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Table 1 G protein-coupled receptors of Tetraodon nigroviridis (Tn). The numbers predicted in each family and sub-family are shown in comparison to humans (Hs)

From: Genome wide survey of G protein-coupled receptors in Tetraodon nigroviridis

Receptor Tn Hs*
Glutamate-like
CASR like 9 1
GABA-B 4 2
Metabotropic glutamate 12 8
Taste1 4 4
Orphan 7 0
Rhodopsin-like
Amine 71 40
Chemokine 42 42
Glycoprotein hormone/LGRs 5 8
MECA 24 22
Melatonin 3 3
Olfactory 22 460
Opsins 27 9
Peptide 88 60
Prostaglandin 12 15
Purine 48 42
Orphan 26 23
Adhesion-like
BAI 3 3
CD97 1 1
CELSR 3 3
EMR 1 3
ETL 1 1
HE6 2 1
LEC 6 3
Orphan 12 9
Frizzled-like
Frizzled 11 10
Smoothened 1 1
Taste2 0 13
Secretin-like
CALCRL/CRHR 1+3 = 4 2+2 = 4
GLPR/GCGR 1+2 = 3 1+2+1 = 4
PTHR 3 2
GHRHR/PACAP/SCTR/VIPR 1+4+1+4 = 10 1+2+1+1 = 5
Orphan 1 0
  1. * Numbers and abbreviations are as described in [23].