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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.


At AAA Biotech, also known as AAA Bio or AAABio, 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.


Whether you're conducting research on cell expansion, polarization, differentiation, or cell processing, we can offer the exact recombinant proteins you need in order to support your work.


Viewing 5900-5950 of 10000 product results


product-image-AAA60389_AD11.jpg Application Data (HTRF assay for EPHA5 (620-1037) activity 1 uM TK substrate was incubated with different concentrations of EPHA5 (620-1037) protein in a 10 ul reaction system containing 1×Enzymatic Buffer, 5 mM MgCl2,1mM MnCl2, 1 mM DTT, 5nM SEB and 100 uM ATP for 1 hour. Then 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.)

EPHA5, Recombinant Protein (Cat# AAA60389)

Full Name
Recombinant EPHA5 (620-1037) protein
Pricing
product-image-AAA60390_AD11.jpg Application Data (HTRF assay for EPHB2 (570-987) activity 1 uM TK substrate was incubated with different concentrations of EPHB2 (570-987) protein in a 10 ul reaction system containing 1×Enzymatic Buffer, 5 mM MgCl2,1 mM MnCl2, 1 mM DTT, 5nM SEB and 100 uM ATP for 1 hour. Then 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.)

EPHB2, Recombinant Protein (Cat# AAA60390)

Full Name
Recombinant EPHB2 (570-987) protein
Pricing
product-image-AAA60394_AD13.jpg Application Data (AMP-Glo assay for UBE2D3 activity 7.9uM ubiquitin,63 nM UBA1 and 25uM ATP were incubated with different concentrations of UBE2D3 in 10ul reaction system containing 40 mM Tris-HCl pH 7.4, 20 mM MgCl2, 0.5 mM DTT, 0.1 mg/ml BSA at 37? for 1 hour. 10ul of AMP-Glo Reagent I was added to the reaction and incubated for 1 hour at room temperature. Then 20ul of AMP-Glo Detection Solution was added and luminescence was read after another 30 min incubation.)

UBE2D3, Recombinant Protein (Cat# AAA60394)

Full Name
Recombinant UBE2D3 protein
Purity
>=95% by SDS-PAGE.
Pricing

CRP, Recombinant Protein (Cat# AAA59078)

Full Name
CRP Protein (Active)
Applications
ELISA
Purity
>95% by SDS-PAGE
Pricing

Cytokeratin 19, CK19, Recombinant Protein (Cat# AAA59081)

Full Name
Cytokeratin 19, CK19 Protein (Active)
Applications
SDS-PAGE, ELISA
Purity
>95% by SDS-PAGE
Pricing

Cytokeratin 20, CK20, Recombinant Protein (Cat# AAA59082)

Full Name
Cytokeratin 20, CK20 Protein (Active)
Applications
SDS-PAGE, ELISA
Purity
>95% by SDS-PAGE
Pricing
product-image-AAA55954_SDS_PAGE15.jpg SDS-PAGE

MFG-E8, Recombinant Protein (Cat# AAA55954)

Full Name
Recombinant Human MFG-E8 Protein
Gene Names
MFGE8; BA46; HMFG; MFGM; SED1; hP47; EDIL1; MFG-E8; SPAG10; OAcGD3S; HsT19888
Purity
> 90 % as determined by SDS-PAGE.
Pricing
product-image-AAA120517_BIOACTIVITY13.jpg Bioactivity (Detects Human CD360/IL21R Antibody (18A5) in indirect ELISAs.)

CD360/IL21R, Recombinant Protein (Cat# AAA120517)

Full Name
Recombinant Human CD360/IL21R, C-His
Gene Names
IL21R; NILR; CD360
Applications
Western Blot
Purity
>90% as determined by SDS-PAGE
Pricing
product-image-AAA120581_BIOACTIVITY13.jpg Bioactivity (Detects Human VAP-1/AOC3 Antibody (TK8-14) in indirect ELISAs.)

