Number of Protein Chains:3
- Classes: Small proteins
 - Folds: Snake toxin-like
 - Superfamilies: Snake toxin-like
 - Families: Extracellular domain of cell surface receptors
 
Protein Domains:
- BMP receptor Ia ectodomain
 - Type II activin receptor
 - Urokinase plasminogen activator surface receptor uPAR
 - automated matches
 
	* [ ] : Polypeptide  - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
	
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
