1. Recombinant Proteins
  2. Immune Checkpoint Proteins
  3. Inhibitory Checkpoint Molecules
  4. B7-H3

B7 homolog 3 (B7-H3, also named CD276) is a type I transmembrane protein that belongs to the B7-CD28 family. It is conserved in mice and humans, with ~88% amino acid identity. B7-H3 is widely expressed in both lymphoid and nonlymphoid organs at the transcriptional level, but the expression of B7-H3 protein is more restricted to cell types such as activated dendritic cells (DCs), monocytes, T cells, B cells, and NK cells. B7-H3 acts as a co-stimulatory/co-inhibitory immunoregulatory molecule in the immune system. As a co-stimulatory molecule, B7-H3 stimulates the T cell response and IFN-γ production. Several current studies reported that B7-H3 potently inhibits T cell proliferation and IFN-γ, IL-2, IL-10, and IL-13 production. The receptor for B7-H3 has not yet been identified and it may explain the intricate immunomodulatory activity of B7-H3. More importantly, B7-H3 plays an important role in tumor immune evasion and metastasis. It is commonly overexpressed in multiple malignancies including melanoma, NSCLC, prostate, pancreatic, ovarian, and CRC.

Cat. No. Product Name / Synonyms Species Source
  • HY-P70652
    CD276/B7-H3 Protein, Human (433a.a, HEK293, His)

    CD276; B7H34Ig-B7-H3; B7-H3; B7 homolog 3; CD276 antigen; CD276 molecule; Costimulatory molecule

    Human HEK293
    CD276/B7-H3 protein can regulate T cell-mediated immune responses and act as a protective factor for tumor cells by inhibiting natural killer-mediated cell lysis. It also functions as a neuroblastoma cell marker, plays a role in acute and chronic transplant rejection, and modulates lymphocyte activity at mucosal surfaces. CD276/B7-H3 Protein, Human (433a.a, HEK293, His) is the recombinant human-derived CD276/B7-H3 protein, expressed by HEK293 , with C-6*His labeled tag. The total length of CD276/B7-H3 Protein, Human (433a.a, HEK293, His) is 433 a.a., with molecular weight of 65-90 kDa.
  • HY-P78074
    CD276/B7-H3 Protein, Human (Biotinylated, HEK293, His-Avi)

    B7-H3; CD276; PSEC0249;  4Ig-B7-H3; UNQ309; PRO352; B7 homolog 3; CD276

    Human HEK293
    CD276/B7-H3 protein can regulate T cell-mediated immune responses and act as a protective factor for tumor cells by inhibiting natural killer-mediated cell lysis. It also functions as a neuroblastoma cell marker, plays a role in acute and chronic transplant rejection, and modulates lymphocyte activity at mucosal surfaces. CD276/B7-H3 Protein, Human (Biotinylated, HEK293, His-Avi) is the recombinant human-derived CD276/B7-H3 protein, expressed by HEK293 , with C-Avi, C-His labeled tag. The total length of CD276/B7-H3 Protein, Human (Biotinylated, HEK293, His-Avi) is 435 a.a., with molecular weight of 70-80 kDa.
  • HY-P78930
    CD276/B7-H3 Protein, Human (Biotinylated, HEK293, Fc-Avi)

    B7-H3; CD276; B7 homolog 3

    Human HEK293
    CD276/B7-H3 Protein may regulate T-cell-mediated immune responses, acting as a protective factor in tumor cells by inhibiting natural-killer-mediated cell lysis. It also serves as a neuroblastoma cell marker and plays a role in acute and chronic transplant rejection, regulating lymphocytic activity at mucosal surfaces. Crucially, CD276/B7-H3 may provide an immunologically suitable environment for the placenta and fetus during pregnancy. Both isoforms modulate CD4 T-cell responses, with isoform 2 enhancing cytotoxic T-cells and selectively stimulating interferon-gamma production. Interaction with TREML2 enhances T-cell activation, highlighting CD276/B7-H3's diverse roles in immune regulation and cellular responses. CD276/B7-H3 Protein, Human (Biotinylated, HEK293, Fc-Avi) is the recombinant human-derived CD276/B7-H3 protein, expressed by HEK293, with C-Avi, C-hFc labeled tag. The total length of CD276/B7-H3 Protein, Human (Biotinylated, HEK293, Fc-Avi) is 217 a.a., with molecular weight of 63-70 kDa.
  • HY-P701302
    FITC-Labeled CD276/B7-H3 Protein, Human (435a.a, HEK293, Fc)

