# ucsc	ensembl	genbank	refseq
chr1	1	CM000368.1	NC_008801.1
chr2	2	CM000369.1	NC_008802.1
chr3	3	CM000370.1	NC_008803.1
chr4	4	CM000371.1	NC_008804.1
chr5	5	CM000372.1	NC_008805.1
chr6	6	CM000373.1	NC_008806.1
chr7	7	CM000374.1	NC_008807.1
chr8	8	CM000375.1	NC_008808.1
chrM	MT		NC_006299.1
chrUn	Un		
chrX	X	CM000376.1	NC_008809.1