diff --git a/backend/src/main/kotlin/org/pathoplexus/backend/config/ReferenceGenome.kt b/backend/src/main/kotlin/org/pathoplexus/backend/config/ReferenceGenome.kt
index a71c4ed64..a1c47cb9e 100644
--- a/backend/src/main/kotlin/org/pathoplexus/backend/config/ReferenceGenome.kt
+++ b/backend/src/main/kotlin/org/pathoplexus/backend/config/ReferenceGenome.kt
@@ -1,5 +1,6 @@
 package org.pathoplexus.backend.config
 
+import org.pathoplexus.backend.api.AminoAcidSequence
 import org.pathoplexus.backend.api.NucleotideSequence
 
 data class ReferenceGenome(
@@ -15,9 +16,13 @@ data class ReferenceGenome(
     fun getNucleotideSegmentReference(segmentName: String): NucleotideSequence? = nucleotideSequences.find {
         it.name == segmentName
     }?.sequence
+
+    fun getAminoAcidGeneReference(gene: String): AminoAcidSequence? = genes.find {
+        it.name == gene
+    }?.sequence
 }
 
 data class ReferenceSequence(
     val name: String,
-    val sequence: NucleotideSequence,
+    val sequence: String,
 )
diff --git a/backend/src/main/kotlin/org/pathoplexus/backend/service/CompressionService.kt b/backend/src/main/kotlin/org/pathoplexus/backend/service/CompressionService.kt
index a448dc673..4e3c16c11 100644
--- a/backend/src/main/kotlin/org/pathoplexus/backend/service/CompressionService.kt
+++ b/backend/src/main/kotlin/org/pathoplexus/backend/service/CompressionService.kt
@@ -3,6 +3,7 @@ package org.pathoplexus.backend.service
 import com.github.luben.zstd.Zstd
 import org.pathoplexus.backend.api.Organism
 import org.pathoplexus.backend.api.OriginalData
+import org.pathoplexus.backend.api.ProcessedData
 import org.pathoplexus.backend.config.BackendConfig
 import org.springframework.stereotype.Service
 import java.nio.charset.StandardCharsets
@@ -21,29 +22,38 @@ enum class CompressionAlgorithm(val extension: String) {
 @Service
 class CompressionService(private val backendConfig: BackendConfig) {
 
-    fun compressUnalignedNucleotideSequence(
-        uncompressedSequence: String,
-        segmentName: String,
-        organism: Organism,
-    ): String = compress(
-        uncompressedSequence,
-        getDictionaryForNucleotideSequenceSegments(segmentName, organism),
-    )
+    fun compressNucleotideSequence(uncompressedSequence: String, segmentName: String, organism: Organism): String =
+        compress(
+            uncompressedSequence,
+            getDictionaryForNucleotideSequenceSegment(segmentName, organism),
+        )
 
-    private fun decompressUnalignedNucleotideSequence(
+    private fun decompressNucleotideSequence(
         compressedSequence: String,
         segmentName: String,
         organism: Organism,
     ): String = decompress(
         compressedSequence,
-        getDictionaryForNucleotideSequenceSegments(segmentName, organism),
+        getDictionaryForNucleotideSequenceSegment(segmentName, organism),
     )
 
+    private fun compressAminoAcidSequence(uncompressedSequence: String, gene: String, organism: Organism): String =
+        compress(
+            uncompressedSequence,
+            getDictionaryForAminoAcidSequence(gene, organism),
+        )
+
+    private fun decompressAminoAcidSequence(compressedSequence: String, gene: String, organism: Organism): String =
+        decompress(
+            compressedSequence,
+            getDictionaryForAminoAcidSequence(gene, organism),
+        )
+
     fun decompressSequencesInOriginalData(originalData: OriginalData, organism: Organism) = OriginalData(
         originalData.metadata,
         originalData
             .unalignedNucleotideSequences.mapValues {
-                decompressUnalignedNucleotideSequence(
+                decompressNucleotideSequence(
                     it.value,
                     it.key,
                     organism,
@@ -55,7 +65,7 @@ class CompressionService(private val backendConfig: BackendConfig) {
         originalData.metadata,
         originalData
             .unalignedNucleotideSequences.mapValues { (segmentName, sequenceData) ->
-                compressUnalignedNucleotideSequence(
+                compressNucleotideSequence(
                     sequenceData,
                     segmentName,
                     organism,
@@ -63,6 +73,63 @@ class CompressionService(private val backendConfig: BackendConfig) {
             },
     )
 
+    fun decompressSequencesInProcessedData(processedData: ProcessedData, organism: Organism) = ProcessedData(
+        processedData.metadata,
+        processedData
+            .unalignedNucleotideSequences.mapValues {
+                decompressNucleotideSequence(
+                    it.value,
+                    it.key,
+                    organism,
+                )
+            },
+        processedData.alignedNucleotideSequences.mapValues {
+            decompressNucleotideSequence(
+                it.value,
+                it.key,
+                organism,
+            )
+        },
+        processedData.nucleotideInsertions,
+        processedData.alignedAminoAcidSequences.mapValues {
+            decompressAminoAcidSequence(
+                it.value,
+                it.key,
+                organism,
+            )
+        },
+        processedData.aminoAcidInsertions,
+    )
+
+    fun compressSequencesInProcessedData(processedData: ProcessedData, organism: Organism) = ProcessedData(
+        processedData.metadata,
+        processedData
+            .unalignedNucleotideSequences.mapValues { (segmentName, sequenceData) ->
+                compressNucleotideSequence(
+                    sequenceData,
+                    segmentName,
+                    organism,
+                )
+            },
+        processedData.alignedNucleotideSequences.mapValues {
+            compressNucleotideSequence(
+                it.value,
+                it.key,
+                organism,
+            )
+        },
+        processedData.nucleotideInsertions,
+        processedData.alignedAminoAcidSequences.mapValues {
+            compressAminoAcidSequence(
+                it.value,
+                it.key,
+                organism,
+            )
+        },
+        processedData.aminoAcidInsertions,
+
+    )
+
     private fun compress(seq: String, dictionary: ByteArray?): String {
         val input = seq.toByteArray(StandardCharsets.UTF_8)
         val compressBound = Zstd.compressBound(input.size.toLong()).toInt()
@@ -96,11 +163,18 @@ class CompressionService(private val backendConfig: BackendConfig) {
         return String(decompressedBuffer, 0, decompressionReturnCode.toInt(), StandardCharsets.UTF_8)
     }
 
