Topic summary
Heterotrimeric
Extracted from the Wikipedia article Protein trimer.
A homotrimer would be formed by three identical molecules. A heterotrimer would be formed by three different macromolecules. Type II Collagen is an example of homotrimeric protein, while Type I collagen is an AAB-type heterotrimeric protein. An example of viral protein homotrimeric protein is mammarenavirus of Z matrix protein.