Recombinant human PD1 protein (Fc Chimera) is a Human Fragment protein, in the 25 to 167 aa range, expressed in HEK 293, with >90% purity and suitable for FuncS, SDS-PAGE.
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Key facts
- Purity
- >90% SDS-PAGE
- Expression system
- HEK 293 cells
- Tags
- Fc tag C-Terminus
- Applications
- FuncS, SDS-PAGE
- Biologically active
- Yes
Amino acid sequence
L D S P D R P W N P P T F S P A L L V V T E G D N A T F T C S F S N T S E S F V L N W Y R M S P S N Q T D K L A A F P E D R S Q P G Q D C R F R V T Q L P N G R D F H M S V V R A R R N D S G T Y L C G A I S L A P K A Q I K E S L R A E L R V T E R R A E V P T A H P S P S P R P A G Q F Q I E G R M D P K S C D K T H T C P P C P A P E L L G G P S V F L F P P K P K D T L M I S R T P E V T C V V V D V S H E D P E V K F N W Y V D G V E V H N A K T K P R E E Q Y N S T Y R V V S V L T V L H Q D W L N G K E Y K C K V S N K A L P A P I E K T I S K A K G Q P R E P Q V Y T L P P S R E E M T K N Q V S L T C L V K G F Y P S D I A V E W E S N G Q P E N N Y K T T P P V L D S D G S F F L Y S K L T V D K S R W Q Q G N V F S C S V M H E A L H N H Y T Q K S L S L S P G K
Reactivity data
| Application | Reactivity | Dilution info | Notes |
|---|---|---|---|
Application FuncS | Reactivity Reacts | Dilution info - | Notes - |
Application SDS-PAGE | Reactivity Reacts | Dilution info - | Notes ab198774 runs at a higher MW by SDS-PAGE due to glycosylation. |
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Target data
Function
Inhibitory receptor on antigen activated T-cells that plays a critical role in induction and maintenance of immune tolerance to self (PubMed:21276005). Delivers inhibitory signals upon binding to ligands CD274/PDCD1L1 and CD273/PDCD1LG2 (PubMed:21276005). Following T-cell receptor (TCR) engagement, PDCD1 associates with CD3-TCR in the immunological synapse and directly inhibits T-cell activation (By similarity). Suppresses T-cell activation through the recruitment of PTPN11/SHP-2: following ligand-binding, PDCD1 is phosphorylated within the ITSM motif, leading to the recruitment of the protein tyrosine phosphatase PTPN11/SHP-2 that mediates dephosphorylation of key TCR proximal signaling molecules, such as ZAP70, PRKCQ/PKCtheta and CD247/CD3zeta (By similarity). The PDCD1-mediated inhibitory pathway is exploited by tumors to attenuate anti-tumor immunity and escape destruction by the immune system, thereby facilitating tumor survival (PubMed:28951311). The interaction with CD274/PDCD1L1 inhibits cytotoxic T lymphocytes (CTLs) effector function (PubMed:28951311). The blockage of the PDCD1-mediated pathway results in the reversal of the exhausted T-cell phenotype and the normalization of the anti-tumor response, providing a rationale for cancer immunotherapy (PubMed:22658127, PubMed:25034862, PubMed:25399552).
Alternative names
CD279, PD1, PDCD1, Programmed cell death protein 1, Protein PD-1, hPD-1
Recommended products
Recombinant human PD1 protein (Fc Chimera) is a Human Fragment protein, in the 25 to 167 aa range, expressed in HEK 293, with >90% purity and suitable for FuncS, SDS-PAGE.
Key facts
- Purity
- >90% SDS-PAGE
- Expression system
- HEK 293 cells
- Tags
- Fc tag C-Terminus
- Applications
- FuncS, SDS-PAGE
- Biologically active
- Yes
- Biological activity
- PD-1-PD-L1 binding activity.
