Minor fix

josemduarte · josemduarte · commit 7cd71004e650 · 2015-07-31T11:33:12.000+02:00
diff --git a/biojava-structure/src/main/java/org/biojava/nbio/structure/ChainImpl.java b/biojava-structure/src/main/java/org/biojava/nbio/structure/ChainImpl.java
@@ -574,7 +574,7 @@ public String getSeqResSequence(){
 				ChemComp cc = g.getChemComp();
 				if ( cc == null) {
 					logger.warn("Could not load ChemComp for group: ", g);
-					str.append("X");
+					str.append(StructureTools.UNKNOWN_GROUP_LABEL);
 				} else if ( PolymerType.PROTEIN_ONLY.contains(cc.getPolymerType()) ||
 						PolymerType.POLYNUCLEOTIDE_ONLY.contains(cc.getPolymerType())){
 					// an amino acid residue.. use for alignment
