Ultra-Low Endotoxin Recombinant Proteins

30 products

Low Endotoxin Proteins

Beta LifeScience offers a specialized collection of low and ultra-low endotoxin recombinant proteins designed to support sensitive downstream research applications. This collection includes biologically active cytokines, interleukins, growth factors, colony-stimulating factors, interferons, TNF-family proteins, receptors, cell therapy targets, and other recombinant proteins used in:

  • Immunology
  • Stem cell research
  • Oncology
  • Cell signaling
  • Antibody development
  • Preclinical studies

Many products in this collection are supplied with stringent endotoxin control, with selected proteins reaching <0.01 EU/µg or <0.001 EU/µg, as determined by the LAL method. These low-endotoxin specifications help reduce:

  • Endotoxin-related assay interference
  • Background inflammatory responses
  • Experimental variability in cell-based studies
  • Interference in animal immunization studies
  • Variability in ELISA, flow cytometry, and other bioanalytical workflows

The collection features recombinant proteins expressed in systems including E. coli and mammalian cell lines, with many products verified for high purity by SDS-PAGE and quantitative densitometry. Representative products include recombinant EPO, IL-4, IL-6, IL-15, IL-21, EGF, FGF2, GDF-15, GDNF, HGF, M-CSF, G-CSF, GM-CSF, IFN-γ, TNF-α, VEGF, R-Spondin, and additional research-use proteins.

Beta LifeScience low and ultra-low endotoxin recombinant proteins provide researchers with reliable, activity-tested reagents for experiments where protein purity, biological performance, and endotoxin control are critical.

