diff --git a/dhp-workflows/dhp-rdfconverter/src/main/java/eu/dnetlib/dhp/rdfconverter/bioschema/model/BioSchemaProtein.java b/dhp-workflows/dhp-rdfconverter/src/main/java/eu/dnetlib/dhp/rdfconverter/bioschema/model/BioSchemaProtein.java
index 962644c07..d9f123963 100644
--- a/dhp-workflows/dhp-rdfconverter/src/main/java/eu/dnetlib/dhp/rdfconverter/bioschema/model/BioSchemaProtein.java
+++ b/dhp-workflows/dhp-rdfconverter/src/main/java/eu/dnetlib/dhp/rdfconverter/bioschema/model/BioSchemaProtein.java
@@ -50,6 +50,8 @@ public class BioSchemaProtein {
 		private Link mainEntityOfPage;
 		@JsonProperty("https://schema.org/citation")
 		private Citation citation;
+		@JsonProperty("https://schema.org/hasSequenceAnnotation")
+		private SequenceAnnotation sequenceAnnotation;
 
 		public String getId() {
 			return id;
@@ -190,6 +192,14 @@ public class BioSchemaProtein {
 			this.mainEntityOfPage = mainEntityOfPage;
 		}
 
+		public SequenceAnnotation getSequenceAnnotation() {
+			return sequenceAnnotation;
+		}
+
+		public void setSequenceAnnotation(SequenceAnnotation sequenceAnnotation) {
+			this.sequenceAnnotation = sequenceAnnotation;
+		}
+
 		public Citation getCitation() {
 			return citation;
 		}
@@ -347,6 +357,65 @@ public class BioSchemaProtein {
 		}
 	}
 
+	public static class SequenceAnnotation {
+		@JsonProperty("https://schema.org/additionalProperty")
+		private List<AdditionalProperty> additionalProperty;
+
+		public List<AdditionalProperty> getAdditionalProperty() {
+			return additionalProperty;
+		}
+
+		public void setAdditionalProperty(List<AdditionalProperty> additionalProperty) {
+			this.additionalProperty = additionalProperty;
+		}
+	}
+
+	public static class AdditionalProperty {
+		@JsonProperty("https://schema.org/value")
+		private List<PropertyValue> propertyValue;
+
+		public List<PropertyValue> getPropertyValue() {
+			return propertyValue;
+		}
+
+		public void setPropertyValue(List<PropertyValue> propertyValue) {
+			this.propertyValue = propertyValue;
+		}
+	}
+
+	public static class PropertyValue {
+		@JsonProperty("@id")
+		private String id;
+		@JsonProperty("https://schema.org/termCode")
+		private String termCode;
+		@JsonProperty("https://schema.org/name")
+		private String name;
+
+		public String getId() {
+			return id;
+		}
+
+		public void setId(String id) {
+			this.id = id;
+		}
+
+		public String getTermCode() {
+			return termCode;
+		}
+
+		public void setTermCode(String termCode) {
+			this.termCode = termCode;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+	}
+
 	public String getId() {
 		return id;
 	}
diff --git a/dhp-workflows/dhp-rdfconverter/src/main/java/eu/dnetlib/dhp/rdfconverter/utils/RDFConverter.java b/dhp-workflows/dhp-rdfconverter/src/main/java/eu/dnetlib/dhp/rdfconverter/utils/RDFConverter.java
index c50e7adb9..bc67565e1 100644
--- a/dhp-workflows/dhp-rdfconverter/src/main/java/eu/dnetlib/dhp/rdfconverter/utils/RDFConverter.java
+++ b/dhp-workflows/dhp-rdfconverter/src/main/java/eu/dnetlib/dhp/rdfconverter/utils/RDFConverter.java
@@ -161,7 +161,7 @@ public class RDFConverter {
 
 				if (entry.getSameAs() != null) {
 					entry.getSameAs().stream().filter(Objects::nonNull).forEach(sameAs -> {
-						log.debug("sameAs: " + sameAs.getId());
+						log.debug("sameAs value: " + sameAs.getId());
 						addRelatedIdentifier(dataciteProtein, sameAs.getId(), "IsIdenticalTo");
 					});
 				}
@@ -173,6 +173,10 @@ public class RDFConverter {
 					});
 				}
 
+				if (entry.getSequenceAnnotation() !=null) {
+					log.debug("Sequence Annotation found " );
+				}
+
 				String proteinId = "";
 				try {
 					String[] identifierParts = dataciteProtein.getIdentifiers().get(0).getIdentifier().split("/");