Extended linker types in chemdict parser

modules/io/src/mol/chemdict_parser.cc

@@ -160,8 +160,12 @@ void ChemdictParser::InitTypeMap()
   if (!tm_.empty())
     return;
   tm_["L-PEPTIDE COOH CARBOXY TERMINUS"]=mol::ChemClass(mol::ChemClass::L_PEPTIDE_LINKING);
-  tm_["L-PEPTIDE NH3 AMINO TERMINUS"]=mol::ChemClass(mol::ChemClass::L_PEPTIDE_LINKING);   
+  tm_["L-PEPTIDE NH3 AMINO TERMINUS"]=mol::ChemClass(mol::ChemClass::L_PEPTIDE_LINKING);
+  tm_["L-GAMMA-PEPTIDE, C-DELTA LINKING"]=mol::ChemClass(mol::ChemClass::L_PEPTIDE_LINKING);
+  tm_["L-BETA-PEPTIDE, C-GAMMA LINKING"]=mol::ChemClass(mol::ChemClass::L_PEPTIDE_LINKING);
   tm_["D-PEPTIDE NH3 AMINO TERMINUS"]=mol::ChemClass(mol::ChemClass::D_PEPTIDE_LINKING);
+  tm_["D-BETA-PEPTIDE, C-GAMMA LINKING"]=mol::ChemClass(mol::ChemClass::D_PEPTIDE_LINKING);
+  tm_["D-GAMMA-PEPTIDE, C-DELTA LINKING"]=mol::ChemClass(mol::ChemClass::D_PEPTIDE_LINKING);
   tm_["L-SACCHARIDE 1,4 AND 1,4 LINKING"]=mol::ChemClass(mol::ChemClass::L_SACCHARIDE);
   tm_["D-SACCHARIDE 1,4 AND 1,4 LINKING"]=mol::ChemClass(mol::ChemClass::D_SACCHARIDE);
   tm_["L-SACCHARIDE"]=mol::ChemClass(mol::ChemClass::L_SACCHARIDE);