AOC3/VAP-1, Recombinant Protein (Cat# AAA120581)

Full Name
Recombinant Human AOC3/VAP-1 Protein, C-His
Gene Names
AOC3; HPAO; SSAO; VAP1; VAP-1
Applications
Western Blot
Purity
>90% as determined by SDS-PAGE
Pricing
product-image-AAA120467_BIOACTIVITY13.jpg Bioactivity (Detects Human CD95/FAS Antibody in indirect ELISAs.)

CD95/FAS, Recombinant Protein (Cat# AAA120467)

Full Name
Recombinant Human CD95/FAS, C-His
Gene Names
FAS; APT1; CD95; FAS1; APO-1; FASTM; ALPS1A; TNFRSF6
Applications
Western Blot
Purity
>90% as determined by SDS-PAGE
Pricing
product-image-AAA120489_BIOACTIVITY11.jpg Bioactivity (Detects Human IL2 Antibody in indirect ELISAs.)

IL2, Recombinant Protein (Cat# AAA120489)

Full Name
Recombinant Human IL2, C-His
Gene Names
IL2; IL-2; TCGF; lymphokine
Applications
Western Blot
Purity
>93% as determined by SDS-PAGE
Pricing
product-image-AAA120439_BIOACTIVITY13.jpg Bioactivity (Detects cT84.66 in indirect ELISAs.)

CD66e/CEA/CEACAM5, Recombinant Protein (Cat# AAA120439)

Full Name
Recombinant Human CD66e/CEA/CEACAM5, C-His
Gene Names
CEACAM5; CEA; CD66e
Applications
Western Blot
Purity
>90% as determined by SDS-PAGE
Pricing
product-image-AAA120455_BIOACTIVITY13.jpg Bioactivity (Detects Human CD121a/IL1R1 Antibody (27F2) in indirect ELISAs.)

CD121a/IL1R1, Recombinant Protein (Cat# AAA120455)

Full Name
Recombinant Human CD121a/IL1R1, C-Fc
Gene Names
IL1R1; P80; IL1R; IL1RA; CD121A; D2S1473; IL-1R-alpha
Applications
Western Blot
Purity
>90% as determined by SDS-PAGE
Pricing
product-image-AAA60139_AD11.jpg Application Data (HTRF assay for FAK protein activity 1 uM TK substrate was incubated with increasing concentrations of FAK protein and 100 uM ATP in reaction buffer for 1 hour. The detection reagents were added and incubated with the reactions for 1 hr. TK antibody was used to detect the products. All operations and reactions were performed at room temperature, and HTRF KinEASE TK assay was used to detect the enzymatic activity.)

FAK, Recombinant Protein (Cat# AAA60139)

Full Name
Recombinant FAK protein
Gene Names
PTK2; FAK; FADK; FAK1; FRNK; PPP1R71; p125FAK; pp125FAK
Pricing
product-image-AAA59632_AD11.jpg Application Data

Sortase A5, Recombinant Protein (Cat# AAA59632)

Full Name
Recombinant Sortase A5 protein
Pricing
product-image-AAA59636_AD13.jpg Application Data (EZH2 complex activity assay. Recombinant EZH2 activity measured using a fluorescent histone H3 lysine 27 methyltransferase assay.)

EZH2, Recombinant Protein (Cat# AAA59636)

Full Name
Recombinant EZH2 protein complex
Pricing
product-image-AAA59641_AD11.jpg Application Data (HTRF Assay for Recombinant KAT2B / PCAF (715-829) protein activity. 3 uM histone peptide H4K5/K8/K12/K16 (4ac) was incubated with KAT2B / PCAF (715-829) protein in reaction buffer including 50 mM HEPES-NaOH pH 7.0, 0.1% BSA for 1 hour at room temperature, Anti-DYKDDDDK antibody was used to detect reaction products.)

