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▼Recombinant Proteins
Recombinant proteins are purified laboratory reagents created through genetic engineering for advanced biomedical research, such as immunology, neuroscience, cancer research, and more.
We provide high-quality recombinant proteins. Our various protein products are carefully tested for consistent and reliable performance. With our proteins, we offer stringent quality control, lot-to-lot consistency, and precise specificity to help you achieve accurate results in your research.
Viewing 3600-3650 of 15249 product results
Flagellin (fliC), Recombinant Protein (Cat# AAA235206)
Prostate-specific antigen (PSA), Recombinant Protein (Cat# AAA235217)
Double homeobox protein 4 (DUX4), Recombinant Protein (Cat# AAA235220)
Cobalamin import system permease protein BtuC (btuC), Recombinant Protein (Cat# AAA235221)
Butyrophilin subfamily 1 member A1 (BTN1A1), Recombinant Protein (Cat# AAA235225)
C-C chemokine receptor type 9 (CCR9), Recombinant Protein (Cat# AAA235232)
Application Data
(Measured by its binding ability in a functional ELISA. Immobilized recombinant human EGF at 10 ug/ml (100 ul/well) can bind human EGFR with a linear range of 0.64-400 ng/ml.)
EGFR, Recombinant Protein (Cat# AAA257396)
>85% as determined by SEC-HPLC
Application Data
(Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED50 for this effect is typically 0.2-2 ng/ml.)
NGF, Recombinant Protein (Cat# AAA257435)
Application Data
(Measured by its binding ability in a functional ELISA. Immobilized human ACE2 protein (His tag) at 2ug/mL (100uL/well) can bind 2019-nCoV Spike Protein (RBD, rabbitFc Tag) (40592-V31H), the EC50 of 2019-nCoV Spike Protein (RBD, rabbitFc Tag) is 2.0-6.0 ng/mL.)
COVID 19 Spike Coronavirus, Recombinant Protein (Cat# AAA257461)
Application Data
ALPPL2/ALPG, Recombinant Protein (Cat# AAA259273)
= 90% as determined by SEC-HPLC.
WB (Western Blot)
(Histone Methyltransferase (HMT) Assay comparing Recombinant Polynucleosomes (H3.3) and histone octamers as substrates. 2 ug Recombinant Polynucleosomes (H3.3) were incubated with 0 ug , 0.25 ug, 0.5 ug and 1 ug NSD2-SET in reaction buffer for 3 hours at room temperature, respectively. Western Blot was used to detect the generation of reaction products (H3K36me2). NSD2-SET only and polynucleosomes only were used as negative control. The Western Blot result shows that polynucleosomes are more suitable substrate for NSD2 than histone octamers.)
Polynucleosomes, Recombinant Protein (Cat# AAA59702)
Application Data
(MTase-Glo Assay for Recombinant SETD6 protein methyltransferase activity 1 uM substrate peptide and 1 uM SAM were incubated with different concentrations of recombinant SETD6 protein in an 8 ul reaction system containing 50 mM Tris-HCl pH 8.6, 0.02% Triton X-100, 2 mM MgCl2, 1 mM TCEP for 1 hr. 5×MTase-Glo Reagent was added to the products and incubated for 30 min. Then MTase-Glo Detection was added and luminescence was read after another 30 min incubation. SAH standard curve (0-1 uM) was performed following the same protocol)
Application Data
(Recombinant IDO1 protein activity assay 400 uM L-tryptophan was incubated with different concentrations of IDO1 protein in reaction buffer mixture. The reaction was stopped by the addition of 40 ul 30% (w/v) trichloroacetic acid and heated at 65 degree C for 15 min. After cooling down to 4 degree C, the reaction was centrifuged at 1,125 g for 10 min. 100 ul supernatant was transferred into 96-well plate and mixed with 100 ul of 2% (w/v) p-DMAB. The yellow pigment derived from kynurenine was measured at 490 nm.)
