The human OR subgenome at a glance. ORs are depicted as squares, colored by family (see key). All Class I families are colored equally. Unclassified ORs are indicated in light gray. Framed squares denote intact genes. ORs to the left of each chromosome indicate singletons, and those to the right are in clusters of two or more. Gene order within each cluster is only approximate. The largest cluster on chromosome 11 is shown split for convenience. Small plus numbers under each chromosome name indicate the number of additional ORs for which a coordinate was not determined. Megabase coordinates (distance from the p telomere, excluding heterochromatic regions) were translated linearly into chromosomal localization. Therefore, the correspondence between cytogenetic bands and the indicated OR locations may be somewhat shifted.