KAT2B/PCAF, Recombinant Protein (Cat# AAA59641)

Full Name
Recombinant KAT2B/PCAF (715-829) protein
Purity
The recombinant protein is >90% pure by SDS-PAGE.
Pricing
product-image-AAA59642_AD13.jpg Application Data (Recombinant p300 (1041-1161) activity using AlphaScreen. p300 (1041-1161) titration and inhibition were assessed using an AlphaScreen assay. Titration curves were generated to show signal response in the presence of modified peptide substrate at increasing protein concentrations. This data was generated and kindly provided courtesy of ChemPartner.)

p300, Recombinant Protein (Cat# AAA59642)

Full Name
Recombinant p300 (1041-1161) protein
Purity
The recombinant protein is >90% pure by SDS-PAGE.
Pricing
product-image-AAA59655_AD11.jpg Application Data (MALDI-TOF for PRC2 EZH2 (Y641N) activity.3.3 uM H3K27me2 peptide was incubated with 40 nM PRC2 EZH2 (Y641N) complex in reaction buffer for 3 hours at room temperature. Activity was detected by MALDI-TOF.Catalytic Ability:80 turnovers / enzyme molecule.)

PRC2 EZH2, Recombinant Protein (Cat# AAA59655)

Full Name
Recombinant PRC2 EZH2 (Y641N) complex
Gene Names
EZH2; WVS; ENX1; EZH1; KMT6; WVS2; ENX-1; EZH2b; KMT6A
Purity
The recombinant protein is >92% pure by SDS-PAGE.
Pricing
product-image-AAA59678_AD11.jpg Application Data (HTRF assay for JMJD1B / KDM3B activity 3.3 uM H3K9me2 peptide was incubated with different concentrations of JMJD1B / KDM3B protein in a 10 ul reaction system containing 50 mM HEPES pH 7.5, 1 mM TCEP, 0.02% Triton X100, 100 uM 2-oxoglutarate, 100 uM ascorbate, 50 ?M (NH4)2Fe(SO4)2·6H2O and for 1 hours at room temperature, then 10 ?l of H3K9me0 antibody and SA-XL665 mixture (1:100 dilution in the same buffer) was added to each reaction system and incubated for 30 min. All the operations and reactions were performed at room temperature. HTRF assay was used for detection.)

JMJD1B/KDM3B, Recombinant Protein (Cat# AAA59678)

Full Name
Recombinant JMJD1B/KDM3B protein
Gene Names
KDM3B; 5qNCA; NET22; C5orf7; JMJD1B
Purity
The recombinant protein is >85% pure by SDS-PAGE.
Pricing
product-image-AAA59712_AD11.jpg Application Data (Recombinant BRDT (257-382) HTRF activity assay. 3.3 uM histone peptide H4K5/8/12/16(4Ac) was incubated with BRDT (257-382) protein in reaction buffer including 50 mM HEPES-NaOH pH 7.0, 0.1% BSA for 1 hour at room temperature. Anti-GST antibody was used to detect reaction products.)

BRDT, Recombinant Protein (Cat# AAA59712)

Full Name
Recombinant BRDT (257-382), GST-Tag
Gene Names
BRDT; CT9; BRD6
Purity
The recombinant protein is >90% pure by SDS-PAGE.
Pricing
product-image-AAA59719_AD11.jpg Application Data (Recombinant KMT2D (MLL2) complex MALDI-TOF activity assay 3.3 uM H3K4me0 peptide was incubated with 10 nM KMT2D (MLL2) complex in reaction buffer for 3 hours at room temperature. The reaction product was detected by MALDI-TOF. Single 3.3 uM H3K4me0 peptide was used as negative control. Catalytic Ability: ~450 turnovers/ enzyme molecule)

KMT2D, Recombinant Protein (Cat# AAA59719)

Full Name
Recombinant KMT2D (MLL2) complex
Gene Names
KMT2D; ALR; KMS; MLL2; MLL4; AAD10; KABUK1; TNRC21; CAGL114
Purity
The recombinant protein is >80% pure by SDS-PAGE.
Pricing
product-image-AAA59727_AD13.jpg Application Data (Recombinant HDAC6 (597-728, deleted mutant) protein activity assay. 3 ?M H3K9ac (1-21) peptides was incubated with different concentrations of HDAC6 (597-728, deleted mutant) in reaction buffer for 30 minutes at 37 degree C followed by developing for 30 minutes at room temperature.)

