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Table 2 Analysis of the number of functional olfactory receptor genes and subfamily distribution per cluster

From: The complete swine olfactory subgenome: expansion of the olfactory gene repertoire in the pig genome

Functional OR genes per cluster1 Clusters per subfamily2 Subfamilies per cluster3
No. of OR genes No. of clusters No. of clusters No. of subfamilies No. of subfamilies No. of clusters
0 1 1 275 1 12
1 7 2 54 2 7
2 4 3 15 3 3
3 2 4 2 4 2
4 1 5 3 5 2
5 1    6 2
6 1    7 1
7 1    8 1
8 3    10 2
9 2    11 1
10 2    16 1
11 1    18 3
12 3    20 1
16 1    21 2
23 2    23 1
28 1    25 1
38 1    31 1
41 1    38 1
43 1    39 1
46 2    52 1
53 1     
56 1     
70 1     
72 1     
86 1     
89 1     
108 1     
123 1     
  1. 1Number of OR gene clusters with 0 to 123 functional OR genes.
  2. 2Number of subfamilies whose members are encoded at one to five clusters.
  3. 3Number of clusters that encode members of one to 52 subfamilies.