C5a   Click here for help

GtoPdb Ligand ID: 573

Synonyms: C5a anaphylatoxin | complement component C5a | human complement protein
Immunopharmacology Ligand
Compound class: Endogenous peptide in human, mouse or rat
Comment: C5a is the ligand for the GPCR, C5a receptor (CD88) that is expressed by macrophages, neutrophils and endothelial cells. C5a is a potent inflammatory agent that is a key mediator involved in the pathogenesis of a number of inflammatory diseases involving the complement system (sepsis, rheumatoid arthritis, inflammatory bowel disease, systemic lupus erythemotosis and psoriasis for example).
Species: Human
Click here for help

Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

✖

View interactive charts of activity data across species
Natural/Endogenous Targets
Target
C3a receptor
C5a1 receptor
C5a2 receptor
Selectivity at GPCRs
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
C5a2 receptor Ligand is endogenous in the given species Hs Agonist Full agonist 8.9 pEC50 - 2
⤷ pEC50 8.9 (EC50 1.4x10-9 M) [2]
C5a1 receptor Hs Agonist Full agonist 8.0 – 9.0 pEC50 - 6,8
⤷ pEC50 8.0 – 9.0 (EC50 1x10-8 – 1x10-9 M) [6,8]
C5a1 receptor Ligand is endogenous in the given species Hs Agonist Full agonist 9.1 – 9.2 pIC50 - 4,8
⤷ pIC50 9.1 – 9.2 [4,8]
C5a2 receptor Ligand is endogenous in the given species Hs Agonist Full agonist 8.0 – 8.6 pIC50 - 2,7
⤷ pIC50 8.0 – 8.6 (IC50 9.5x10-9 – 2.5x10-9 M) [2,7]
Additional information and targets (data relate to human unless otherwise stated)
Description Data Reference
Potency order of endogenous ligands at C3a receptor C3a (C3, P01024) > C5a (C5, P01031) 1
Potency order of endogenous ligands at C5a1 receptor C5a (C5, P01031), C5a des-Arg (C5) > C3a (C3, P01024) 1
Ligand mentioned in the following text fields
Complement peptide receptors overview
Complement peptide receptors comments