HDAC6, Recombinant Protein (Cat# AAA59727)

Full Name
Recombinant HDAC6 (597-728, deleted mutant) protein
Gene Names
HDAC6; HD6; JM21
Purity
The recombinant protein is >80% pure by SDS-PAGE.
Pricing
product-image-AAA59756_DB13.jpg DB (Dot Blot) (Dot blot for Recombinant FTO protein activity 1 ?M m6A ssDNA oligos (sequence: 5’-GTTGCCTGTTCGTGTTGG/m6A/CTTGCCTGT-3’) were incubated with different concentrations of FTO in reaction buffer including 25 mM Tris-HCl pH 7.5, 100 ?M 2-oxoglutarate, 100 ?M ascorbate, 50 ?M (NH4)2Fe(SO4)2·6H2O and 1 mM TCEP for 2 hr at room temperature. The 20 ?l reactions were concentrated to 5 ?l. 1 ?l of products were spotted onto positively charged nylon membrane, then detected with m6A antibody . Dot blot was used for activity detection.)

FTO, Recombinant Protein (Cat# AAA59756)

Full Name
Recombinant FTO protein
Pricing
product-image-AAA60179_AD13.jpg Application Data (MALDI-TOF for Recombinant PHD3 (EGLN3) protein, DYKDDDDK-Tag 3 ?M HIF1A peptide was incubated with 300 nM PHD3 protein in 30 ?l reaction system containing 20 mM Tris-HCl pH 7.5, 5 mM KCl, 1.5 mM MgCl2, 1 mM DTT, 100 ?M 2-oxoglutarate, 100 ?M ascorbate and 50 ?M (NH4)2Fe(SO4)2·6H2O for 2 hours at 30 degree C. MALDI-TOF was used for detection.)

PHD3, Recombinant Protein (Cat# AAA60179)

Full Name
Recombinant PHD3 (EGLN3) protein, DYKDDDDK-Tag
Gene Names
EGLN3; PHD3; HIFPH3; HIFP4H3
Pricing
product-image-AAA60206_AD11.jpg Application Data (HTRF assay for JAK2 (532-1132, V617F) activity 1 uM TK substrate was incubated with different concentrations of JAK2 (532-1132, V617F) protein in 10 ul reaction system containing 1×Enzymatic Buffer, 5 mM MgCl2, 1 mM DTT and 100 uM ATP for 1 hour. The detection reagents were added and incubated with the reactions for 1 hr. All the operations and reactions were performed at room temperature, and HTRF KinASE TK assay was used to detect the enzymatic activity.)

JAK2, Recombinant Protein (Cat# AAA60206)

Full Name
Recombinant JAK2 (532-1132, V617F) protein
Gene Names
JAK2; JTK10; THCYT3
Pricing

Norovirus GII.4 Virus-like Particles (VLP, Recombinant Protein (Cat# AAA58297)

Full Name
Norovirus GII.4 Virus-like Particles (VLP) Recombinant
Applications
Lateral Flow
Purity
Infected Trichoplusia ni cells are lysed and centrifuged and then the soluble extract containing the VLPs is dialyzed against Phosphate Buffered Saline.
Pricing

Interleukin-15 (IL-15), Recombinant Protein (Cat# AAA58751)

Full Name
Interleukin-15 (IL-15)
Gene Names
IL15; IL-15
Purity
>95% by SDS-PAGE
Pricing

Peroxisom Proliferator-Acivated Receptor Gamma (PPAR-g), Recombinant Protein (Cat# AAA58759)

Full Name
Peroxisom Proliferator-Acivated Receptor Gamma (PPAR-g)
Gene Names
PPARG; GLM1; CIMT1; NR1C3; PPARG1; PPARG2; PPARgamma
Purity
>95%
Pricing
product-image-AAA72840_AD13.jpg Application Data

OspC, Recombinant Protein (Cat# AAA72840)

