+ /**
+ * Given a pdbId String, return the equivalent PDBEntry if available in the
+ * given sequence
+ *
+ * @param pdbId
+ * @return
+ */
+ public PDBEntry getPDBEntry(String pdbId);
+
+ /**
+ * Get all primary database/accessions for this sequence's data. These
+ * DBRefEntry are expected to resolve to a valid record in the associated
+ * external database, either directly or via a provided 1:1 Mapping.
+ *
+ * @return just the primary references (if any) for this sequence, or an empty
+ * list
+ */
+ public List<DBRefEntry> getPrimaryDBRefs();
+
+ /**
+ * Returns a (possibly empty) list of sequence features of the given type that
+ * overlap the range from-to (inclusive)
+ *
+ * @param type
+ * @param from
+ * @param to
+ * @return
+ */
+ List<SequenceFeature> findFeatures(String type, int from, int to);