IDO1, Recombinant Protein (Cat# AAA60111)
SDS-PAGE
(Tau Proteins: Representation of seven Tau proteins, from top to bottom: Tau-441, Tau-410, Tau-412, Tau-381, Tau-383, Tau-352 and Tau-316)
Tau-441 (P301L), Biotinylated, Recombinant Protein (Cat# AAA74048)
SDS-PAGE
(SDS-PAGE and Western Blot analysis using JO1 protein (His tag))
SDS-PAGE
CD63 antigen, Recombinant Protein (Cat# AAA113785)
NADPH--cytochrome P450 reductase (Por), Recombinant Protein (Cat# AAA113361)
Solute carrier family 2, facilitated glucose transporter member 1 (SLC2A1), Recombinant Protein (Cat# AAA113364)
Cornifin-A (SPRR1A), Recombinant Protein (Cat# AAA113387)
Lutropin/choriogonadotropin subunit beta (LHB), Recombinant Protein (Cat# AAA113395)
Branched-chain-amino-acid aminotransferase, cytosolic (Bcat1), Recombinant Protein (Cat# AAA113325)
CCAAT/enhancer-binding protein beta (Cebpb), Recombinant Protein (Cat# AAA113676)
Carbamoyl-phosphate synthase [ammonia], mitochondrial (Cps1), Recombinant Protein (Cat# AAA113583)
Hemoglobin subunit gamma-1 (HBG1), Recombinant Protein (Cat# AAA113566)
SDS-PAGE
Fibrinogen Like Protein 1 (FGL1), Recombinant Protein (Cat# AAA134693)
SDS-PAGE
Coagulation Factor VIII (F8), Recombinant Protein (Cat# AAA134293)
SDS-PAGE
Osteonectin (ON), Recombinant Protein (Cat# AAA134481)
SDS-PAGE
Gonadotropin Releasing Hormone (GnRH), Recombinant Protein (Cat# AAA134766)
adenovirus C serotype 5 DNA-binding protein (DBP), Recombinant Protein (Cat# AAA114575)
Peptidoglycan synthase FtsI (ftsI), Recombinant Protein (Cat# AAA115105)
Outer capsid protein VP4, partial, Recombinant Protein (Cat# AAA114705)
SDS-PAGE
Osteocalcin, Recombinant Protein (Cat# AAA114739)
NAD--protein ADP-ribosyltransferase modB (modB), Recombinant Protein (Cat# AAA114913)
E3 ubiquitin-protein ligase ICP0 (ICP0), Recombinant Protein (Cat# AAA114921)
Murein hydrolase activator EnvC (envC), Recombinant Protein (Cat# AAA114988)
Matrix protein (M), Recombinant Protein (Cat# AAA115999)
Cell surface lipoprotein MPB83 (mpb83), Recombinant Protein (Cat# AAA115806)
DNA polymerase theta (POLQ), Recombinant Protein (Cat# AAA115860)
SDS-PAGE
Fibulin 1 (FBLN1), Recombinant Protein (Cat# AAA134185)
Application Data
Interleukin 1 Beta (IL1b), Recombinant Protein (Cat# AAA133936)
T-cell leukemia/lymphoma protein 1A (Tcl1a), Recombinant Protein (Cat# AAA113200)
Lactase-phlorizin hydrolase (LCT), Recombinant Protein (Cat# AAA113251)
Pertussis toxin subunit 1 homolog (ptxA), Recombinant Protein (Cat# AAA117155)
Dystroglycan (DAG1), Recombinant Protein (Cat# AAA117161)
Flt3-interacting zinc finger protein 1 (FIZ1), Recombinant Protein (Cat# AAA117165)
Protein sprouty homolog 2 (Spry2), Recombinant Protein (Cat# AAA117011)
Nucleoporin NUP53 (NUP35), Recombinant Protein (Cat# AAA116795)
Adipocyte plasma membrane-associated protein (APMAP), Recombinant Protein (Cat# AAA116945)
BPI fold-containing family B member 1 (Bpifb1), Recombinant Protein (Cat# AAA116519)
SDS-PAGE
HTH-type quorum sensing-dependent transcriptional regulator vjbR (vjbR), Recombinant Protein (Cat# AAA116554)
What Are Recombinant Proteins?
A recombinant protein is created by inserting the gene of interest into a host system like E. coli, mammalian cells, or insect cells. This protein expression method results in the large-scale production of protein in a controlled environment with highly precise structures and functionality. Proteins produced via the “Recombinant” methodology have proven themselves crucial in various biological research areas, including immunology, neuroscience, cancer research, drug delivery and development, and more.
Core Recombinant Protein Product Lines:
- Human: Produced from human genes (e.g., growth factors, cytokines).
- Animal: Derived from mouse, rat, or other animals (e.g., mouse antibodies, enzymes).
- Bacterial: Produced in bacteria like E. coli (e.g., enzymes, bacterial toxins).
- Yeast: Produced in yeast cells (e.g., surface proteins, metabolic enzymes).
- Insect:Expressed in insect cells (e.g., viral proteins, glycoproteins).
- Viral: Derived from viral genomes (e.g., spike proteins for vaccine development).
How Does It Work?
- Gene Identification and Cloning: Scientists first find the exact gene that codes for the protein they are interested in producing, and then create a copy of said gene.
- Recombinant DNA Creation: The copied gene is then inserted into a vector (a vehicle-like plasmid) that can be transported safely into your intended expression host cell/system.
- Host Cell Transformation: The vector (with the foreign gene inside) is shuttled into a host cell. This host can be a bacterium (like E. coli), yeast, insect cells, or mammalian cells, depending on the type of protein or protein characteristics needed.
- Protein Expression: The host cell “reads” the copied gene that was shuttled into it, and begins to produce the gene’s coded-for protein using its own cellular machinery. The host can continue to multiply, and with each new cell, more protein is produced.
