Abstract
The capacity of ileal mucosal cell membranes to effect phosphate release was examined. In the presence of optimal concentrations of adenosine triphosphate or guanosine triphosphate and magnesium, cholera toxin rapidly enhanced the release of phosphate; a lag or slow activation period was not observed. The enhancement of phosphate release by cholera toxin was dose-dependent, and did not appear to involve an increased utilization of adenosine triphosphate. The release of phosphate by cell membranes was stable for 4 weeks when stored at -80°C. The use of effectors to modify enzymatic activities in cell membrane preparations suggested that membrane bound adenylate cyclase and adenosine triphosphatase were not essential for phosphate release.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 29-36 |
| Number of pages | 8 |
| Journal | Toxicon |
| Volume | 17 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 1979 |
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All Science Journal Classification (ASJC) codes
- Toxicology
Cite this
The effect of cholera toxin on the release of phosphate by intestinal cell membranes. / Knoop, Floyd C.
In: Toxicon, Vol. 17, No. 1, 01.01.1979, p. 29-36.Research output: Contribution to journal › Article
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TY - JOUR
T1 - The effect of cholera toxin on the release of phosphate by intestinal cell membranes
AU - Knoop, Floyd C.
PY - 1979/1/1
Y1 - 1979/1/1
N2 - The capacity of ileal mucosal cell membranes to effect phosphate release was examined. In the presence of optimal concentrations of adenosine triphosphate or guanosine triphosphate and magnesium, cholera toxin rapidly enhanced the release of phosphate; a lag or slow activation period was not observed. The enhancement of phosphate release by cholera toxin was dose-dependent, and did not appear to involve an increased utilization of adenosine triphosphate. The release of phosphate by cell membranes was stable for 4 weeks when stored at -80°C. The use of effectors to modify enzymatic activities in cell membrane preparations suggested that membrane bound adenylate cyclase and adenosine triphosphatase were not essential for phosphate release.
AB - The capacity of ileal mucosal cell membranes to effect phosphate release was examined. In the presence of optimal concentrations of adenosine triphosphate or guanosine triphosphate and magnesium, cholera toxin rapidly enhanced the release of phosphate; a lag or slow activation period was not observed. The enhancement of phosphate release by cholera toxin was dose-dependent, and did not appear to involve an increased utilization of adenosine triphosphate. The release of phosphate by cell membranes was stable for 4 weeks when stored at -80°C. The use of effectors to modify enzymatic activities in cell membrane preparations suggested that membrane bound adenylate cyclase and adenosine triphosphatase were not essential for phosphate release.
UR - http://www.scopus.com/inward/record.url?scp=0018382574&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0018382574&partnerID=8YFLogxK
U2 - 10.1016/0041-0101(79)90252-6
DO - 10.1016/0041-0101(79)90252-6
M3 - Article
VL - 17
SP - 29
EP - 36
JO - Toxicon
JF - Toxicon
SN - 0041-0101
IS - 1
ER -