Fig. 2
From: The mutational landscape of human olfactory G protein-coupled receptors
Wind rose plot representing the mutational landscape of human ORs. The plot shows the distribution of 119,069 nucleotide variants in 378 functional OR genes (color bars) clustered in 17 families (top right legend, ordered clockwise). Numbers in parenthesis correspond to the total number of receptors analyzed at each family. Gene names and family assignation correspond to the recommended terms by the HUGO Gene Nomenclature Committee (HGNC). Names of individual OR family members are in the format “ORnXm”: a root name “OR”, followed by family numeral (n), subfamily letter (X), and a numeral (m) representing the particular gene within the subfamily. For example, OR2A1 is the first OR gene in the family 2, subfamily A