Filters

    30 products
    Carrier effect of rHSA is observed in the cell proliferation in TF-1 human cells treated with Recombinant Human IL-3 in the presence of 25 µg/mL rHSA. The carrier effect due to rHSA does not alter the ED50 in this assay
    Recombinant Mouse Thrombopoietin/Tpo Protein, Active, Low Endotoxin
    • Molecule: THPO;
    • Species: Mouse;
    • Expression system: Mammalian;
    • Sequence: Ser22-Thr356;
    CAT#: BEP-0061UL
    Recombinant Human PDGF-AA (2 μg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing 14 kDa (R) and 29 kDa (NR) and purity greater than 98%.
    Recombinant Human PDGF-AA Protein, Active, Low Endotoxin
    • Molecule: PDGFA;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Ser87-Thr211;
    CAT#: BEP-0058UL
    Recombinant Human IL-13 (2 μg/lane) on SDSPAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 15 kDa and purity greater than 98%. and purity greater than 98%.
    Recombinant Human IL-13 Protein, Active, Low Endotoxin
    • Molecule: IL13;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Ser19-Asn132, with an N-terminal Met;
    CAT#: BEP-0056UL
    Recombinant Human R-Spondin 3/RSPO3 Protein, Active, Low Endotoxin
    • Molecule: RSPO3;
    • Species: Human;
    • Expression system: Mammalian;
    • Sequence: Asn23-His272;
    CAT#: BEP-0049UL
    Recombinant Human/Mouse BDNF Recombinant Human/Mouse BDNF (2 μg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 14 kDa and purity greater than 98%.
    Recombinant Human/Mouse/Rat BDNF Protein, Active, Low Endotoxin
    • Molecule: BDNF;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: His129-Arg247, with an N-terminal Met;
    CAT#: BEP-0048UL
    Recombinant Human/Mouse/Rat Activin A Protein , Active, Low Endotoxin
    • Molecule: INHBA;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Gly311-Ser426;
    CAT#: BEP-0047UL
    Recombinant Human TNF-alpha (2 μg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at about 15 kDa and purity >98%.
    Recombinant Human TNF-alpha Protein, Animal-Free, Active, Low Endotoxin
    • Molecule: TNF;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Val77-Leu233;
    CAT#: BEP-0046UL
    Recombinant Human SCF (2 μg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 15 kDa and purity greater than 98%.
    Recombinant Human SCF Protein, Active, Low Endotoxin
    • Molecule: KITLG;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Glu26-Ala189, with an N-terminal Met;
    CAT#: BEP-0045UL
    Recombinant Mouse IL-6 (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 24 kDa and purity greater than 96%.
    Recombinant Mouse IL-6 Protein, Active, Low Endotoxin
    • Molecule: IL6;
    • Species: Mouse;
    • Expression system: E.coli;
    • Sequence: Phe25-Thr211, with an N-terminal Met;
    CAT#: BEP-0038UL
    Recombinant Human FGF-10 (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 20 kDa and purity greater than 95%. Note: Coomassie Blue staining with this protein is weaker than expected.
    Recombinant Human FGF-10 Protein, Active, Low Endotoxin
    • Molecule: FGF10;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Cys37-Ser208, with an N-terminal Met;
    CAT#: BEP-0037UL
    Purified Nuclease (Lane 1: 0.5 μg, Lane 2: 2.0 μg) on SDS-PAGE under reducing conditions. The gel was stained using Coomassie® Blue showing a single band at 29 kDa and purity greater than 98-99%.
    Recombinant DNA/RNA Nuclease, Active, Low Endotoxin
    • Molecule: NucA;
    • Species: Serratia Marcescens;
    • Expression system: E.coli;
    • Sequence: Met1-Asn266;
    CAT#: BEP-0036UL
    Recombinant Mouse M-CSF/CSF1 Protein (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 26 kDa and purity greater than 97%.
    Recombinant Mouse M-CSF/CSF1 Protein, Active, Low Endotoxin
    • Molecule: CSF1;
    • Species: Mouse;
    • Expression system: E.coli;
    • Sequence: Lys33-Glu262, with an N-terminal Met;
    CAT#: BEP-0033UL
    Recombinant Mouse IFN-gamma (2 µg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 11 kDa and purity greater than 95%.
    Recombinant Mouse IFN-gamma Protein, Active, Low Endotoxin
    • Molecule: IFNG;
    • Species: Mouse;
    • Expression system: E.coli;
    • Sequence: His23-Cys155, with an N-terminal Met;
    CAT#: BEP-0030UL
    Recombinant Human VEGF 165 (2 ug/lane) on SDS-PAGE under reducing (R) and non-reducing (NR) conditions. The gel was stained using Coomassie® Blue showing single bands at 20 kDa (R) and 39 kDa (NR), and purity greater than 98%.
    Recombinant Human VEGF 165 Protein, Active, Low Endotoxin
    • Molecule: VEGFA;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Ala27-Arg191;
    CAT#: BEP-0028UL
    Recombinant Human Serum Albumin/HSA Protein, Animal Component-Free (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 67 kDa and purity greater than 98%.
    Recombinant Human Serum Albumin/HSA Protein, Animal-Free, Active, Low Endotoxin
    • Molecule: ALB;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Asp25-Leu609;
    CAT#: BEP-0026UL
    Carrier effect of rHSA is observed in the cell proliferation in TF-1 human cells treated with Recombinant Human IL-3 in the presence of 25 µg/mL rHSA. The carrier effect due to rHSA does not alter the ED50 in this assay
