| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T1 |
0-118 |
Sentence |
denotes |
Tripolyphosphate is an alternative phosphodonor of the selective protein phosphorylation of liver microsomal membrane. |
| T2 |
119-365 |
Sentence |
denotes |
Two proteins (Mr = 145,000 and Mr = 130,000) of rat liver microsomal membrane are selectively phosphorylated in a characteristic biphasic time course by incubating the membrane with [gamma-32P]ATP in the absence of exogenously added Mg2+ (Lam, K. |
| T3 |
366-384 |
Sentence |
denotes |
S., and Kasper, C. |
| T4 |
385-397 |
Sentence |
denotes |
B. (1980) J. |
| T5 |
398-403 |
Sentence |
denotes |
Biol. |
| T6 |
404-409 |
Sentence |
denotes |
Chem. |
| T7 |
410-424 |
Sentence |
denotes |
255, 259-266). |
| T8 |
425-570 |
Sentence |
denotes |
This endogenous phosphorylation system was solubilized with Triton X-100 and fractionated by chromatography with DEAE-cellulose and Sepharose 4B. |
| T9 |
571-852 |
Sentence |
denotes |
The resulting preparation lacked both ATPase and inorganic pyrophosphatase activity, but retained its original character: the first phase occurred in the presence of ATP but the second phase was initiated after its depletion, implying the presence of a phosphodonor other than ATP. |
| T10 |
853-1047 |
Sentence |
denotes |
The putative phosphoryl donors were demonstrated to be ATP in the first phase and in the second phase tripolyphosphate, which is present in [gamma-32P]ATP preparations as a radioactive impurity. |
| T11 |
1048-1360 |
Sentence |
denotes |
The latter conclusion was corroborated by results showing that tripolyphosphate purified from a commercial [gamma-32P]ATP and chemically synthesized [32P] tripolyphosphate were both capable of phosphorylating the two proteins and that the unlabeled tripolyphosphate competed effectively against the phosphodonor. |
| T12 |
1361-1569 |
Sentence |
denotes |
A rapid dephosphorylation was observed in both phases upon removal of substrates during the reaction, indicating that there is a continuous turnover of the phosphoryl groups being transferred to the proteins. |
| T13 |
1570-1761 |
Sentence |
denotes |
The second phase of phosphorylation maintained by the tripolyphosphate was shown to be reversibly inhibited by micromolar levels of ATP, ADP, and nonhydrolyzable analogues of these compounds. |
| T14 |
1762-1831 |
Sentence |
denotes |
The implications of this unique phosphorylation system are discussed. |
| T1 |
0-118 |
Sentence |
denotes |
Tripolyphosphate is an alternative phosphodonor of the selective protein phosphorylation of liver microsomal membrane. |
| T2 |
119-365 |
Sentence |
denotes |
Two proteins (Mr = 145,000 and Mr = 130,000) of rat liver microsomal membrane are selectively phosphorylated in a characteristic biphasic time course by incubating the membrane with [gamma-32P]ATP in the absence of exogenously added Mg2+ (Lam, K. |
| T3 |
366-384 |
Sentence |
denotes |
S., and Kasper, C. |
| T4 |
385-397 |
Sentence |
denotes |
B. (1980) J. |
| T5 |
398-403 |
Sentence |
denotes |
Biol. |
| T6 |
404-409 |
Sentence |
denotes |
Chem. |
| T7 |
410-424 |
Sentence |
denotes |
255, 259-266). |
| T8 |
425-570 |
Sentence |
denotes |
This endogenous phosphorylation system was solubilized with Triton X-100 and fractionated by chromatography with DEAE-cellulose and Sepharose 4B. |
| T9 |
571-852 |
Sentence |
denotes |
The resulting preparation lacked both ATPase and inorganic pyrophosphatase activity, but retained its original character: the first phase occurred in the presence of ATP but the second phase was initiated after its depletion, implying the presence of a phosphodonor other than ATP. |
| T10 |
853-1047 |
Sentence |
denotes |
The putative phosphoryl donors were demonstrated to be ATP in the first phase and in the second phase tripolyphosphate, which is present in [gamma-32P]ATP preparations as a radioactive impurity. |
| T11 |
1048-1360 |
Sentence |
denotes |
The latter conclusion was corroborated by results showing that tripolyphosphate purified from a commercial [gamma-32P]ATP and chemically synthesized [32P] tripolyphosphate were both capable of phosphorylating the two proteins and that the unlabeled tripolyphosphate competed effectively against the phosphodonor. |
| T12 |
1361-1569 |
Sentence |
denotes |
A rapid dephosphorylation was observed in both phases upon removal of substrates during the reaction, indicating that there is a continuous turnover of the phosphoryl groups being transferred to the proteins. |
| T13 |
1570-1761 |
Sentence |
denotes |
The second phase of phosphorylation maintained by the tripolyphosphate was shown to be reversibly inhibited by micromolar levels of ATP, ADP, and nonhydrolyzable analogues of these compounds. |
| T14 |
1762-1831 |
Sentence |
denotes |
The implications of this unique phosphorylation system are discussed. |