Table 4.

Tested compounds that do not elevate [Ca²⁺]_i in P2Y5- and Gα_Δ6qi5myr-cotransfected CHO cells

Name	Concentration
18:1-PC	NE ≤100 μM
Tetradecyl phosphonate*	NE ≤10 μM
Oleic acid	NE ≤20 μM
Platelet activating factor*	NE ≤80 μM
ATP	NE ≤100 μM
dATP	NE ≤100 μM
Protein hydrolysate	NE ≤50 mg/ml
Farnesyl diphosphates*	NE ≤10 μM
Geranylgeranyl diphosphates	NE ≤10 μM
Geranyl diphosphates	NE ≤10 μM
Farnesol	NE ≤10 μM

CHO cells were transfected with mtAEQ, P2Y5 cDNA (or the empty vector), and Gα_Δ6qi5myr. P2Y5-specific [Ca²⁺]_i induction was determined as described in Table 3. PC, phosphatidylcholine. NE, not effective.

^*Tested for antagonism against lysophosphatidic acid (LPA).