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

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

* Numbers and abbreviations are as described in [5, 8].

Kamesh et al. BMC Evolutionary Biology 2008 8:129   doi:10.1186/1471-2148-8-129