    4Ig-B7-H3; B7-H3; CD276; PSEC0249; UNQ309; PRO352; B7 homolog 3

    Human HEK293
    CD276/B7-H3 protein can regulate T cell-mediated immune responses and act as a protective factor for tumor cells by inhibiting natural killer-mediated cell lysis. It also functions as a neuroblastoma cell marker, plays a role in acute and chronic transplant rejection, and modulates lymphocyte activity at mucosal surfaces. FITC-Labeled CD276/B7-H3 Protein, Human (435a.a, HEK293, Fc) is the recombinant human-derived FITC-Labeled CD276/B7-H3 protein, expressed by HEK293 , with Fc labeled tag. The total length of FITC-Labeled CD276/B7-H3 Protein, Human (435a.a, HEK293, Fc) is 435 a.a., with molecular weight of 95-115 kDa.
  • HY-P70125
    CD276/B7-H3 Protein, Cynomolgus (437a.a, HEK293, His)

    rCynCD276/B7-H3, His; CD276 antigen; CD276; B7 homolog 3; B7-H3; CD276; Cynomolgus CD276

    Cynomolgus HEK293
    CD276/B7-H3 protein can regulate T cell-mediated immune responses and act as a protective factor for tumor cells by inhibiting natural killer-mediated cell lysis. It also functions as a neuroblastoma cell marker, plays a role in acute and chronic transplant rejection, and modulates lymphocyte activity at mucosal surfaces. CD276/B7-H3 Protein, Cynomolgus (437a.a, HEK293, His) is the recombinant cynomolgus-derived CD276/B7-H3 protein, expressed by HEK293 , with C-6*His labeled tag. The total length of CD276/B7-H3 Protein, Cynomolgus (437a.a, HEK293, His) is 437 a.a., with molecular weight of 70-90 kDa.
  • HY-P70126
    CD276/B7-H3 Protein, Cynomolgus (437a.a, HEK293, Fc)

    rCynCD276/B7-H3, Fc; CD276 antigen; CD276; B7 homolog 3; B7-H3; CD276; Cynomolgus CD276 Molecule

    Cynomolgus HEK293
    CD276/B7-H3 protein can regulate T cell-mediated immune responses and act as a protective factor for tumor cells by inhibiting natural killer-mediated cell lysis. It also functions as a neuroblastoma cell marker, plays a role in acute and chronic transplant rejection, and modulates lymphocyte activity at mucosal surfaces. CD276/B7-H3 Protein, Cynomolgus (437a.a, HEK293, Fc) is the recombinant cynomolgus-derived CD276/B7-H3 protein, expressed by HEK293 , with C-hFc labeled tag. The total length of CD276/B7-H3 Protein, Cynomolgus (437a.a, HEK293, Fc) is 437 a.a., with molecular weight of 100-123 kDa.
  • HY-P74316
    CD276/B7-H3 Protein, Human (HEK293, C-His)

    B7H3; B7-H3B7 homolog 3; CD276; Costimulatory molecule

    Human HEK293
    CD276/B7-H3 protein can regulate T cell-mediated immune responses and act as a protective factor for tumor cells by inhibiting natural killer-mediated cell lysis. It also functions as a neuroblastoma cell marker, plays a role in acute and chronic transplant rejection, and modulates lymphocyte activity at mucosal surfaces. CD276/B7-H3 Protein, Human (HEK293, C-His) is the recombinant human-derived CD276/B7-H3 protein, expressed by HEK293 , with C-His labeled tag. The total length of CD276/B7-H3 Protein, Human (HEK293, C-His) is 433 a.a., with molecular weight of ~68 kDa.
  • HY-P7326
    CD276/B7-H3 Protein, Human (435a.a, HEK293, Fc)