    Recombinant Human Serum Albumin/HSA Protein, Active, Low Endotoxin
    • Molecule: ALB;
    • Species: Human;
    • Expression system: Mammalian;
    • Sequence: Asp25-Leu609;
    CAT#: BEP-0025UL
    Recombinant Human IL-3 (2 µg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 15 kDa and purity greater than 98%.
    Recombinant Human IL-3 Protein, Active, Low Endotoxin
    • Molecule: IL3;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Ala20-Phe152;
    CAT#: BEP-0023UL
    Recombinant Human IL-21 (2 µg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 16 kDa and purity greater than 98%.
    Recombinant Human IL-21 Protein, Active, Low Endotoxin
    • Molecule: IL21;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Gln32-Ser162, with an N-terminal Met;
    CAT#: BEP-0022UL
    Recombinant Human IFN-gamma (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 16 kDa and purity greater than 97%.
    Recombinant Human IFN-gamma Protein, Active, Low Endotoxin
    • Molecule: IFNG;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Gln24-Gln166, with an N-terminal Met;
    CAT#: BEP-0021UL
    Recombinant Human G-CSF (2 µg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at approximately 17 kDa and purity greater than 97%.
    Recombinant Human G-CSF Protein, Active, Low Endotoxin
    • Molecule: CSF3;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Thr31-Pro204;
    CAT#: BEP-0020UL
    Recombinant Bovine Serum Albumin/BSA Protein, Animal Component-Free (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 67 kDa and purity greater than 98%.
    Recombinant Bovine Serum Albumin/BSA Protein, Animal-Free, Active, Low Endotoxin
    • Molecule: ALB;
    • Species: Bovine;
    • Expression system: E.coli;
    • Sequence: Asp25-Ala607;
    CAT#: BEP-0019UL
    Recombinant Bovine Serum Albumin/BSA Protein (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at ~81 kDa and purity greater than 98%. Identity confirmed by polyclonal anti-BSA antibody in Western blot.
    Recombinant Bovine Serum Albumin/BSA Protein, Active, Low Endotoxin
    • Molecule: ALB;
    • Species: Bovine;
    • Expression system: Mammalian;
    • Sequence: Asp25-Ala607;
    CAT#: BEP-0018UL
    Recombinant Human M-CSF (2 ug/lane) on SDS-PAGE under reducing (R) and non-reducing (NR) conditions. The gel was stained using Coomassie® Blue showing single bands at 43 kDa and 86 kDa, respectively, and purity greater than 97%.
    Recombinant Human M-CSF/CSF1 Protein, Active, Low Endotoxin
    • Molecule: CSF1;
    • Species: Human;
    • Expression system: Mammalian;
    • Sequence: Glu33-Arg255;
    CAT#: BEP-0017UL
    Recombinant Human KGF/FGF-7 (2 ug/lane) on SDSPAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a major band at 19 kDa and purity greater than >97%.
    Recombinant Human KGF/FGF-7 Protein, Active, Low Endotoxin
    • Molecule: FGF7;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Cys32-Thr194, with an N-terminal Met;
    CAT#: BEP-0016UL
    Recombinant Human IL-4 (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 15 kDa and purity greater than 97%.
    Recombinant Human IL-4 Protein, Active, Low Endotoxin
    • Molecule: IL4;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: His25-Ser153, with an N-terminal Met;
    CAT#: BEP-0015UL
    Recombinant Human sDLK-1 (2 μg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band around 40-45 kDa, and purity greater than 98%.
    Recombinant Human Soluble DLK-1 (sDLK-1) Protein, Active, Low Endotoxin
    • Molecule: DLK1;
    • Species: Human;
    • Expression system: Mammalian;
    • Sequence: Ala24-Ala304;
    CAT#: BEP-0008UL
    Recombinant Human EGF (W262 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 6 kDa and purity greater than 97%.
    Recombinant Human EGF Protein, Animal-Free, Active, Low Endotoxin
    • Molecule: EGF;
    • Species: Human;
    • Expression system: E.coli;
    • Sequence: Asn971-Arg1023, with an N-terminal Met;
    CAT#: BEP-0004UL
    Recombinant Mouse IL-4 (2 µg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band around 15 kDa and purity greater than 98%.
    Recombinant Mouse IL-4 Protein, Active, Low Endotoxin
    • Molecule: IL4;
    • Species: Mouse;
    • Expression system: E.coli;
    • Sequence: His23-Ser140, with an N-terminal Met;
    CAT#: BEP-0003UL
    Recombinant Human Hyper IL-6 (2 µg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue, showing a single band at 56-60 kDa and purity greater than 98%.
    Recombinant Human Hyper IL-6 Protein, Active, Low Endotoxin
    • Molecule: IL6R;
    • Species: Human;
    • Expression system: Mammalian;
    • Sequence: sIL6R (Val112-Ala323)-GSL-IL6（Val30-Met212）;
    CAT#: BEP-0002UL
    Recombinant Human EPO protein (2 μg/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band from 30-45 kDa and purity greater than 98%.
    Recombinant Human EPO Protein, Active, Low Endotoxin
    • Molecule: EPO;
    • Species: Human;
    • Expression system: Mammalian;
    • Sequence: Ala28-Arg193;
    CAT#: BEP-0001UL