- Accession
- Q15116-1
- Animal free
- No
- Species
- Human
- Concentration
- Storage buffer
pH: 7.4
Constituents: 20% Glycerol (glycerin, glycerine), 0.64% Sodium chloride, 0.63% Tris HCl, 0.02% Potassium chloride
Sequence info
Amino acid sequence
- L D S P D R P W N P P T F S P A L L V V T E G D N A T F T C S F S N T S E S F V L N W Y R M S P S N Q T D K L A A F P E D R S Q P G Q D C R F R V T Q L P N G R D F H M S V V R A R R N D S G T Y L C G A I S L A P K A Q I K E S L R A E L R V T E R R A E V P T A H P S P S P R P A G Q F Q I E G R M D P K S C D K T H T C P P C P A P E L L G G P S V F L F P P K P K D T L M I S R T P E V T C V V V D V S H E D P E V K F N W Y V D G V E V H N A K T K P R E E Q Y N S T Y R V V S V L T V L H Q D W L N G K E Y K C K V S N K A L P A P I E K T I S K A K G Q P R E P Q V Y T L P P S R E E M T K N Q V S L T C L V K G F Y P S D I A V E W E S N G Q P E N N Y K T T P P V L D S D G S F F L Y S K L T V D K S R W Q Q G N V F S C S V M H E A L H N H Y T Q K S L S L S P G K
- Accession
- Q15116
- Protein length
- Fragment
- Predicted molecular weight
- 42.6 kDa
- Amino acids
- 25 to 167
- Nature
- Recombinant
- Tags
- Fc tag C-Terminus
Specifications
- Form
- Liquid
General info
- Function
Inhibitory receptor on antigen activated T-cells that plays a critical role in induction and maintenance of immune tolerance to self (PubMed:21276005). Delivers inhibitory signals upon binding to ligands CD274/PDCD1L1 and CD273/PDCD1LG2 (PubMed:21276005). Following T-cell receptor (TCR) engagement, PDCD1 associates with CD3-TCR in the immunological synapse and directly inhibits T-cell activation (By similarity). Suppresses T-cell activation through the recruitment of PTPN11/SHP-2: following ligand-binding, PDCD1 is phosphorylated within the ITSM motif, leading to the recruitment of the protein tyrosine phosphatase PTPN11/SHP-2 that mediates dephosphorylation of key TCR proximal signaling molecules, such as ZAP70, PRKCQ/PKCtheta and CD247/CD3zeta (By similarity).
- Post-translational modifications
Ubiquitinated at Lys-233 by the SCF(FBXO38) complex, leading to its proteasomal degradation (PubMed:30487606). Ubiquitinated via 'Lys-48'-linked polyubiquitin chains (PubMed:30487606).
Storage
- Shipped at conditions
- Dry Ice
- Appropriate short-term storage conditions
- -80°C
- Appropriate long-term storage conditions
- -80°C
- Storage information
- Avoid freeze / thaw cycle
This product is an active protein and may elicit a biological response in vivo, handle with caution.
Supplementary info
- This supplementary information is collated from multiple sources and compiled automatically.
- Activity summary
PD1 also known as Programmed Cell Death Protein 1 or PDCD1 is a transmembrane protein that plays a critical role in regulating immune responses. It has a mass of approximately 55 kDa. PD1 is expressed on the surface of T cells B cells and some myeloid cells. PD1’s expression increases upon activation of these immune cells assisting in maintaining peripheral tolerance. Researchers often use PD1 mouse models and chimeric antibodies to explore the function of PD1 for experimental purposes. Antibodies such as anti-PD1 such as EH12.2H7 help in blocking PD1 interaction to study its role further.
- Biological function summary
PD1 serves as an inhibitory receptor acting as a checkpoint in the immune system. It becomes part of an immune-suppressive complex when it binds with its ligands PD-L1 or PD-L2 which are expressed on various cell types including some tumor cells. This interaction suppresses the proliferation of T cells and cytokine production contributing to immune homeostasis. By controlling T cell activity PD1 limits autoimmunity but can also reduce the immune system's capability to attack cancer cells.
- Pathways
PD1 functions in the immune checkpoint pathway a critical regulatory circuit in immune regulation. The engagement of PD1 with its ligands initiates a cascade that inhibits the function and proliferation of T cells through downstream SHP-2 phosphatase activity. This pathway frequently involves other regulatory proteins like CTLA-4 and is an important mechanism by which the body modulates immune responses. Related pathways often intersect with those involving T cell receptor signaling and contribute to the overall modulation of immune activity.
- Associated diseases and disorders
PD1 has a significant role in cancer and autoimmune disorders. PD1 expression can allow tumors to evade immune surveillance making PD1 a target for cancer therapies such as anti-PD1 antibodies which aim to block PD1 and restore T cell activity. The interaction of PD1 with cancer-related proteins like PD-L1 facilitates tumor immune evasion. In autoimmune disorders PD1’s regulation of immune balance can become dysregulated leading to persistent immune activation and tissue damage. Understanding PD1 and its interaction with proteins such as PD-L1 helps in developing therapeutic strategies for both cancer and autoimmune conditions.
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2 product images
SDS-PAGE - Recombinant human PD1 protein (Fc Chimera) (ab198774)
4-20% SDS-PAGE analysis of ab198774 with Coomassie staining.
Lane 1: 2 μg ab198774
Lane 2: Protein markerab198774 runs at a higher MW by SDS-PAGE due to glycosylation.
Functional Studies - Recombinant human PD1 protein (Fc Chimera) (ab198774)
Activity assay using ab198774.
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