+ // mites|ref_XP_002434188_1\r
+ // ref_XP_002434188_1_mites___ticks_\r
+ // ref_NP_001121530_1_frogs___toads_\r
+ //The format for GenBank Accession numbers are:\r
+ //Nucleotide: 1 letter + 5 numerals OR 2 letters + 6 numerals\r
+ //Protein: 3 letters + 5 numerals\r
+ //http://www.ncbi.nlm.nih.gov/Sequin/acc.html\r
+ private final static Pattern GENBANK_NUCLEOTIDE_AC_PATTERN_1 = Pattern\r
+ .compile( "(?:\\A|.*[^a-zA-Z0-9])([A-Z]\\d{5})(?:[^a-zA-Z0-9]|\\Z)" );\r
+ private final static Pattern GENBANK_NUCLEOTIDE_AC_PATTERN_2 = Pattern\r
+ .compile( "(?:\\A|.*[^a-zA-Z0-9])([A-Z]{2}\\d{6})(?:[^a-zA-Z0-9]|\\Z)" );\r
+ private final static Pattern GENBANK_PROTEIN_AC_PATTERN = Pattern\r
+ .compile( "(?:\\A|.*[^a-zA-Z0-9])([A-Z]{3}\\d{5})(?:[^a-zA-Z0-9]|\\Z)" );\r
+ // RefSeq accession numbers can be distinguished from GenBank accessions \r
+ // by their distinct prefix format of 2 characters followed by an\r
+ // underscore character ('_'). For example, a RefSeq protein accession is NP_015325. \r
+ private final static Pattern REFSEQ_PATTERN = Pattern\r
+ .compile( "(?:\\A|.*[^a-zA-Z0-9])([A-Z]{2}_\\d{6,})(?:[^a-zA-Z0-9]|\\Z)" );\r
+ // See: http://web.expasy.org/docs/userman.html#ID_line\r
+ private final static Pattern TREMBL_PATTERN = Pattern\r
+ .compile( "(?:\\A|.*[^a-zA-Z0-9])([A-Z][0-9][A-Z0-9]{3}[0-9])(?:[^a-zA-Z0-9]|\\Z)" );\r
+\r
+ /**\r
+ * Returns null if no match.\r
+ * \r
+ */\r