; URE; urease
Purity
Greater than 90.0% as determined by SDS-PAGE
Pricing
Pyrococcus Fruriosus Deoxyuridine Triphosphatase, Active Protein (Cat# AAA38252)
Full Name
Recombinant Pyrococcus Fruriosus Deoxyuridine Triphosphatase
Purity
Greater than 97.0% as determined by SDS-PAGE.
Pricing
Staphylokinase, Active Protein (Cat# AAA38257)
Full Name
Recombinant Staphylokinase
Purity
Greater than 97.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
Pricing
Kinase A Inactive holoenzyme type 1 alpha, Active Protein (Cat# AAA38385)
Full Name
Recombinant Protein Kinase A Inactive holoenzyme type 1 alpha
Purity
Greater than 95.0% as determined by SDS-PAGE.
Pricing
Tyrosine Phosphatase Non Receptor Type-6, Active Protein (Cat# AAA38392)
Full Name
Recombinant Human Protein Tyrosine Phosphatase Non Receptor Type-6
Gene Names
PTPN6; HCP; HCPH; SHP1; SHP-1; HPTP1C; PTP-1C; SHP-1L; SH-PTP1
Purity
Greater than 95.0% as determined by SDS-PAGE.
Pricing
Coagulation Factor VIII, Active Protein (Cat# AAA38429)
Full Name
Human Coagulation Factor VIII
Gene Names
F8; AHF; F8B; F8C; HEMA; FVIII; DXS1253E
Pricing
Coagulation Factor VIIa, Active Protein (Cat# AAA38434)
Full Name
Recombinant Human Coagulation Factor VIIa
Gene Names
F7; SPCA
Purity
Greater than 98.0% as determined by analysis by SDS-PAGE.
Pricing
Monocyte Chemotactic Protein-1, Active Protein (Cat# AAA38085)
Full Name
Recombinant Mouse Monocyte Chemotactic Protein-1 (CCL2)
Gene Names
Ccl2; JE; HC11; MCAF; MCP1; MCP-1; Scya2; Sigje; SMC-CF; AI323594
Purity
Greater than 90.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
Pricing
Erythropoietin-alpha, Active Protein (Cat# AAA38105)
Full Name
Recombinant Human Erythropoietin-alpha
Gene Names
EPO; EP; MVCD2
Purity
Greater than 98.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
Pricing
Interleukin-2, Active Protein (Cat# AAA38109)
Full Name
Recombinant Human Interleukin-2
Gene Names
IL2; IL-2; TCGF; lymphokine
Purity
Greater than 97.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
Pricing
Oxytocin, Active Protein (Cat# AAA38351)
Full Name
Human Oxytocin
Gene Names
OXT; OT; OT-NPI; OXT-NPI
Purity
Greater than 99.0% as determined by RP-HPLC.
Pricing
Creatine Kinase MB, Active Protein (Cat# AAA44790)
Full Name
Creatine Kinase MB (CK-MB), Human Heart
Gene Names
CKM; CKMM; M-CK
Purity
>= 98% (SDS-PAGE)
Pricing
Isocitrate Dehydrogenase, Active Protein (Cat# AAA44806)
Full Name
Isocitrate Dehydrogenase (ICDH), Porcine Heart - NADP
Pricing
Lactate Dehydrogenase, Active Protein (Cat# AAA44808)
Full Name
Lactate Dehydrogenase (LDH), Porcine Heart
Pricing
Lactate Dehydrogenase 1, Active Protein (Cat# AAA44809)
Full Name
Lactate Dehydrogenase 1 (LDH-1), Human Erythrocytes
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.