Immune Checkpoints
Browse by type, application, or key specifications such as purity, grade, packaging, and handling requirements.
103 products
Popular Products
- Recombinant Human IL-2 ProteinLyophilized Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. High Performance ? High-performance grade with optimized purity and performance characteristics. Use for sensitive analyses where ordinary grades fall short. His Tag ? His tag grade — recombinant protein bearing a His tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein. ≥95%(SDS-PAGE)In Stock Item #: rp147476View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- P60568
- Expression system
- CHO-K1
- Protein Day
- His
- Endotoxin Concentration
- <1.0 EU/μg
- Bioactivity
- 1、Measured in a cell proliferation assay using CTLL‑2 mouse cytotoxic T cells. The ED50 for this effect is typically less than 2.5 ng/mL. 2、Measured in a cell proliferation assay using mouse splenocytes. The ED50 for this effect is typically less than 30.0 ng/mL.
- Synonyms
- IL-2 | T-cell growth factor | TCGF
- Recombinant Human TNF RII/TNFRSF1B ProteinLyophilized Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Low Endotoxin ? Low-endotoxin grade — endotoxin reduced to low controlled levels. Use in sensitive biological work where high endotoxin would interfere. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. His Tag ? His tag grade — recombinant protein bearing a His tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein. GST Tag ? GST tag grade — recombinant protein bearing a GST tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein. ≥95%(SDS-PAGE)In Stock Item #: rp152522View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- P20333
- Expression system
- E. coli
- Protein Day
- N-His & GST
- Endotoxin Concentration
- <1.0 EU/mg
- Bioactivity
- The binding activity of TNFRSF1B and TNFa, the EC50 was 0.0470~0.085 μg/ml.
- Synonyms
- CD120b antigen | CD120b | Etanercept | p75 TNF receptor | p75TBPII | p75TNFR | soluble TNFR1B variant 1 | TNF RII | T...
- Recombinant Human 4-1BB Ligand ProteinLyophilized Animal Free ? Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material. Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. PBS Only ? PBS-only formulation — supplied in phosphate-buffered saline with no other additives. Use when you need a clean PBS buffer free of stabilizers/carriers. ≥95%(SDS-PAGE)In Stock Item #: rp142386View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- P41273
- Expression system
- E. coli
- Protein Day
- No tag
- Endotoxin Concentration
- <1.0 EU/μg
- Bioactivity
- Fully biologically active when compared to standard. The ED50 as determined by stimulation of IL-8 production using human PBMC is less than 10 ng/ml.
- Synonyms
- 41BB Ligand | 4-1BB Ligand | 4-1BBL | 4-1BB-L | CD137L | homolog of mouse 4-1BB-L | receptor 4-1BB ligand | TNFSF9 | ...
- Recombinant Human CD80 ProteinLyophilized Animal Free ? Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material. Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. His Tag ? His tag grade — recombinant protein bearing a His tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein. ≥95%(SDS-PAGE)In Stock Item #: rp144122View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- P33681
- Expression system
- HEK293
- Protein Day
- N-His
- Endotoxin Concentration
- <1.0 EU/μg
- Bioactivity
- Measured by its binding activity of recombinant human CD80 and recombinant human CD86. The EC50 for this effect is less than 0.412μg/mL.
- Synonyms
- Activation B7-1 antigen | B7 | BB1 | CTLA-4 counter-receptor B7.1
- Recombinant Human Nectin-3 ProteinLyophilized Animal Free ? Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material. Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. His Tag ? His tag grade — recombinant protein bearing a His tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein. ≥98%(SDS-PAGE)In Stock Item #: rp149161View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- Q9NQS3
- Expression system
- HEK293
- Protein Day
- C-His
- Endotoxin Concentration
- <1.0 EU/μg
- Bioactivity
- Recombinant Human Nectin-3 Protein is a human protein of the immunoglobulin superfamily which forms part of adherens junctions. Human PVRL1/NECTIN1 hFc has been identified as an interactor of Nectin-3, thus a binding ELISA assay was conducted to detect the interaction of recombinant human Nectin-3 and recombinant PVRL1/NECTIN1 hFc.
- Synonyms
- CDw113 | Nectin cell adhesion molecule 3 | Poliovirus receptor-related protein 3
- Recombinant Mouse IL-2 ProteinLyophilized Animal Free ? Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material. Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. High Performance ? High-performance grade with optimized purity and performance characteristics. Use for sensitive analyses where ordinary grades fall short. His Tag ? His tag grade — recombinant protein bearing a His tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein. ≥98%(SDS-PAGE)In Stock Item #: rp154174View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Mouse
- Accession #
- P04351
- Expression system
- HEK293
- Protein Day
- N-His
- Endotoxin Concentration
- <1.0 EU/μg
- Bioactivity
- Recombinant Mouse IL-2 stimulates cell proliferation of the CTLL-2 mouse cytotoxic T cell line. The ED50 for this effect is typically less than 2.5 ng/mL.
- Synonyms
- Aldesleukin | IL2 | IL-2 | IL-2lymphokine | interleukin 2 | interleukin-2 | involved in regulation of T-cell clonal e...
- Recombinant Human Nectin-2/CD112 ProteinLyophilized Animal Free ? Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material. Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. PBS Only ? PBS-only formulation — supplied in phosphate-buffered saline with no other additives. Use when you need a clean PBS buffer free of stabilizers/carriers. ≥95%(SDS-PAGE)In Stock Item #: rp149154View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- Q92692
- Expression system
- HEK293
- Protein Day
- No tag
- Endotoxin Concentration
- <1.0 EU/μg
- Bioactivity
- Recombinant Human Nectin-2/CD112 Protein is a human protein of the immunoglobulin superfamily which forms part of adherens junctions. Human DNAM-1/CD226 hFc has been identified as an interactor of Nectin-2, thus a binding ELISA assay was conducted to detect the interaction of recombinant human Nectin-2 and recombinant DNAM-1/CD226 hFc.
