1. Recombinant Proteins
  2. Complement System
  3. Complement Innate Component
  4. Complement C5/C5a Protein, Human

Complement C5/C5a Protein, Human

Cat. No.: HY-P7864
Handling Instructions

Complement C5/C5a Protein, Human is a recombinant human complement C5a. C5a is a 74-amino acid glycoprotein generated on activation of the C system. Complement C5 is cleaved by proteolysis in the terminal phase of complement activation generating the pro-inflammatory C5a and membrane attack complex nucleator C5b. C5a is an inflammatory mediator generated by complement activation that positively regulates various arms of immune defense, including Toll-like receptor 4 (TLR4) signaling[1][2].

For research use only. We do not sell to patients.

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Size Price Stock Quantity
10 μg $115 In-stock
Estimated Time of Arrival: December 31
50 μg $345 In-stock
Estimated Time of Arrival: December 31
100 μg   Get quote  
250 μg   Get quote  

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Complement C5/C5a Protein, Human Related Classifications

  • Technical Parameters

  • Properties

  • Documentation




E. coli



P01031 (T678-R751)

Gene ID


rHuComplement C5/C5a; Complement C5; C5a anaphylatoxin; C5a
AA Sequence


Molecular Weight

Approximately 12.0 kDa


Greater than 95% as determined by reducing SDS-PAGE

Biological Activity
Data is not available.

Lyophilized powder.


Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.

Endotoxin Level

<1 EU/μg, determined by LAL method.


It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.

Storage & Stability

Stored at -20°C. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer. It is recommended to freeze aliquots at -20°C or -80°C for extended storage.


Room temperature in continental US; may vary elsewhere.


Complement component 5a (C5a) is a 74 amino acid glycoprotein and an important proinflammatory mediator that is cleaved enzymatically from its precursor, C5, on activation of the complement cascade. C5a is quickly metabolised by carboxypeptidases, forming the less-potent C5a desArg. C5a and C5a desArg interact with their receptors (C5aR and C5L2), which results in a number of effects which are essential to the immune response. C5a has a broad range of biological effects throughout the human body because the widespread expression of C5a receptors throughout the human organs enables C5a and C5a desArg to elicit a broad range of biological effects[2].

  • Reconstitution Calculator

  • Dilution Calculator

The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

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Complement C5/C5a Protein, Human
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