- Protein Purification: After enough protein has been made, scientists collect the host cell and separate out the target protein. The protein is then carefully purified so it is free of contaminants, ideally active, and also safe for use. Learn more in our guide on “factors affecting recombinant protein yield”.
The result is a purified recombinant protein, a lab-made protein that is biologically identical (in most respects) to the natural/native version.
We take this process a step further, offering recombinant proteins that are produced with precise control over sequence modifications, expression levels, and large-scale production. This ensures high-quality, consistent results that will be able to support your research needs and empower your scientific discoveries.
Some of the expression hosts/systems used in recombinant protein generation by AAA Biotech include:
- Escherichia coli (E. coli)
- Human (Homo sapiens)
- Chinese Hamster
- Yeast
- Insect cells (e.g., Baculovirus expression system)
Recombinant Protein Offerings
| S.No | Protein Expression Systems | Quality and Bioactivity | Formats and Flexibility |
|---|---|---|---|
| 01. | E. coli, HEK293, CHO, yeast, and insect cells | Validated high bioactivity and binding activity | Ready-to-use formats (lyophilized or liquid formulations available) |
| 02. | 675+ recombinant protein products | High protein purity (≥95%) | Available in flexible pack sizes |
| 03. | Custom protein production (His-tag, GST, FLAG, and Fc fusion) | Lot-to-lot consistency through QC protocols | Wide range of targets (Cytokines, growth factors, enzymes, receptors, signaling proteins, etc.) |
Applications Of Our Recombinant Proteins
- Studying protein interactions (protein–protein or protein–DNA).
- Testing biological pathways with functional/activity assays.
- Creating standard curves in ELISA and other tests, often supported by high-quality ELISA kits for accurate quantification.
- Making antigens/immunogens for antibody production.
- Drug discovery and screening.
- Finding and confirming biomarkers.
- Researching cell signaling and immunity.
- Developing vaccines.
Read more about the applications of the recombinant proteins here!
Why Buy Recombinant Proteins from AAA Biotech?
1. High Purity & Verified Quality:
Most of our proteins are ≥ 95% pure. We also test the biological activity of our products where it's relevant (it will be indicated on the product page).
2. Multiple Expression Systems:
We offer proteins made in multiple host systems, and this enables researchers to pick the system that gives them the best folding, post-translational modifications, or functionality for their experiment requirements.
3. Custom & Flexible Options:
Need a special tag (His, GST, FLAG, Fc fusion)? Or a custom variant? We can provide it. Our proteins come in formats that are lab-friendly: lyophilized (dry) or “ready-to-use” liquid.
4. Rigorous Quality Control & Documentation:
Every batch is backed by strong QC. This means you can rely on product consistency, two different batches will perform similarly.
5. Wide Variety & Global Availability:
We carry a large and growing catalog of recombinant proteins to cover almost all needs in research (immunology, oncology, vaccine work, etc.)
6. Researcher-Focused Support:
Technical support, clear documentation, and user-friendly product pages help you select the right protein for your work. Plus, our user-friendly packaging and handling, and global shipping are all designed to reduce delays, damage, and hassles.
Order Recombinant Proteins Today!
We are committed to supporting the research community with recombinant proteins that display exceptional performance and reliability. Our proteins are produced using industry-standard methods and are validated to meet the needs of academic, pharmaceutical, and biotechnology laboratories.
We have a track record of delivering proteins that work — large numbers of researchers rely on them in many published studies. Browse our catalog to find the perfect protein for your research applications now!
FAQ
1. What is involved in the purification of recombinant proteins?
The purification process of these recombinant proteins is performed to isolate the specific protein produced by the host cell from unwanted substances. The process generally includes techniques such as “affinity chromatography” to separate the protein from other proteins and impurities. AAA Biotech generally offers proteins ≥ 95% pure, depending on the protein type.
2. What are some examples of popular AAA Biotech recombinant proteins?
Some examples of recombinant proteins include:
Retinoblastoma Protein (Cat # AAA10852) – reportedly used in vaccine research and antibody development. Hepatitis B Surface Antigen (HBsAg) (Cat# AAA13446) – reportedly used in diagnostic tests and vaccine development for Hepatitis B. High-Mobility Group Box 1 (HMGB1) (Cat# AAA10851) – reportedly used in inflammation and immune response research.
3. How are AAA Biotech recombinant proteins validated?
Each batch undergoes stringent quality control checks, including SDS-PAGE analysis, endotoxin testing (for select products), and activity assaying (for select products). Certificates of Analysis are provided with every product (only upon request for some products).
4. Are your proteins suitable for therapeutic development or only research?
AAA Biotech recombinant proteins are strictly for research-use only and are not intended for diagnostic or therapeutic purposes in humans or animals.
5. What types of expression systems do you use for recombinant protein production?
The production labs use a variety of expression platforms, including bacterial (E. coli), yeast, insect (baculovirus), and mammalian (HEK293, CHO) systems. The expression system used depends on the complexity and intended function/use of the protein.