    rHuB7-H3/ICOSLG, Fc Chimera; B7H3; B7 homolog 3; CD276

    Human HEK293
    CD276/B7-H3 Protein, Human (HEK293, Fc) is a polypeptide chain containing the C-termimal His tag produced in HEK293 cells. B7-H3 is an immune checkpoint from the B7 family of molecules.
  • HY-P7327
    CD276/B7-H3 Protein, Human (HEK293, His)

    rHuB7-H3/ICOSLG, His; B7H3; B7 homolog 3; CD276

    Human HEK293
    CD276/B7-H3 Protein, Human (HEK293, His) is a polypeptide chain containing the C-termimal His tag produced in HEK293 cells. B7-H3 is an immune checkpoint from the B7 family of molecules.
  • HY-P7639
    CD276/B7-H3 Protein, Mouse (HEK293, His)

    rMuB7-H3, His; CD276 antigen; CD276; B7 homolog 3; B7-H3; CD276

    Mouse HEK293
    CD276/B7-H3 Protein, Mouse (HEK293, His) is induced upon T cell activation. B7-H3 selectively increases the production of IFN-γ.
  • HY-P77578
    CD276/B7-H3 Protein, Human (217a.a, HEK293, Fc)

    B7H3; B7-H3; CD276; PSEC0249;  UNQ309; PRO352; B7 homolog 3; CD276

    Human HEK293
    CD276/B7-H3 protein can regulate T cell-mediated immune responses and act as a protective factor for tumor cells by inhibiting natural killer-mediated cell lysis. It also functions as a neuroblastoma cell marker, plays a role in acute and chronic transplant rejection, and modulates lymphocyte activity at mucosal surfaces. CD276/B7-H3 Protein, Human (217a.a, HEK293, Fc) is the recombinant human-derived CD276/B7-H3 protein, expressed by HEK293 , with C-hFc labeled tag. The total length of CD276/B7-H3 Protein, Human (217a.a, HEK293, Fc) is 217 a.a., with molecular weight of 60-70 kDa.
  • HY-P78391
    CD276/B7-H3 Protein, Human (HEK293, His-Avi)

    B7-H3; CD276; PSEC0249;  4Ig-B7-H3; UNQ309; PRO352; B7 homolog 3; CD276

    Human HEK293
    CD276/B7-H3 Protein may regulate T-cell-mediated immune responses, acting as a protective factor in tumor cells by inhibiting natural-killer-mediated cell lysis. It also serves as a neuroblastoma cell marker and plays a role in acute and chronic transplant rejection, regulating lymphocytic activity at mucosal surfaces. Crucially, CD276/B7-H3 may provide an immunologically suitable environment for the placenta and fetus during pregnancy. Both isoforms modulate CD4 T-cell responses, with isoform 2 enhancing cytotoxic T-cells and selectively stimulating interferon-gamma production. Interaction with TREML2 enhances T-cell activation, highlighting CD276/B7-H3's diverse roles in immune regulation and cellular responses. CD276/B7-H3 Protein, Human (HEK293, His-Avi) is the recombinant human-derived CD276/B7-H3 protein, expressed by HEK293, with C-Avi, C-His labeled tag. The total length of CD276/B7-H3 Protein, Human (HEK293, His-Avi) is 435 a.a., with molecular weight of 70-80 kDa.
  • HY-P700448
    CD276/B7-H3 Protein, Human (HEK293, Myc-hFc)

    CD276; CD276 molecule; CD276 antigen; B7 H3; B7H3; B7RP 2; B7 homolog 3; costimulatory molecule; B7-H3; B7RP-2; 4Ig-B7-H3;

    Human HEK293
    CD276/B7-H3 Protein may regulate T-cell-mediated immune responses, acting as a protective factor in tumor cells by inhibiting natural-killer-mediated cell lysis. It also serves as a neuroblastoma cell marker and plays a role in acute and chronic transplant rejection, regulating lymphocytic activity at mucosal surfaces. Crucially, CD276/B7-H3 may provide an immunologically suitable environment for the placenta and fetus during pregnancy. Both isoforms modulate CD4 T-cell responses, with isoform 2 enhancing cytotoxic T-cells and selectively stimulating interferon-gamma production. Interaction with TREML2 enhances T-cell activation, highlighting CD276/B7-H3's diverse roles in immune regulation and cellular responses. CD276/B7-H3 Protein, Human (HEK293, Myc-hFc) is the recombinant human-derived CD276/B7-H3 protein, expressed by HEK293, with C-Myc, C-hFc labeled tag. The total length of CD276/B7-H3 Protein, Human (HEK293, Myc-hFc) is 217 a.a., with molecular weight of 53.4 kDa.
  • HY-P700880
    CD276/B7-H3 Protein, Human (Biotinylated, HEK293, C-His-Avi)