- Synonyms
- CD112 antigen | CD112 | Herpes virus entry mediator B | Herpesvirus entry mediator B | herpesvirus entry protein B | ...
- Recombinant Human HVEM/TNFRSF14 ProteinLyophilized Animal Free ? Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material. Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. High Performance ? High-performance grade with optimized purity and performance characteristics. Use for sensitive analyses where ordinary grades fall short. Fc tag ? Fc tag grade — recombinant protein bearing a Fc tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein. The Fc tag aids dimerization and protein-A/G capture. ≥95%(SDS-PAGE&HPLC)In Stock Item #: rp152533View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- Q92956
- Expression system
- Pichia pastoris
- Protein Day
- C-hFc
- Endotoxin Concentration
- <0.1 EU/μg
- Bioactivity
- Fully biologically active when compared to standard. The biologically active as determined by its ability to inhibit TNF-beta -mediated cytotoxicity using murine L929 cells.
- Synonyms
- ATAR | CD270 antigen | CD270 | CD40-like protein | Herpes virus entry mediator A | Herpesvirus entry mediator A | Hve...
- Recombinant Human IL-10 ProteinLyophilized Animal Free ? Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material. Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. High Performance ? High-performance grade with optimized purity and performance characteristics. Use for sensitive analyses where ordinary grades fall short. ≥95%(SDS-PAGE)In Stock Item #: rp147355View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- P22301
- Expression system
- E. coli
- Protein Day
- No tag
- Endotoxin Concentration
- <1.0 EU/μg
- Bioactivity
- 1. Measured in a cell proliferation assay using MC/9-2 mouse mast cells. The ED₅₀ for this effect is typically 1.0 - 8.0 ng/mL. 2. Immobilized Recombinant Human IL-10 Protein (rp147355) at 2 μg/mL can bind Recombinant Rhesus IL10RA Protein (Fc Tag) the EC₅₀ for this effect is 100.0 - 300.0 ng/mL.
- Synonyms
- CSIF | CSIFMGC126450 | Cytokine synthesis inhibitory factor | GVHDS | IL10 | IL-10 | IL10A | IL-10MGC126451 | interle...
- Recombinant Human CD40 Ligand/TNFSF5 ProteinLyophilized Animal Free ? Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material. Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. PBS Only ? PBS-only formulation — supplied in phosphate-buffered saline with no other additives. Use when you need a clean PBS buffer free of stabilizers/carriers. ≥95%(SDS-PAGE&HPLC)In Stock Item #: rp152636View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- P29965
- Expression system
- E. coli
- Protein Day
- No tag
- Endotoxin Concentration
- <1.0 EU/μg
- Bioactivity
- Fully biologically active when compared to standard. The ED50 as determined by the dose-dependent stimulation of IL-8 production by human PBMC is less than 5-10 ng/ml.
- Synonyms
- CD154 antigen | CD154 | CD40 antigen ligand | CD40 Ligand | CD40L | CD40-L | CD40LG | CD40LIGM | gp39 | hCD40L | HIGM...
- Recombinant Human CD30-L ProteinLyophilized Animal Free ? Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material. Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. High Performance ? High-performance grade with optimized purity and performance characteristics. Use for sensitive analyses where ordinary grades fall short. His Tag ? His tag grade — recombinant protein bearing a His tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein. ≥95%(SDS-PAGE)In Stock Item #: rp143950View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- P32971
- Expression system
- HEK293
- Protein Day
- N-His
- Endotoxin Concentration
- <0.1 EU/μg
- Bioactivity
- Measured by its ability to stimulate IL-6 secretion by HDLM human Hodgkin’s lymphoma cells. The ED50 for this effect is 8-48 ng/mL in the presence of 10 µg/mL of a cross-linking antibody, Mouse Anti-polyHistidine Monoclonal Antibody.
- Synonyms
- CD153 antigen; CD153; CD30 antigen ligand; CD30 Ligand; CD30L; CD30-L; CD30LCD30 ligand; CD30LGMGC138144; TNFSF8; tum...
- Recombinant Human B7-H2 ProteinLyophilized Animal Free ? Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material. Carrier Free ? Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays. Bioactive ? Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure. ActiBioPure™ ? ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required. Azide Free ? Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory. His Tag ? His tag grade — recombinant protein bearing a His tag for affinity purification/detection. Use to purify, immobilize, or detect the tagged protein. ≥95%(SDS-PAGE)In Stock Item #: rp147187View ProductPricing & Pack Sizes
Technical Identifiers
- Species
- Human
- Accession #
- O75144
- Expression system
- HEK293
- Protein Day
- C-His
- Endotoxin Concentration
- <0.01 EU/μg
- Bioactivity
- Immobilized Human ICOSLG at 1 μg/mL (100 μL/well) can bind Human ICOS/CD278 with a linear range of 2-15 ng/mL.
- Synonyms
- B7H2 | B7-H2 | B7H2B7 homolog 2 | B7-H2B7-related protein 1 | B7RP-1 | B7RP1B7-like protein Gl50 | LICOS | CD275 anti...
Fast Shipping Same-day shipping on in-stock items
Technical Details Quality & specification info on every product page
Pack Size Options Multiple packaging sizes with pricing access from listing
R&D Use Only Products supplied for research and development use