Full Name
OspC recombinant
Purity
0.95
Pricing
product-image-AAA72862_AD11.jpg Application Data (This plot shows an indirect IgG ELISA assay performed with the ChimChagas2 recombinant antigen. the optical density at 450/620 nm for high-positive sera(dark blue), low-positive sera (light blue)and negative sera(gray) are displayed in the graphic)

ChimChagas2, Recombinant Protein (Cat# AAA72862)

Full Name
Recombinant chimeric antigen ChimChagas2 for Trypanosoma cruzi
Purity
>98% in a SDS-PAGE
Pricing
product-image-AAA72869_AD13.jpg Application Data (This protein does not contain any Trp residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient. Therefore, we have meassured the protein concentration by using the colorimetric assay based on the interaction between Coomassie brilliant blue and the arginine and aromatic residues (Bradford Method) and its maximum absorption shifts from 470 nm to 595 nm. The standard curve was performed with the protein BSA. 40 ul of the protein were analysed.DO595 = 0.557)

Art v 3, Recombinant Protein (Cat# AAA72869)

Full Name
Recombinant allergen Art v 3 for Artemisia vulgaris (Mugwort pollen)
Purity
15% SDS-PAGE
Pricing
product-image-AAA72870_AD13.jpg Application Data (This protein does not contain any Trp residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient. Therefore, we have meassured the protein concentration by using the colorimetric assay based on the interaction between Coomassie brilliant blue and the arginine and aromatic residues (Bradford Method) and its maximum absorption shifts from 470 nm to 595 nm. The standard curve was performed with the protein BSA. 40 ul of the protein were analysed.DO595 = 0.571)

Bet v 1, Recombinant Protein (Cat# AAA72870)

Full Name
Recombinant allergen Bet v 1 for Betula verrucosa (European white birch)
Purity
15% SDS-PAGE
Pricing
product-image-AAA72871_AD13.jpg Application Data (This protein does not contain any Trp residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient. Therefore, we have meassured the protein concentration by using the colorimetric assay based on the interaction between Coomassie brilliant blue and the arginine and aromatic residues (Bradford Method) and its maximum absorption shifts from 470 nm to 595 nm. The standard curve was performed with the protein BSA. 40 ul of the protein were analysed.DO595 = 0.593)

Bet v 4, Recombinant Protein (Cat# AAA72871)

Full Name
Recombinant allergen Bet v 4 for Betula verrucosa (European white birch)
Purity
17% SDS-PAGE
Pricing
product-image-AAA72874_SDS_PAGE15.jpg SDS-PAGE (SDS-PAGE analysis (15%) of 1 ul of recombinant lipL21. Purity is >95% as determined by gel electrophoresis)

LipL21, Recombinant Protein (Cat# AAA72874)

Full Name
Recombinant antigen LipL21 for Leptospira interrogans
Pricing
product-image-AAA72889_SDS_PAGE15.jpg SDS-PAGE (The purity was determined to be >95% by densitometry. Approx. MW 58kDa)

CDK1, Recombinant Protein (Cat# AAA72889)

Full Name
CDK1, Unactive recombinant protein
Gene Names
CDK1; CDC2; CDC28A; P34CDC2
Purity
>95%
Pricing
product-image-AAA72915_AD15.jpg Application Data (The purity of VLK was determined to be ~75% by densitometryApprox MW 69 kDa)

VLK, Recombinant Protein (Cat# AAA72915)

Full Name
VLK recombinant protein
Gene Names
PKDCC; Vlk; SGK493
Purity
~75%
Pricing
product-image-AAA72953_AD13.jpg Purity Info (The purity of BRAF (G466VV) protein was determined to be >80% by densitometry, approx. MW is 69 kDa)

BRAF, Recombinant Protein (Cat# AAA72953)

Full Name
BRAF Mutant (G466V) Protein
Gene Names
BRAF; NS7; B-raf; BRAF1; RAFB1; B-RAF1
Applications
Kinase Assay
Purity
>80%
Pricing
product-image-AAA72957_AD13.gif Application Data

RNF130-BRAF, Recombinant Protein (Cat# AAA72957)

