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Complement System

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The complement system helps or “complements” the ability of antibodies and phagocytic cells to clear pathogens from an organism. It is part of the immune system called the innate immune system that is not adaptable and does not change over the course of an individual's lifetime. The complement system consists of a number of small proteins found in the blood, in general synthesized by the liver, and normally circulating as inactive precursors (pro-proteins). When stimulated by one of several triggers, proteases in the system cleave specific proteins to release cytokines and initiate an amplifying cascade of further cleavages. The end-result of this activation cascade is massive amplification of the response and activation of the cell-killing membrane attack complex. Over 30 proteins and protein fragments make up the complement system. Three biochemical pathways activate the complement system: the classical complement pathway, the alternative complement pathway, and the lectin pathway.

Products Related to Complement System(69)

  • GC10449 structure
    GC10449PMX 205
    CAS: 514814-49-4
    Purity: >98%

    C5a receptor peptide antagonist

  • GC11328 structure
    GC11328Cyclosporine
    CAS: 59865-13-3
    Purity: >99.50%

    Cyclosporine (cyclosporin A), a immunosuppressive agent, inhibits phosphatase activity of calcineurin with IC50 value of 5 nM .

  • GC11800 structure
    GC11800SB 290157 (trifluoroacetate salt)
    CAS: 1140525-25-2
    Purity: >99.50%

    SB 290157 (trifluoroacetate salt) is a potent and selective C3a receptor antagonist with an IC50 of 200 nM.

  • GC12342 structure
    GC12342NDT 9513727
    CAS: 439571-48-9
    Purity: >99.00%

    C5a receptor (C5aR) competitive antagonist

  • GC15251 structure
    GC15251Compstatin
    CAS: 206645-99-0
    Purity: >98%

    Complement inhibitor

  • GC17129 structure
    GC17129W 54011
    CAS: 405098-33-1
    Purity: >98.00%

    C5a receptor antagonist

  • GC17263 structure
    GC17263Leukadherin 1
    CAS: 344897-95-6
    Purity: >98.00%

    CD11b/CD18 activator

  • GC17510 structure
    GC17510Compstatin control peptide
    CAS: 301544-78-5
    Purity: >98%

    control peptide for Compstatin, a complement inhibitor

  • GC31928 structure
    GC31928C3a 70-77 (Complement 3a (70-77))
    CAS: 63555-63-5
    Purity: >98%

    C3a 70-77 (Complement 3a (70-77)) is an octapeptide corresponding to the COOH terminus of C3a, exhibits the specificity and 1 to 2% biologic activities of C3a.

  • GC34434 structure
    GC34434PMX 205 Trifluoroacetate
    Purity: >98.00%

    PMX 205 Trifluoroacetate is a potent complement C5a receptor (C5aR; CD88) antagonist.

  • GC35481 structure
    GC35481BCX 1470
    CAS: 217099-43-9
    Purity: >98%

    BCX 1470 inhibits the esterolytic activity of factor D (IC50=96 nM) and C1s (IC50=1.6 nM), 3.4- and 200-fold better, respectively, than that of trypsin.

  • GC35482 structure
    GC35482BCX 1470 methanesulfonate
    CAS: 217099-44-0
    Purity: >99.50%

    BCX 1470 methanesulfonate inhibits the esterolytic activity of factor D (IC50=96 nM) and C1s (IC50=1.6 nM), 3.4- and 200-fold better, respectively, than that of trypsin.

  • GC35575 structure
  • GC35724 structure
    GC35724Complement C5-IN-1
    CAS: 2365402-67-9
    Purity: >98.00%

    Complement C5-IN-1 (Compound 7) is a small-molecule inhibitor of complement component 5 protein (C5).

  • GC36035 structure
    GC36035FD-IN-1
    CAS: 1646682-14-5
    Purity: >99.50%

    FD-IN-1 (Compound 12) is an orally bioavailable and selective factor D (FD) inhibitor with an IC50 of 12 nM.

  • GC36472 structure
    GC36472Iptacopan (LNP023)
    CAS: 1644670-37-0
    Purity: >98.00%

    LNP023 (LNP023) is a first-in-class, orally bioavailable, highly potent and highly selective factor B inhibitor with an IC50 value of 10 nM.

  • GC38162 structure
    GC38162Danicopan
    CAS: 1903768-17-1
    Purity: >99.50%

    Danicopan (ACH-4471), a selective and orally active small-molecule factor D inhibitor, shows high binding affinity to human Factor D with Kd value of 0.54 nM.

  • GC38880 structure
    GC38880(Z)-Leukadherin-1
    CAS: 2055362-72-4
    Purity: >98.00%

    (Z)-Leukadherin-1 (ADH-503 free base) is an orally active and allosteric CD11b agonist. (Z)-Leukadherin-1 leads to the repolarization of tumor-associated macrophages, reduction in the number of tumor-infiltrating immunosuppressive myeloid cells, and enhances dendritic cell responses.

  • GC39697 structure
    GC39697AMY-101
    CAS: 1427001-89-5
    Purity: >98.00%

    AMY-101 (Cp40) is the efficient inhibitor of the central complement component C3, with sub-nanomolar affinity for C3 (K D = 0.5nmol/L).

  • GC40775 structure
    GC40775Dexamethasone
    CAS: 50-02-2
    Purity: >98.00%

    Dexamethasone is a corticosteroid compound that has been used as an adjuvant to reduce postoperative pain.

  • GC50176 structure
    GC50176PMX 53
    CAS: 219639-75-5
    Purity: >99.50%

    PMX 53 is a potent, cell-permeable, and orally active C5a receptor (CD88) antagonist with an IC 50 value of 20nM.

  • GC50238 structure
    GC50238PMX 53c
    Purity: >98%

    Negative control for PMX 53

  • GC60040 structure
    GC60040ADH-503
    CAS: 2055362-74-6
    Purity: >95.00%

    ADH-503 ((Z)-Leukadherin-1 choline) is an orally active and allosteric CD11b agonist. ADH-503 leads to the repolarization of tumor-associated macrophages, reduction in the number of tumor-infiltrating immunosuppressive myeloid cells, and enhances dendritic cell responses.

  • GC60149 structure
    GC60149EG01377 dihydrochloride
    Purity: >98.00%

    EG01377 dihydrochloride is a potent, bioavailable and selective inhibitor of neuropilin-1 (NRP1), with a Kd of 1.32 μM, and IC50s of 609 nM for both NRP1-a1 and NRP1-b1. EG01377 dihydrochloride has antiangiogenic, antimigratory, and antitumor effects.