diff --git a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/IdentifiedPeptide.java b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/IdentifiedPeptide.java
index be2a14b0527101d69552ed4510bcc0c9261c7bc3..fb71a2b6e9d79c9b4f67963e9ac159346bbef44e 100644
--- a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/IdentifiedPeptide.java
+++ b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/IdentifiedPeptide.java
@@ -26,6 +26,8 @@ import net.lemnik.eodsql.ResultColumn;
  */
 public class IdentifiedPeptide extends AbstractDTOWithID
 {
+    private static final long serialVersionUID = 1L;
+
     @ResultColumn("sequence")
     private String sequence;
     
diff --git a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/IdentifiedProtein.java b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/IdentifiedProtein.java
index 3384524e0217e8178e8bd7253c96a16e6e40b614..10ffe5044197ccf0ab58aa1f81fa9bad46449716 100644
--- a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/IdentifiedProtein.java
+++ b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/IdentifiedProtein.java
@@ -25,6 +25,8 @@ import net.lemnik.eodsql.ResultColumn;
  */
 public class IdentifiedProtein extends AbstractDTOWithID
 {
+    private static final long serialVersionUID = 1L;
+
     @ResultColumn("data_set_id")
     private long dataSetID;
     
diff --git a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/ProteinReferenceWithProbabilityAndPeptide.java b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/ProteinReferenceWithProbabilityAndPeptide.java
index b0ec609f8d7d911ec97d08d75bbcf70a2006e220..87dddbcf85c546e0a2a902b8d86123450050fde2 100644
--- a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/ProteinReferenceWithProbabilityAndPeptide.java
+++ b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/ProteinReferenceWithProbabilityAndPeptide.java
@@ -25,6 +25,7 @@ import net.lemnik.eodsql.ResultColumn;
  */
 public class ProteinReferenceWithProbabilityAndPeptide extends ProteinReferenceWithProbability
 {
+    private static final long serialVersionUID = 1L;
     @ResultColumn("sequence")
     private String peptideSequence;
 
diff --git a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/ProteinWithAbundances.java b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/ProteinWithAbundances.java
index b6701cddc760d2133b397c8469d5499673b089e5..147958110cc3c65a7075f10b0b2e076605a09f2f 100644
--- a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/ProteinWithAbundances.java
+++ b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/ProteinWithAbundances.java
@@ -27,6 +27,8 @@ import java.util.Set;
  */
 public class ProteinWithAbundances extends ProteinReference
 {
+    private static final long serialVersionUID = 1L;
+
     private static final double[] EMPTY_ARRAY = new double[0];
     
     private final Map<Long, double[]> abundances = new LinkedHashMap<Long, double[]>();
diff --git a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/SampleAbundance.java b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/SampleAbundance.java
index 6fd3bedfeee9641a4d209a86edf9ce54f09a0c74..b1d72f816cb3256f48ccd644ec608348d66f51e6 100644
--- a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/SampleAbundance.java
+++ b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/SampleAbundance.java
@@ -26,6 +26,8 @@ import net.lemnik.eodsql.ResultColumn;
  */
 public class SampleAbundance extends AbstractDTOWithID
 {
+    private static final long serialVersionUID = 1L;
+
     @ResultColumn("perm_id")
     private String samplePermID;
 
diff --git a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/Sequence.java b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/Sequence.java
index f05316ea8bd61a68551f7386552222b5cde3f1d4..99f35aca8f82b0d498345c10d337d8e26d5bd2b9 100644
--- a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/Sequence.java
+++ b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/shared/dto/Sequence.java
@@ -26,6 +26,8 @@ import net.lemnik.eodsql.ResultColumn;
  */
 public class Sequence extends AbstractDTOWithID
 {
+    private static final long serialVersionUID = 1L;
+
     @ResultColumn("amino_acid_sequence")
     private String sequence;