+ private static final int BUFFER_SIZE = 4096;
+
+ public static final int UNASSIGNED = Integer.MIN_VALUE;
+
+ private static final int PDB_RES_POS = 0;
+
+ private static final int PDB_ATOM_POS = 1;
+
+ private static final int PDBE_POS = 2;
+
+ private static final String NOT_OBSERVED = "Not_Observed";
+
+ protected static final String SIFTS_FTP_BASE_URL = "http://ftp.ebi.ac.uk/pub/databases/msd/sifts/xml/";
+
+ protected final static String NEWLINE = System.lineSeparator();
+