Full Name
RNF130-BRAF Mutant (Rex3Bex9), Active
Gene Names
RNF130; GP; G1RZFP; GOLIATH
Applications
Kinase Assay
Pricing
product-image-AAA72975_AD13.gif Application Data

COMT, Recombinant Protein (Cat# AAA72975)

Full Name
COMT, Active
Gene Names
COMT; HEL-S-98n
Applications
Methyltransferase Assay
Pricing
product-image-AAA72980_AD13.gif Application Data

DNMT3A, Recombinant Protein (Cat# AAA72980)

Full Name
DNMT3A, Active
Gene Names
DNMT3A; TBRS; DNMT3A2; M.HsaIIIA
Applications
Methyltransferase Assay
Pricing
product-image-AAA72981_AD13.gif Application Data

EHMT1, Recombinant Protein (Cat# AAA72981)

Full Name
EHMT1 (KMT1D), Active
Gene Names
EHMT1; GLP; GLP1; KMT1D; FP13812; EUHMTASE1; Eu-HMTase1; bA188C12.1
Applications
Methyltransferase Assay
Pricing
product-image-AAA73077_AD13.gif Application Data (The purity of AMPK was determined to be >75% by densitometry, approximate MW ~69kDa (A2), ~38 kDa (B1), and ~40kDa (G1).)

AMPK, Recombinant Protein (Cat# AAA73077)

Full Name
AMPK (A2/B1/G1), Active
Gene Names
PRKAA2; AMPK; AMPK2; PRKAA; AMPKa2
Purity
>75%
Pricing
product-image-AAA73089_AD13.gif Application Data

PIP4K2B, Recombinant Protein (Cat# AAA73089)

Full Name
PIP4K2B, Active
Gene Names
PIP4K2B; PI5P4KB; PIP5K2B; PIP5KIIB; PIP5P4KB; PIP5KIIbeta
Applications
Kinase Assay
Pricing
product-image-AAA73132_AD13.gif Application Data

SMYD2, Recombinant Protein (Cat# AAA73132)

Full Name
SMYD2 (KMT3C), Active
Gene Names
SMYD2; KMT3C; HSKM-B; ZMYND14
Applications
Methyltransferase Assay
Pricing
product-image-AAA73134_AD13.gif Application Data

SUV39H2, Recombinant Protein (Cat# AAA73134)

Full Name
SUV39H2 (KMT1B), Active
Gene Names
SUV39H2; KMT1B
Applications
Methyltransferase Assay
Pricing
product-image-AAA73142_AD13.jpg Application Data (The purity of SIRT6 was determined to be >90% by densitometry. Approx. MW 39kDa.)

SIRT6, Recombinant Protein (Cat# AAA73142)

Full Name
SIRT6, Active
Gene Names
SIRT6; SIR2L6
Purity
>90%
Pricing
product-image-AAA73010_AD13.gif Application Data

LRRK2, Recombinant Protein (Cat# AAA73010)

Full Name
LRRK2 Mutant (G2385R), Active
Gene Names
LRRK2; PARK8; RIPK7; ROCO2; AURA17; DARDARIN
Applications
Kinase Assay
Pricing
product-image-AAA73058_AD13.gif Application Data

PI3K, Recombinant Protein (Cat# AAA73058)

Full Name
PI3K (p110 alpha (N345K (/p85 alpha), Active
Gene Names
PIK3CA; MCM; CWS5; MCAP; PI3K; CLOVE; MCMTC; PI3K-alpha; p110-alpha
Applications
Kinase Assay
Pricing
product-image-AAA73059_AD13.gif Application Data

PI3K, Recombinant Protein (Cat# AAA73059)

Full Name
PI3K (p110 alpha (E542K)/p85 alpha, Active
Gene Names
PIK3CA; MCM; CWS5; MCAP; PI3K; CLOVE; MCMTC; PI3K-alpha; p110-alpha
Applications
Kinase Assay
Pricing

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.

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)

Advantages Of Our Recombinant Proteins:


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.

  • 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.


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