Id |
Subject |
Object |
Predicate |
Lexical cue |
T1 |
0-53 |
Sentence |
denotes |
Temperature dependence of cytochrome P-450 reduction. |
T2 |
54-128 |
Sentence |
denotes |
A model for NADPH-cytochrome P-450 reductase:cytochrome P-450 interaction. |
T3 |
129-248 |
Sentence |
denotes |
The NADPH-dependent reduction of rat hepatic microsomal cytochrome P-450 has been studied as a function of temperature. |
T4 |
249-388 |
Sentence |
denotes |
In the temperature range 4-37 degrees the reduction reaction was found to be biphasic and composed of two concurrent first order processes. |
T5 |
389-541 |
Sentence |
denotes |
This phenomenon was observed with microsomes from untreated and phenobarbital-induced animals in the presence or absence of exogenous Type I substrates. |
T6 |
542-690 |
Sentence |
denotes |
The amount of cytochrome P-450 reduced in the fast phase comprised approximately 70% of the total cytochrome P-450 at temperatures above 20 degrees. |
T7 |
691-910 |
Sentence |
denotes |
The temperature dependence of the fast phase was unusual for a membrane-bound enzyme system in that it lacked a discontinuity in the Arrhenius plot at a presumed phase transition temperature for the microsomal membrane. |
T8 |
911-1057 |
Sentence |
denotes |
The slow phase of reduction behaved in a normal fashion for a membrane-bound enzyme system with a break in the Arrhenius plot at about 20 degrees. |
T9 |
1058-1630 |
Sentence |
denotes |
The data presented here combined with previous observations which include (a) the ratio of cytochrome P-450 to NADPH cytochrome P-450 reductase (NADPH:ferricytochrome oxidoreductase, EC 1.6.2.4) is 20:1, (b) the catalytic portion of the reductase molecule probably protrudes above the surface of the membrane, and (c) the cytochrome P-450 molecules are presumably embedded in the membrane support the hypothesis that the hepatic microsomal drug-metabolizing system exists as clusters with most of the cytochrome P-450 molecules arranged about a central reductase molecule. |
T10 |
1631-1807 |
Sentence |
denotes |
This central flavoprotein reductase is able to randomly reduce those cytochrome P-450 molecules within the cluster without translational motion through the microsomal membrane. |
T11 |
1808-1922 |
Sentence |
denotes |
The slow phase of reduction represents the reduction of those molecules not directly associated with the clusters. |
T1 |
0-53 |
Sentence |
denotes |
Temperature dependence of cytochrome P-450 reduction. |
T2 |
54-128 |
Sentence |
denotes |
A model for NADPH-cytochrome P-450 reductase:cytochrome P-450 interaction. |
T3 |
129-248 |
Sentence |
denotes |
The NADPH-dependent reduction of rat hepatic microsomal cytochrome P-450 has been studied as a function of temperature. |
T4 |
249-388 |
Sentence |
denotes |
In the temperature range 4-37 degrees the reduction reaction was found to be biphasic and composed of two concurrent first order processes. |
T5 |
389-541 |
Sentence |
denotes |
This phenomenon was observed with microsomes from untreated and phenobarbital-induced animals in the presence or absence of exogenous Type I substrates. |
T6 |
542-690 |
Sentence |
denotes |
The amount of cytochrome P-450 reduced in the fast phase comprised approximately 70% of the total cytochrome P-450 at temperatures above 20 degrees. |
T7 |
691-910 |
Sentence |
denotes |
The temperature dependence of the fast phase was unusual for a membrane-bound enzyme system in that it lacked a discontinuity in the Arrhenius plot at a presumed phase transition temperature for the microsomal membrane. |
T8 |
911-1057 |
Sentence |
denotes |
The slow phase of reduction behaved in a normal fashion for a membrane-bound enzyme system with a break in the Arrhenius plot at about 20 degrees. |
T9 |
1058-1630 |
Sentence |
denotes |
The data presented here combined with previous observations which include (a) the ratio of cytochrome P-450 to NADPH cytochrome P-450 reductase (NADPH:ferricytochrome oxidoreductase, EC 1.6.2.4) is 20:1, (b) the catalytic portion of the reductase molecule probably protrudes above the surface of the membrane, and (c) the cytochrome P-450 molecules are presumably embedded in the membrane support the hypothesis that the hepatic microsomal drug-metabolizing system exists as clusters with most of the cytochrome P-450 molecules arranged about a central reductase molecule. |
T10 |
1631-1807 |
Sentence |
denotes |
This central flavoprotein reductase is able to randomly reduce those cytochrome P-450 molecules within the cluster without translational motion through the microsomal membrane. |
T11 |
1808-1922 |
Sentence |
denotes |
The slow phase of reduction represents the reduction of those molecules not directly associated with the clusters. |