-    private fun getDictionaryForNucleotideSequenceSegments(segmentName: String, organism: Organism): ByteArray? =
+    private fun getDictionaryForNucleotideSequenceSegment(segmentName: String, organism: Organism): ByteArray? =
         backendConfig
             .getInstanceConfig(organism)
             .referenceGenomes
             .getNucleotideSegmentReference(
                 segmentName,
             )?.toByteArray()
+
+    private fun getDictionaryForAminoAcidSequence(geneName: String, organism: Organism): ByteArray? = backendConfig
+        .getInstanceConfig(organism)
+        .referenceGenomes
+        .getAminoAcidGeneReference(
+            geneName,
+        )?.toByteArray()
 }
diff --git a/backend/src/main/kotlin/org/pathoplexus/backend/service/SequenceEntriesTableProvider.kt b/backend/src/main/kotlin/org/pathoplexus/backend/service/SequenceEntriesTableProvider.kt
index c547f2b6d..7b532f76b 100644
--- a/backend/src/main/kotlin/org/pathoplexus/backend/service/SequenceEntriesTableProvider.kt
+++ b/backend/src/main/kotlin/org/pathoplexus/backend/service/SequenceEntriesTableProvider.kt
@@ -25,7 +25,7 @@ import org.springframework.stereotype.Service
 @Service
 class SequenceEntriesTableProvider(private val compressionService: CompressionService) {
 
-    private val cachedTables: MutableMap<Organism?, SequenceEntriesDataTable> = mutableMapOf()
+    private val cachedTables: MutableMap<Organism, SequenceEntriesDataTable> = mutableMapOf()
 
     fun get(organism: Organism): SequenceEntriesDataTable {
         return cachedTables.getOrPut(organism) {
@@ -43,6 +43,7 @@ class SequenceEntriesDataTable(
     SEQUENCE_ENTRIES_TABLE_NAME,
 ) {
     val originalDataColumn = serializeOriginalData(compressionService, organism).nullable()
+    val processedDataColumn = serializeProcessedData(compressionService, organism).nullable()
 
     val accessionColumn = varchar("accession", 255)
     val versionColumn = long("version")
@@ -54,7 +55,6 @@ class SequenceEntriesDataTable(
     val finishedProcessingAtColumn = datetime("finished_processing_at").nullable()
     val statusColumn = varchar("status", 255)
     val isRevocationColumn = bool("is_revocation").default(false)
-    val processedDataColumn = jacksonSerializableJsonb<ProcessedData>("processed_data").nullable()
     val errorsColumn = jacksonSerializableJsonb<List<PreprocessingAnnotation>>("errors").nullable()
     val warningsColumn = jacksonSerializableJsonb<List<PreprocessingAnnotation>>("warnings").nullable()
 
@@ -122,4 +122,25 @@ class SequenceEntriesDataTable(
             )
         },
     )
+
+    private fun serializeProcessedData(
+        compressionService: CompressionService,
+        organism: Organism,
+    ): Column<ProcessedData> = jsonb(
+        "processed_data",
+        { processedData ->
+            jacksonObjectMapper.writeValueAsString(
+                compressionService.compressSequencesInProcessedData(
+                    processedData,
+                    organism,
+                ),
+            )
+        },
+        { string ->
+            compressionService.decompressSequencesInProcessedData(
+                jacksonObjectMapper.readValue(string) as ProcessedData,
+                organism,
+            )
+        },
+    )
 }
diff --git a/backend/src/main/kotlin/org/pathoplexus/backend/service/UploadDatabaseService.kt b/backend/src/main/kotlin/org/pathoplexus/backend/service/UploadDatabaseService.kt
index 8df476ec0..e6fb13846 100644
--- a/backend/src/main/kotlin/org/pathoplexus/backend/service/UploadDatabaseService.kt
+++ b/backend/src/main/kotlin/org/pathoplexus/backend/service/UploadDatabaseService.kt
@@ -93,8 +93,7 @@ class UploadDatabaseService(
             this[sequenceSubmissionIdColumn] = submissionId
             this[segmentNameColumn] = segmentName
             this[sequenceUploadIdColumn] = uploadId
-            // this can be handled better; creating named sequences in the first place; it is possible to de-compress when serializing. Issue now, segment name is not known.
-            this[compressedSequenceDataColumn] = compressor.compressUnalignedNucleotideSequence(
+            this[compressedSequenceDataColumn] = compressor.compressNucleotideSequence(
                 it.sequence,
                 segmentName,
                 submittedOrganism,