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Table 1 The number of G protein-coupled receptors predicted in the non-Rhodopsin GPCR families/subfamilies of Ciona in comparison with the human genome

From: The repertoire of G protein-coupled receptors in the sea squirt Ciona intestinalis

Receptor Human * Ciona
Adhesion   
CELSR 3 1
HE6/GPR126 1+1 1
GPR112/GPR128/GPR97/GPR56/GPR114 1+1+1+1+1 -
LEC/ETL 3+1 3
CD97/EMR/GPR127 1+3+1 -
BAI 3 -
GPR133/GPR144 1+1 -
VLGR1 1 -
GP123/124/125-like 1+1+1 1
GPR110/111/113/115/116 1+1+1+1+1 -
Unclassified Ciona ADH - 24
Frizzled   
Frizzled 10 3
Smoothened 1 1
TAS2 25 -
Glutamate   
CASR 1 1
GABAB 2 3
Metabotropic Glutamate 8 3
RAIG 4 1
Taste1 4 -
Secretin   
CALCRL/CRHR 2+2 1+2
GLPR/GCGR/GIPR 2+1+1 3+0+0
PTHR 2 2
GHRHR/PACAP/SCTR/VIPR 1+2+1+1 -
cAMP GPCR- like - 1
Methuselah-like - 1
GPR107 (LUTR)-like 1 1
  1. * Numbers and abbreviations are as described in [5, 8].