- A: alpha bundles
- X: VSG (variant surface glycoprotein) N-terminal domain and haptoglobin-hemoglobin receptor
- H: VSG (variant surface glycoprotein) N-terminal domain and haptoglobin-hemoglobin receptor
- T: VSG (variant surface glycoprotein) N-terminal domain and haptoglobin-hemoglobin receptor
- F: Trypan_glycop