Id |
Subject |
Object |
Predicate |
Lexical cue |
T1 |
0-118 |
Sentence |
denotes |
The cAMP Signaling Pathway and Direct Protein Kinase A Phosphorylation Regulate Polycystin-2 (TRPP2) Channel Function. |
T2 |
119-277 |
Sentence |
denotes |
Polycystin-2 (PC2) is a TRP-type, Ca(2+)-permeable non-selective cation channel that plays an important role in Ca(2+) signaling in renal and non-renal cells. |
T3 |
278-432 |
Sentence |
denotes |
The effect(s) of the cAMP pathway and kinase mediated phosphorylation of PC2 seem to be relevant to PC2 trafficking and its interaction with polycystin-1. |
T4 |
433-518 |
Sentence |
denotes |
However, the role of PC2 phosphorylation in channel function is still poorly defined. |
T5 |
519-683 |
Sentence |
denotes |
Here we reconstituted apical membranes of term human syncytiotrophoblast (hST), containing endogenous PC2 (PC2hst), and in vitro translated channel protein (PC2iv). |
T6 |
684-806 |
Sentence |
denotes |
Addition of the catalytic subunit of PKA increased by 566% the spontaneous PC2hst channel activity in the presence of ATP. |
T7 |
807-923 |
Sentence |
denotes |
Interestingly, 8-Br-cAMP also stimulated spontaneous PC2hst channel activity in the absence of the exogenous kinase. |
T8 |
924-1060 |
Sentence |
denotes |
Either stimulation was inhibited by addition of alkaline phosphatase, which in turn, was reversed by the phosphatase inhibitor vanadate. |
T9 |
1061-1163 |
Sentence |
denotes |
Neither maneuver modified the single channel conductance but instead increased channel mean open time. |
T10 |
1164-1286 |
Sentence |
denotes |
PKA directly phosphorylated PC2, which increased the mean open time but not the single channel conductance of the channel. |
T11 |
1287-1384 |
Sentence |
denotes |
PKA phosphorylation did not modify either R742X truncated or S829A-mutant PC2iv channel function. |
T12 |
1385-1476 |
Sentence |
denotes |
The data indicate that the cAMP pathway regulates PC2-mediated cation transport in the hST. |
T13 |
1477-1591 |
Sentence |
denotes |
The relevant PKA site for PC2 channel regulation centers on a single residue serine 829, in the carboxyl terminus. |