diff --git a/mop.owl b/mop.owl
index bf7f961..dca84c4 100644
--- a/mop.owl
+++ b/mop.owl
@@ -1894,7 +1894,7 @@
     <!-- http://purl.obolibrary.org/obo/MOP_0000029 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/MOP_0000029">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/MOP_0000458"/>
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/MOP_0000028"/>
         <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Formation of a covalent bond between a substrate and an univalent carboacyl group.</obo:IAO_0000115>
         <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">univalent carboacylation</oboInOwl:hasExactSynonym>
         <oboInOwl:id rdf:datatype="http://www.w3.org/2001/XMLSchema#string">MOP:0000029</oboInOwl:id>
@@ -10409,7 +10409,7 @@
     <!-- http://purl.obolibrary.org/obo/MOP_0000479 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/MOP_0000479">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/MOP_0000800"/>
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/MOP_0000458"/>
         <rdfs:subClassOf>
             <owl:Restriction>
                 <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/BFO_0000057"/>
diff --git a/rxno.owl b/rxno.owl
index 90e6fdf..923a6a4 100644
--- a/rxno.owl
+++ b/rxno.owl
@@ -3667,31 +3667,6 @@
     
 
 
-    <!-- http://purl.obolibrary.org/obo/MOP_0000003 -->
-
-    <owl:Class rdf:about="http://purl.obolibrary.org/obo/MOP_0000003">
-        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/MOP_0000479"/>
-        <rdfs:subClassOf>
-            <owl:Restriction>
-                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/BFO_0000057"/>
-                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/CHEBI_42485"/>
-            </owl:Restriction>
-        </rdfs:subClassOf>
-        <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Formation of a covalent bond between a substrate and a formyl group.</obo:IAO_0000115>
-        <oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">formylation</oboInOwl:hasExactSynonym>
-        <oboInOwl:hasOBONamespace rdf:datatype="http://www.w3.org/2001/XMLSchema#string">RXNO</oboInOwl:hasOBONamespace>
-        <oboInOwl:id rdf:datatype="http://www.w3.org/2001/XMLSchema#string">MOP:0000003</oboInOwl:id>
-        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">formylation</rdfs:label>
-    </owl:Class>
-    <owl:Axiom>
-        <owl:annotatedSource rdf:resource="http://purl.obolibrary.org/obo/MOP_0000003"/>
-        <owl:annotatedProperty rdf:resource="http://purl.obolibrary.org/obo/IAO_0000115"/>
-        <owl:annotatedTarget rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Formation of a covalent bond between a substrate and a formyl group.</owl:annotatedTarget>
-        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">RSC:xp</oboInOwl:hasDbXref>
-    </owl:Axiom>
-    
-
-
     <!-- http://purl.obolibrary.org/obo/MOP_0000339 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/MOP_0000339">