C5L2, or Complement component 5a receptor 2, is a human gene encoded by C5AR2. It may also be known as: C5a anaphylatoxin chemotactic receptor 2; G-protein coupled receptor 77; GPF77; GPR77. The encoded protein has an amino acid length of 337 and a mass of 36.1 kDa. Other isoforms may exist. C5L2 is a member of the G-protein coupled receptor 1 family. Homologs of this gene exist in other organisms, including: Mouse, Rat.