    B7H3; B7-H3; CD276; PSEC0249;  UNQ309; PRO352; B7 homolog 3; CD276

    Human HEK293
    CD276/B7-H3 Protein may regulate T-cell-mediated immune responses, acting as a protective factor in tumor cells by inhibiting natural-killer-mediated cell lysis. It also serves as a neuroblastoma cell marker and plays a role in acute and chronic transplant rejection, regulating lymphocytic activity at mucosal surfaces. Crucially, CD276/B7-H3 may provide an immunologically suitable environment for the placenta and fetus during pregnancy. Both isoforms modulate CD4 T-cell responses, with isoform 2 enhancing cytotoxic T-cells and selectively stimulating interferon-gamma production. Interaction with TREML2 enhances T-cell activation, highlighting CD276/B7-H3's diverse roles in immune regulation and cellular responses. CD276/B7-H3 Protein, Human (Biotinylated, HEK293, C-His-Avi) is the recombinant human-derived CD276/B7-H3 protein, expressed by HEK293, with C-Avi, C-His labeled tag. The total length of CD276/B7-H3 Protein, Human (Biotinylated, HEK293, C-His-Avi) is 217 a.a., with molecular weight of 40-50 kDa.
  • HY-P77538
    CD276/B7-H3 Protein, Human (Biotinylated, HEK293, His)

    B7H3; B7-H3B7 homolog 3; CD276; Costimulatory molecule

    Human HEK293
    CD276/B7-H3 protein can regulate T cell-mediated immune responses and act as a protective factor for tumor cells by inhibiting natural killer-mediated cell lysis. It also functions as a neuroblastoma cell marker, plays a role in acute and chronic transplant rejection, and modulates lymphocyte activity at mucosal surfaces. CD276/B7-H3 Protein, Human (Biotinylated, HEK293, His) is the recombinant human-derived CD276/B7-H3 protein, expressed by HEK293 , with C-His labeled tag. The total length of CD276/B7-H3 Protein, Human (Biotinylated, HEK293, His) is 433 a.a., with molecular weight of ~73 kDa.
  • HY-P74314
    CD276/B7-H3 Protein, Rat (HEK293, His)

    B7H3; B7-H3B7 homolog 3; CD276; Costimulatory molecule

    Rat HEK293
    CD276/B7-H3 Protein regulates T-cell-mediated immune responses and transplant rejection. It also promotes bone formation, functioning at the bone-immune interface. Additionally, it activates immune responses against tumors, eliminating them through natural killer cells and CD8 T-cells. Its interaction with TREML2 enhances T-cell activation, highlighting its role in immune regulation. CD276/B7-H3 Protein, Rat (HEK293, His) is the recombinant rat-derived CD276/B7-H3 protein, expressed by HEK293 , with C-His labeled tag. The total length of CD276/B7-H3 Protein, Rat (HEK293, His) is 244 a.a., with molecular weight of ~43 kDa.
  • HY-P74315
    CD276/B7-H3 Protein, Rat (HEK293, Fc)

    B7H3; B7-H3B7 homolog 3; CD276; Costimulatory molecule

    Rat HEK293
    CD276/B7-H3 Protein regulates T-cell-mediated immune responses and transplant rejection. It also promotes bone formation, functioning at the bone-immune interface. Additionally, it activates immune responses against tumors, eliminating them through natural killer cells and CD8 T-cells. Its interaction with TREML2 enhances T-cell activation, highlighting its role in immune regulation. CD276/B7-H3 Protein, Rat (HEK293, Fc) is the recombinant rat-derived CD276/B7-H3 protein, expressed by HEK293 , with C-hFc labeled tag. The total length of CD276/B7-H3 Protein, Rat (HEK293, Fc) is 244 a.a., with molecular weight of ~61 kDa.
Cat. No. Product Name Effect Purity