diff --git a/ippisite/ippidb/models/__init__.py b/ippisite/ippidb/models/__init__.py
index cbd8934a2713994d395be5fcfaea77c5ed7834a5..48700d1ea9c62c992881ed1d3b3334f7fc2405a7 100644
--- a/ippisite/ippidb/models/__init__.py
+++ b/ippisite/ippidb/models/__init__.py
@@ -61,8 +61,10 @@ __all__ = [
     Protein,
     Domain,
     ProteinDomainComplex,
+    ProteinDomainBoundComplexGroup,
     ProteinDomainBoundComplex,
     ProteinDomainPartnerComplex,
+    ProteinDomainPartnerComplexGroup,
     Ppi,
     PpiComplex,
     PpiFamily,